Question about 2002 Chevrolet TrailBlazer

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2002 trailblazer exhaust manifold why did bolts come loose.

2002 trailblazer exhaust manifold bolts why are they loose.

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I have a 2002 Trailblazer to and i have had that happen to me 2 times

Posted on Jul 17, 2010

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  • Chevrolet Master
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Because the exhaust manifold is plastic, very common problem with TB's. Extreme heat and cooling will cause this then cause a vacume leak...Just re-tighten them.

Posted on Feb 11, 2012

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Posted on Jan 02, 2017

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1 Answer

Exhaust leak near manifold


Possible loose/broken manifold bolts....cracked manifold....front pipe gasket to manifold.... If you look closely sometimes the area of the leak will have a black color to it. May help you isolate the leak

Apr 06, 2015 | 2002 Ford Explorer

1 Answer

WHY DOES MY ENGINE OUT WHEN ITS COLD


What is the idle RPM at Park? If it is below 600, you may need to have the throttle body cleaned, and make sure they reset the PCM (computer) while this is done.
There may also be vacuum leaks around the intake manifold, bolts sometimes come loose.

Jul 27, 2014 | 2002 Chevrolet TrailBlazer

1 Answer

How to replace water pump on 1991 pontiac quad 4


2.3L Engine
  1. Disconnect the negative battery cable
  2. Detach the oxygen sensor connector.
  3. Properly drain the engine coolant into a suitable container. Remove the heater hose from the thermostat housing for more complete coolant drain.
  4. Remove upper and lower exhaust manifold heat shields.
  5. Remove the bolt that attaches the exhaust manifold brace to the manifold.
  6. Break loose the manifold to exhaust pipe spring loaded bolts using a 13mm box wrench.
  7. Raise and safely support the vehicle. NOTE: It is necessary to relieve the spring pressure from 1 bolt prior to removing the second bolt. If the spring pressure is not relieved, it will cause the exhaust pipe to twist and bind up the bolt as it is removed.
  8. Remove the manifold to exhaust pipe bolts from the exhaust pipe flange as follows:
    1. Unscrew either bolt clockwise 4 turns.
    2. Remove the other bolt.
    3. Remove the first bolt.
  9. Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
  10. Remove the radiator outlet pipe from the oil pan and transaxle. If equipped with a manual transaxle, remove the exhaust manifold brace. Leave the lower radiator hose attached and pull down on the outlet pipe to remove it from the water pump.
  11. Carefully lower the vehicle.
  12. Remove the exhaust manifold, seals and gaskets.
  13. Loosen and reposition the rear engine mount and bracket for clearance, as required.
  14. Remove the water pump mounting bolts and nuts. Remove the water pump and cover assembly, then separate the two pieces.

Feb 23, 2012 | 1991 Pontiac Grand Am

1 Answer

What is the torque setting for 1999 ford 182 exaust manifold


Check this for 1996-1999 FORD 3.0L (182) V6 DOHC...
- Install the exhaust manifold with a new exhaust manifold gasket.
- Install the exhaust manifold retaining studs and tighten to 13-16 ft. lbs. (18-22 Nm) in the sequence illustrated.
Raise and safely support the vehicle.
Position the Y-pipe assembly using a new flange gasket and install all the retaining nuts and bolts loosely.
Starting at the front of the system tighten the Y-pipe to exhaust manifold nuts to 26-34 ft. lbs. (34-46 Nm).

- Tighten the converter to transaxle nut and bolt to 30 ft. lbs. (40.3 Nm). Tighten the converter outlet bolts to 26-34 ft. lbs. (34-46 Nm).

zjlimited_1988.jpg

Fig. Right side exhaust manifold mounting bolt tightening sequence-3.0L DOHC engine (click image for zoom)


zjlimited_1989.jpg

Fig. Left side exhaust manifold mounting bolt tightening sequence-3.0L DOHC engine (click over image for zoom)

Hope this helps (remember to rating this answer).

Oct 06, 2011 | 1999 Ford Taurus

1 Answer

My 2002 trailblzer "low engine power" comes on


Temperature related problems like this is usually the plastic intake manifold bolts. Check for tightness, some may be really loose. #5 and #6 near the firewall are he easiest to check. When it warms up, the plastic intake expands and seals the leaks from the loose bolts. Snug those bolts back up and check back.

Feb 24, 2011 | 2002 Chevrolet TrailBlazer

2 Answers

Need the step by step instructions and pictures on how to replace an water pump on an 2002 Oldsmobile Alero 2.4L


Removal & Installation

2.2L Engine
  1. Before servicing the vehicle, refer to the precautions section.
  2. Disconnect the negative battery cable.
  3. Drain the engine coolant.
  4. Remove or disconnect the following:
    Exhaust manifold, if equipped with n automatic transaxle Right front wheel Splash shield Water pump sprocket access plate from the timing cover

    fcd00e0.jpg

    Fig. Remove the water pump sprocket access plate from the timing cover -2.2L engine
  5. Attach Water Pump Sprocket Holding Tool J 43651to the sprocket using the access plate bolts to secure the tool to the engine front cover.
    Sprocket to water pump bolts Engine block to water pump bolt Engine front cover to water pump bolt Thermostat housing to water pump feed pipe 2 water pump to engine block bolts Water pump

    30965cd.jpg

    Fig. Water pump mounting-2.2L engine
To install:
  1. Use a threaded stud in the water pump hub to align the hub to the water pump sprocket.
    Water pump and bolts Thermostat housing to water pump feed pipe Engine front cover bolt and engine block to water pump bolt. Tighten the bolts to 15 ft. lbs. (20 Nm) 2 of the water pump sprocket to water pump bolts
  2. Remove the threaded stud.
    Last water pump sprocket to water pump bolt and tighten the sprocket bolts to 89 inch lbs. (10 Nm).
  3. Remove the tool.
    Water pump sprocket access plate to the timing cover and tighten the bolts to 89 inch lbs. (10 Nm) Splash shield Right front wheel Exhaust manifold, if removed
  4. Fill the cooling system.
  5. Connect the negative battery cable.
2.4L Engine
  1. Before servicing the vehicle, refer to the precautions section.
  2. Disconnect the negative battery cable.
  3. Drain the cooling system.
  4. Remove or disconnect the following:
    WARNING Do not rotate the flex coupling more than 4 degrees or damage may occur. Oxygen Sensor (O 2 S) electrical connector Exhaust manifold heat shield Coolant inlet housing bolt through the exhaust manifold Exhaust manifold brace-to-manifold bolt Manifold-to-exhaust pipe studs Coolant inlet housing-to-water pump cover bolt Exhaust pipe from the exhaust manifold by pulling it downward Coolant inlet pipe from the oil pan Brake vacuum pipe from the camshaft housing Exhaust manifold from the cylinder head Heater hose from the heater outlet pipe Timing chain cover and tensioner Water pump cover-to-engine bolts 3 water pump-to-timing chain housing nuts Water pump and cover assembly Water pump cover from the pump

    f9cdfa8.jpg

    Fig. Exploded view of the water pump mounting-2.4L engine
continue...

Oct 22, 2009 | 2002 Oldsmobile Alero

1 Answer

Hexhaust manifold gasket


most replacements of exhaust manifold gasket are due to leaks. first you have to loosen the exhaust pipe close to the manifold to gain access to the manifold. loosen the manifold bolts and replace the gasket. unfortunately, most times you'll discover that the manifold bolts are rusted...that might make the job a bit more tedious and technical. in that case, the manifold will be accessed from up after bringing down the engine

Aug 16, 2009 | 2002 Mazda MPV

2 Answers

2002 KIA spectra exhaust manifold


The exhaust manifold is right there as soon as you open hood , first disconnect neg batt cab, then jack up car remove bolts that hold pipe to manifold together , unplug any o2 that is in the way and that could get damaged. now from the top take shield off then take manifold bolts out. you might want to spray them with pb blaster and let set a few hours sense exhaust bolts love to break. Remember to use new gaskets installing new one.

Jun 09, 2009 | 2002 Kia Spectra

1 Answer

Location of oxygen sensors


I think there is more than two. Either way, they are located in the exhaust system. The pre-cat sensors are in the head pipes, just below the exhaust manifold, and then there will be one right behind the catalytic converter. You will need a 7/8 inch wrench or possibly a special O2 socket.

Apr 05, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Where is the shut off valve for the secondary air


on the passanger side right above the exhaust manifold. bolted directly to the head with two 13mm bolts, the trans dipstick also bolts to the rear shutoff valve bolt.

Mar 21, 2009 | 2004 Chevrolet TrailBlazer

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