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I have a 1996 buick lesabre 3800, just replaced fuel pressure regulator and upper intake plenum and gaskets b/c the EGR valve melted intake and coolant was leaking. I'm getting gas, spark, compression but still will not start. Any help?

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  • Cars & Trucks Master
  • 5,252 Answers

One thing that might cause that is too much back pressure in the exhaust, like a clogged catalytic converter. Try disconnecting the exhaust in front of the converter and see if it starts.

Posted on Oct 21, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 321 Answers

SOURCE: buick lesabre nightmare

Need to get a scan tool and look at the data stream while it is running for alot more info.Also any trouble codes.Sounds like initially,the engine isn't getting any fuel.I would have a pressure gauge connected to the fuel rail on the engine,so i could monitor the fuel pressure while all this is going on.Items to look at on the data stream would be timing,what timing is the PCM commanding for the engine.Also,have you checked for continuos power feed to the coils during this no start condition,and fire at the plugs while cranking.You could possibly still have spark,but maybe it is extremely weak?I have seen bad ignition switches cause weird problems before too.Many things power up through the ignition switch,just a thought.Have also seen bad PCM's cause strange problems..38 volts is a little on the low side for GM.Usually see those at,at least .50 and up,and rise steadily while pressing the throttle,up to just under 5.0 volts.Potentiometer with 5 volt supply.Vacuum leak can be checked with engine running at a steady idle speed,spray brake cleaner all around the intake manifold and listen for engine speed change.

Posted on Jul 31, 2008

  • 255 Answers

SOURCE: buick lesabre no start

Hi you have replaced allmost everything ,(try fuel pump relay)

Posted on Aug 18, 2008

  • 238 Answers

SOURCE: How serious is an upper plenum leak (found upper

The upper intake has a egr port right next to a coolant port, the egr is exhaust gas that is recyled into the intake for emission control. On a long trip the exhaust burns a hole between the two ports causing your problem. Pretty common on the 3.8. My suggestion is to stop driving it until you have it repaired, reason being is the coolant can travel down the intake and fill up the cylinders. If that happens, worst case you can damage a rod, but you will be stranded.

Posted on Apr 05, 2010

honeymokey
  • 3113 Answers

SOURCE: I have a 1990 Buick Regal that stalls...

You might try a crank sensor, most of the time if you pull it out you may see a crack in it. It's between the top of the oil pan an the transmission, good luck.

Posted on Jun 22, 2010

ZJLimited
  • 17970 Answers

SOURCE: po300 code possible fixes?

HI there:

Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.


A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.


Symptoms may include:

the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

A code P0300 may mean that one or more of the following has happened:
Faulty spark plugs or wires
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector(s)
Burned exhaust valve
Faulty catalytic converter(s)
Stuck/blocked EGR valve / passages
Faulty camshaft position sensor
Defective computer


Possible Solutions: If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.


If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.


Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Posted on Aug 03, 2012

Testimonial: "thank you for your suggestions.codes were cleared,so far po140 has not returned (bank one,sensor two).code po300 returned in less than five minutes.will check vacuum,hoses,and egr next."

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1 Answer

My 1994 buick lesabre misses out


Check the fuel pressure. It will tell you if the pump, fuel filter, and fuel pressure regulator are all good. Fuel pressure is critical on fuel injected engines.

Check your spark plugs for wear or the wrong gap.

Another possibility is a vacuum or air leak. Check all vacuum hoses and the intake manifold gasket. The GM 3.8L engine is prone to lower intake manifold gasket failures. Sometimes the upper intake gasket, too.

Sep 09, 2014 | 1994 Buick LeSabre

1 Answer

Intakegasket for grandam gt


Exactly what is the wrong? Need the part? Need to know torque adjust or porcedure to take off?

For
1994 Pontiac Grand Am 3.1L SFI OHV 6cyl check this procedure for Intake Manifold...
(see Figure 14)
The 3.1L engine is equipped with upper and lower intake manifolds. The upper intake manifold is also known as the intake manifold plenum.

CAUTION The fuel system is under pressure and must be properly relieved before disconnecting the fuel lines. Failure to properly relieve the fuel system pressure can lead to personal injury and component damage.
  1. Relieve the fuel system pressure.
  2. Disconnect the negative battery cable.
  3. Remove top half of the air cleaner assembly and throttle body duct.
  4. Drain and recycle the engine coolant.
  5. Disconnect the EGR pipe from exhaust manifold.
  6. Remove the serpentine belt.
  7. Remove the brake vacuum pipe at the intake plenum.
  8. Disconnect the control cables from the throttle body and intake plenum mounting bracket.
  9. Remove the power steering lines at the alternator bracket.
  10. Remove the alternator.
  11. Label and disconnect the ignition wires from the spark plugs and wire retainers on the intake plenum.
  12. Remove the ignition assembly and the EVAP canister purge solenoid together.
zjlimited_601.jpg

Fig. 14: View of the intake manifold and related components

  1. Disconnect the upper engine wiring harness connectors at the following components:
    Throttle Position Sensor (TPS) Idle Air Control (IAC) Fuel Injectors Coolant temperature sensor Manifold Absolute Pressure (MAP) sensor Camshaft Position (CMP) sensor
  2. Tag and disconnect the vacuum lines from the following components:
    Vacuum modulator Fuel pressure regulator PCV valve
  3. Disconnect the MAP sensor from upper intake manifold.
  4. Remove the upper intake plenum mounting bolts and lift off the plenum.
  5. Disconnect the fuel lines from the fuel rail and bracket.
  6. Install engine support fixture special tool J 28467-A or an equivalent.
  7. Remove the right side engine mount.
  8. Remove the power steering mounting bolts and support the pump out of the way without disconnecting the power steering lines.
  9. Disconnect the coolant inlet pipe from the outlet housing.
  10. Remove the coolant bypass hose from the water pump and the cylinder head.
  11. Disconnect the upper radiator hose at thermostat housing.
  12. Remove the thermostat housing.
  13. Remove both rocker arm covers.
  14. Remove the lower intake manifold bolts. Make sure the washers on the four center bolts are installed in their original locations.
When removing the valve train components they should be kept in order for installation the original locations.
  1. Remove the rocker arm retaining nuts or bolts and extract the rocker arms and pushrods.
  2. Remove the intake manifold from the engine. Remove and discard the gasket.
  3. Using a suitable scraper, clean gasket material from all mating surfaces. Remove all excess RTV sealant from front and rear ridges of cylinder block
To install:
  1. Place a 0.12 inch (3mm) bead of RTV, on each ridge, where the front and rear of the intake manifold contact the block.
  2. Using a new gasket, place the intake manifold on the engine.
  3. Install the pushrods in their original locations. Coat the pushrods with prelube.
The intake pushrods are marked yellow (5 3 /4 inch long) and the exhaust are green (6 inches long). Make sure the pushrods are properly seated in the valve lifters and rocker arms.
  1. Position the rocker arms in there original locations and tighten to specifications. Refer to the procedure earlier in this section.
  2. Install lower the intake manifold attaching bolts. Apply sealant 12345739 (or equivalent thread locking compound) to the threads of bolts. Tighten the vertical bolts first then the diagonal bolts to 115 inch lbs. (13 Nm).
  3. Install the front rocker arm cover.
  4. Install the thermostat housing.
  5. Connect the upper radiator hose to the thermostat housing.
  6. Fasten the coolant inlet pipe to thermostat housing.
  7. Connect coolant bypass pipe at the water pump and cylinder head.
  8. Install the power steering pump in the mounting bracket.
  9. Loosely install the serpentine belt.
  10. Connect the right side engine mount.
  11. Remove the special engine support tool.
  12. Fasten the fuel lines to fuel rail and bracket.
  13. Install the upper intake manifold and tighten the mounting bolts to 18 ft. lbs. (25 Nm).
  14. Install the MAP sensor.
  15. Connect the upper engine wiring harness connectors to the related components removed earlier.
  16. Connect the vacuum lines to the PCV, vacuum modulator and fuel pressure regulator.
  17. Install the EVAP canister purge solenoid and ignition assembly.
  18. Install the alternator assembly.
  19. Connect the power steering line to the alternator bracket.
  20. Install the serpentine belt.
  21. Connect the spark plug wires to the spark plugs and intake plenum wire retainer.
  22. Install the EGR pipe to the exhaust manifold.
  23. Attach the control cables to the throttle body lever and upper intake plenum mounting bracket.
  24. Install air intake assembly and top half of the air cleaner assembly.
  25. Install the brake vacuum pipe.
  26. Fill the cooling system.
  27. Connect the negative battery cable, then start the vehicle and verify that there are no leaks.

For PARTS REPLACEMENT check in THIS LINK: carpartswholesale.com

Hope helps.

Feb 01, 2011 | 1994 Pontiac Grand Am

2 Answers

95 check s-10 blazer idle is not consistent: almost stalls then idle surges. When gas is applied the engine bucks & misses severely. A friend has suggested it may be the egr valve. What are the...


An EGR that is stuck opencan very well cause the symptom you are decribing, including surging at idle and poor acceleration.

Failure of GM EGR Valves is quite rare.
A common problem on the 4.3L Vortec engines is failure of the Central Multiport Injection Assembly located between the plastic upper intake plenum and the lower intake manifold.

Sometimes failure of injector lines and/or the fuel pressure regulator (Part of the MFI Assembly) will cause fuel to spill into the upper plenum area. This can dislodge carbon deposits in the upper plenum which then get stuck in the EGR Valve and cause the symptoms that you are describing. The EGR Valve can be removed and cleaned. Replacement is not usually necessary.
Ido recommend replacement of the injector assembly however.

check out this solution page for more info regarding this.

http://www.fixya.com/cars/t3218505-misfire_code_rough_idle_full_tune_up

Dec 04, 2010 | 1995 Chevrolet Blazer

1 Answer

How to remove intake manifold on 2005 Buick Lesabre


You didn't post the size of your engine so please pick the appropriate one:

3.8L
  1. Relieve the fuel system pressure.
  2. Drain the cooling system.
    1. Remove or disconnect the following:
    2. Negative battery cable
    • Supercharger
    • Thermostat housing
    • Exhaust Gas Recirculation (EGR) tube at the intake manifold
    • Engine Control Temperature (ECT) sensor
    • Intake manifold
  • To install:

    1. Install or connect the following:
      • Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm).
      • ECT sensor connector
      • EGR tube to the intake manifold
      • Thermostat housing
      • Supercharger
      • Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.
    4.6L
    4.6L Engine
    1. Remove the brake booster hose from the throttle body.
    2. Remove the fuel pressure regulator vacuum tube from the fuel pressure regulator and the water crossover.
    3. Remove the PCV fresh air feed tube from the camshaft cover and the throttle body.
    4. Remove the PCV dirty air tube from the PCV orifice in the right camshaft cover and from the intake manifold.
    5. Disconnect the fuel injector electrical connectors from the fuel injectors.
    6. Remove the fuel injector wiring harness.
    7. Remove the fuel rail bracket nut from the engine lift bracket.
    8. Remove the fuel rail studs.
    9. Lift and remove the fuel rail with injectors.
    10. Loosen the plenum duct clamp in order to remove the intake manifold.
    11. Remove the intake manifold bolts.
    12. Remove the intake manifold.

    To install:

    1. Install the intake manifold, fitting the plenum duct over the intake manifold duct.
    2. Loosely install the intake manifold bolts.

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    Intake manifold torque sequence-4.6L engine


    1. Tighten the intake manifold bolts in sequence. Tighten the intake manifold bolts to 89 inch lbs. (10 Nm).
    2. Tighten the plenum duct clamp to the intake manifold. Tighten the plenum duct clamp to 24 inch lbs. (2.75 Nm).
    3. Inspect the fuel injector O-rings. Ensure the fuel injector O-rings are not missing, misaligned or damaged. Replace the O-rings if necessary.
    4. Lubricate the intake manifold fuel injector bores with light mineral oil (GM P/N 9981704), clean engine oil, or equivalent.
    5. Install the fuel rail with fuel injectors as an assembly.
    6. Install the fuel rail studs. Tighten the fuel rail studs to 80 inch lbs. (9 Nm).
    7. Install the fuel rail bracket nut to the engine lift bracket. Tighten the fuel rail bracket nut to 89 inch lbs. (10 Nm).
    8. Install the fuel injector wiring harness.
    9. Connect the fuel injector electrical connectors to the fuel injectors.
    10. Install the PCV dirty air tube to the PCV orifice in the right camshaft cover and to the intake manifold.
    11. Install the PCV fresh air feed tube to the camshaft cover and the water crossover.
    12. Install the fuel pressure regulator vacuum tube to the fuel pressure regulator and the throttle body.
    13. Install the brake booster hose to the throttle body.

    Nov 13, 2010 | Buick LeSabre Cars & Trucks

    2 Answers

    Need to replace the intake manifold


    3.8L Engine (most common) Upper Intake Manifold To Remove:
    1. Drain the cooling system.
    2. Remove or disconnect the following:
      • Negative battery cable.
      • Fuel injector sight shield.
      • Air cleaner intake duct.
      • Right spark plug wires from the ignition control module and reposition.
    3. Relieve the fuel pressure.
    4. Remove or disconnect the following:
      • Fuel rail assembly.
      • Brake booster hose from the vacuum source manifold in the upper intake manifold.
      • Exhaust Gas Recirculation Valve (EGR) wiring harness heat shield nut, bolt and the EGR heat shield.
      • Throttle body support bracket upper bolt.
    5. Disconnect the electrical connectors from the following:
      • EVAP purge solenoid
      • Throttle Position (T/P) sensor
      • Idle Air Control (IAC) valve
      • Manifold Absolute Pressure (MAP) sensor
      • Mass Air Flow (MAF) sensor
      • EVAP purge solenoid vacuum line from the throttle body.
      • Accelerator and the cruise control cables with the bracket from the throttle body.
    6. Remove or disconnect the following:
      • Upper intake manifold bolts and stud.
      • Clean the upper intake manifold bolt threads.
    7. Remove or disconnect the following:
      • Upper intake manifold by lifting the back of the intake and sliding the manifold forward from the throttle body support bracket.
      • Upper-to-lower intake manifold carrier gasket from the upper intake manifold.
    8. If the upper intake manifold is being replaced, remove the following:
      • Throttle body assembly.
      • Manifold Absolute Pressure (MAP) sensor.
      • Positive Crankcase Ventilation (PCV) valve.
      • Vacuum source manifold.
    Upper intake manifold bolt torque sequence (3.8L engine) gm-03-38-530.gif

    To Install:
    1. If the manifold was replaced, install or connect the following:
      • Vacuum source manifold.
      • Positive Crankcase Ventilation (PCV) valve.
      • Manifold Absolute Pressure (MAP) sensor.
      • Throttle body assembly.
      • Upper-to-lower intake manifold carrier gasket to the upper intake manifold.
    2. Carefully place the upper intake manifold onto the lower intake manifold. Ensure that the alignment pins in the upper intake manifold align with the holes in the lower intake manifold. NOTE: Apply thread lock compound, to the bolt threads before assembly.
    3. Install or connect the following:
      • Upper intake manifold. Tighten the upper intake manifold bolts in sequence to 89 in lbs (10 Nm)
      • Accelerator and the cruise control cables with the bracket to the throttle body.
      • EVAP purge solenoid vacuum line to the throttle body.
    4. Connect the electrical connectors to the following:
      • Mass Air Flow (MAF) sensor
      • Manifold Absolute Pressure (MAP) sensor
      • Idle Air Control (IAC) valve
      • Throttle Position (T/P) sensor
      • EVAP purge solenoid
    5. Install or connect the following:
      • Throttle body upper support bracket bolt. Tighten the bolt to 89 in lbs (10 Nm)
      • EGR valve wiring harness heat shield, nut and the bolt. Tighten the nut and the bolt to 89 in lbs (10 Nm)
      • Brake booster hose to the vacuum source manifold.
      • Fuel rail assembly.
      • Right spark plug wires.
      • Air cleaner intake duct.
      • Fuel injector sight shield.
    6. Connect the negative battery cable.
    7. Fill the cooling system.
    8. Inspect for fluid or vacuum leaks.
    Lower Intake Manifold (W/O Supercharger) To Remove:
    1. Remove or disconnect the following:
      • Upper intake manifold.
      • Generator brace.
      • Drive belt tensioner with the mounting bracket and the heater water bypass inlet pipe.
      • Exhaust gas recirculation EGR outlet pipe bolt from the lower intake manifold.
      • Radiator inlet hose from the water outlet housing.
      • ECT sensor electrical connector.
      • Right upper engine mount strut bracket.
      • Generator brace bracket bolts.
      • Generator brace bracket.
      • Lower intake manifold bolts.
      • Lower intake manifold.
      • Lower intake manifold seals.
      • Lower intake manifold gaskets.
    2. If replacing the lower intake manifold, Remove or disconnect:
      • Water outlet housing bolt and stud
      • Water outlet housing
      • Gasket and the thermostat.
      • ECT sensor.
    3. Inspect the flatness of inlet flanges.
    4. Clean the intake manifold mating surfaces.
    5. Clean the intake manifold bolts and bolt holes of adhesive compound.
    To Install:
    1. If removed, install the ECT sensor.
      • Tighten the ECT sensor to 18 ft. lbs. (25 Nm)
    2. If removed, install the thermostat, the gasket, and the water outlet housing.
    3. If removed, install the water outlet housing bolt and the stud.
      • Tighten the bolt and stud to 20 ft. lbs. (27 Nm)
    4. Install or connect the following:
      • Lower intake manifold gaskets. NOTE: Apply sealer GM P/N 12346286 (Canadian P/N 10953472) or equivalent to the ends of the intake manifold seals.
      • Lower intake manifold seals.
      • Lower intake manifold.
      • Lower intake manifold bolts.
      NOTE: Apply thread lock compound GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the two hidden bolts and ensure they are installed.
    5. Tighten the lower intake manifold bolts in sequence to 11 ft. lbs. (15 Nm) gmpc_v6_5.gif

    6. Install or connect the following:
      • Generator brace bracket.
      • Generator brace bracket bolts. Tighten the bolts to 37 ft. lbs. (50 Nm)
      • Right upper engine mount strut bracket.
      • ECT sensor electrical connector.
      • Radiator inlet hose to the water outlet housing.
      • EGR outlet pipe to the lower intake manifold.
      • EGR outlet pipe bolt to the lower intake manifold. Tighten the bolt to 21 ft. lbs. (29 Nm)
      • Drive belt tensioner.
      • Generator brace.
      • Upper intake manifold.
    7. Inspect for leaks.
    Lower Intake Manifold (W/ Supercharger) To Remove:
    1. Disconnect the negative battery cable.
    2. Drain the cooling system.
    3. Remove the supercharger.
    4. Remove the thermostat housing.
    5. Remove the EGR pipe at the intake manifold.
    6. Disconnect the electrical connection at the temperature sensor.
    7. Remove the intake manifold and gaskets.
    NOTE: The coolant bypass tube will release from the intake manifold when the manifold is removed.
    To Install:
    1. Clean the gasket sealing surfaces.
    2. Install the intake manifold gaskets.
    3. Align the coolant bypass tube with the opening in the intake manifold and install the manifold. Tighten the bolts to 11 lb ft (15 Nm).
    4. Install the electrical connector to the temperature sensor.
    5. Install the EGR pipe to the intake manifold.
    6. Install the thermostat housing.
    7. Install the supercharger.
    8. Fill the cooling system.
    9. Connect the negative battery cable.

    Aug 05, 2010 | 1997 Pontiac Grand Prix

    1 Answer

    Need to replace intake manifold how do you do this


    Bonneville, LeSabre, Park Avenue 2000-2005 Intake Manifold - Removal & Installation

    3.8L Engine
    VIN 1 Engine
    1. Before servicing the vehicle, refer to the Precautions section.
    2. Relieve the fuel system pressure.
    3. Drain the cooling system.
    4. Remove or disconnect the following:
      Negative battery cable Supercharger Thermostat housing Exhaust Gas Recirculation (EGR) tube at the intake manifold Engine Control Temperature (ECT) sensor Intake manifold
    To install:
    1. Install or connect the following:
      Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm). ECT sensor connector EGR tube to the intake manifold Thermostat housing Supercharger Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.

    VIN K Engine
    1. Before servicing the vehicle, refer to the Precautions section.
    2. Disconnect the negative battery cable.
    3. Drain the cooling system.
    4. Relieve the fuel system pressure.
    5. Remove or disconnect the following:
      Fuel injector sight shield Air inlet duct Spark plug wires from the right side Manifold Absolute Pressure (MAP) sensor Vacuum lines from the intake manifold Fuel lines Fuel injector electrical connectors Fuel regulator vacuum line Fuel rail from the intake manifold Exhaust Gas Recirculation (EGR) heat shield Throttle cable bracket from the cylinder head mounting bracket and the throttle body cables Throttle body support bracket Upper intake plenum and gasket Thermostat housing Electrical connector from the Engine Coolant Temperature (ECT) sensor Drive belt tensioner assembly EGR valve outlet pipe Lower intake manifold

      a5adffa.jpg
      Fig. Exploded view of the intake manifold and related components-3.8L (VIN K) engine
    To install:


    140d431.jpg
    Fig. Upper intake manifold torque sequence-3.8L (VIN K) engine


    4950e4f.jpg
    Fig. Lower intake manifold torque sequence-3.8L (VIN K) engine
    1. Install or connect the following:
      Intake manifold using new manifold gaskets. Torque the bolts in sequence to 11 ft. lbs. (15 Nm); then, re-torque to 11 ft. lbs. (15 Nm). EGR valve outlet pipe Drive belt tensioner assembly. Torque the tensioner bolts to 37 ft. lbs. (50 Nm). Electrical connector to the ECT sensor Thermostat housing Upper intake plenum. Torque the intake plenum bolts to 88 inch. lbs. (10 Nm). Throttle body support bracket Throttle cable bracket to the cylinder head mounting bracket and the cables to the throttle body lever EGR heat shield Fuel rail. Torque the fuel rail bolts to 88 inch. lbs. (10 Nm). Fuel lines Fuel regulator vacuum line Fuel injector electrical connectors Vacuum lines to the intake manifold MAP sensor Spark plug wires Fuel injector sight shield and air inlet duct Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.

    Hope this help (remember rated this).

    May 17, 2010 | 2001 Pontiac Bonneville

    1 Answer

    How serious is an upper plenum leak (found upper


    The upper intake has a egr port right next to a coolant port, the egr is exhaust gas that is recyled into the intake for emission control. On a long trip the exhaust burns a hole between the two ports causing your problem. Pretty common on the 3.8. My suggestion is to stop driving it until you have it repaired, reason being is the coolant can travel down the intake and fill up the cylinders. If that happens, worst case you can damage a rod, but you will be stranded.

    Apr 05, 2010 | 2001 Buick LeSabre

    1 Answer

    What causes antifreeze to get under the plenum on a 98 buick 3800 eng ? thank's Luther


    the EGR transfer tube melts the upper intake(plenum) it will need to be replaced

    Oct 27, 2009 | 1998 Buick Park Avenue

    1 Answer

    My 1995 Buick Lesabre is misfiring


    If it only happens at a certain point in the throttle travel, it may be a bad TPS. You would need a computer to confirm loss of signal, but that is what it sounds like.

    Jun 08, 2009 | 1995 Buick LeSabre

    3 Answers

    Buick lesabre no start


    Hi you have replaced allmost everything ,(try fuel pump relay)

    Jul 31, 2008 | 1992 Buick LeSabre

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