Question about 1993 Buick LeSabre

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After it runs for a while and gets hot the engine starts cutting up and then the car cuts off. the harmonic balancer, ignition module and spark plugs have been replaced

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Suggest that you have the idle cotrol sensor checked. when bad the car will not run at idle speed, sometimes even when car not even warm, will have to keep restarting it over @ over. hope this helps!!!

Posted on Aug 27, 2010


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1 Answer

Engine is running rough and now has cut out. How do I fix it

Do you know how to test the fuel pump electrical an ignition system for spark ? Videos on youtube on troubleshooting crank no start . . Fuel pump could have stopped , ignition module , crankshaft position sensor , It's a little more involved then how do I fix it . You need to test , see what's missing . Spark or fuel or an engine mechanical problem . Will the car start an run after it cuts out ? Fixing Car That Randomly Dies While Driving

Jun 28, 2016 | Cars & Trucks

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Engine starts but stops immediately, it's a 1975 chevy c10 350 2bbl, any suggestions?

Before replace the balancer and timing. Check it. Put #1 cylinder on top dead center of the compression stroke. Pull the cap and see where the rotor button is setting. It should point towards the #1 cylinder(drivers side front). If it does, then turn the truck on to the run position. Then check for voltage at the coil. No power, then look at the ignition switch or the wire from the switch to the fuse panel and coil. Could be the wire/s, most likely the ignition switch is old and tired.

Apr 01, 2015 | 1975 Chevrolet Camaro

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I have a 1985 fiero se v6 that was running fine but cutting off after warm up

Do you know what you are loosing when the engine stops running ?

Jan 16, 2014 | 1985 Pontiac Fiero

1 Answer

What does it mean the van cuts off and u have to wait an hour to start it back up

Possibly something in the ignition circuit or system fails when hot and has to cool off to work again. Check for spark after it cuts off. If you have no spark, it is a problem in the ignition system. But if you have a good, healthy blue spark, then ignition is probably good, so maybe the fuel pump gets hot and shuts off-then check your fuel pressure after it stalls. See if gas is still getting up to the engine. If pressure is too low, the injectors cannot do a good job of getting fuel into the cylinders.

If ignition is the problem, could be coils, ignition control module, crank position sensor...start with those.

Oct 31, 2013 | Cars & Trucks

1 Answer

I haved a 1989 Buick Park Avenue 3.8 engine...I have replaced the starter, coil pack, ignition module, crank sensor and cam sensor and still cannot get it to fire...I really NEED this car to run so PLEASE...

ok ! did you mean its got spark but does not start. if spark but does not start. check to see if its getting fuel to engine. remove air hose from throttle body and spray some starting fluid in throttle body, open throttle plate and spray some in. if car starts then stops, its a fuel problem. if no spark check the harmonic balancer on engine to see if its loose, the 3.8 engine have a crank position sensor that runs off the balancer. the rubber starts wearing out and the balancer start flopping around. and the timing gets massed up. good-day ! type in on pc browser ignition switch symtoms, and a list of things will come up. for a ignition switch controls over 50% of voltage for vehicle. good-day !

Oct 29, 2011 | 1989 Buick Park Avenue

1 Answer

My mother has a 1993 Oldsmoblile Cutlass Cierra. It's a 3.3. She had a new engine put in it last year. Now her car died yesterday. She had to have it towed home so my brother could look at it. He got...

Check for spark. My guess would be the ignition module going out, but could also be the crank sensor. The module sits under the coils. Check all coils for spark. If any coil doesn't spark, you can try replacing just that coil, but the problem may still be the module underneath. If you have a meter, run a resistance check on each coil from the terminals to ground. If the same coil that doesn't fire aslo has a different resistance, replace that coil.
If you have a meter, check the AC voltage on each of the crank sensor wires shown as compared to ground or battery positive. If the AC voltages are different on the three wires, suspect the sensor is bad, but also check the tone ring on the pulley (Fig 2 below) for any damage.
Please see my tip at for how to check for spark. These are genericinstructions.
The 3.3L engine is the only one with the C 3 I system. REMOVAL and INSTALLATION C3I Module See Figure 1
  1. Disconnect the negative battery cable.
  2. Unplug the 14-way connector at the ignition module.

Fig. Fig. 1: Distributorless C 3 I coils and module system - 3.3L engine
  1. Tag and disconnect the spark plug wires at the coil assembly.
  2. Remove the nuts and washers securing the C 3 I module assembly to the bracket.
  3. Remove the 6 bolts attaching the coil assemblies to the ignition module.

To install:
  1. Install the coil assemblies to the ignition module and install the 6 attaching bolts.
  2. Install the nuts and washers attaching the assembly to the bracket.
  3. Connect the spark plug wires.
  4. Engage the 14-way connector to the module.
  5. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Ignition Coil(s)
  1. Disconnect the negative battery cable.
  2. Tag and disconnect the spark plug wires.
  3. Remove ignition coil attaching bolts, then the ignition coil from the module.

To install:
  1. Install the coil(s) and attaching bolts.
  2. Connect the spark plug wires.
  3. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Dual Crankshaft Sensor
See Figures 2, 3 and 4
  1. Disconnect battery negative cable.
  2. Remove serpentine belt from crankshaft pulley.
  3. Raise and safely support the vehicle.
  4. Remove right front tire and wheel assembly, then the inner access cover.
  5. Remove crankshaft harmonic balancer retaining bolt and crankshaft harmonic balancer.

Fig. Fig. 2: Harmonic balancer with interrupter rings on C 3 I system
  1. Unplug the electrical connector from the sensor and remove the crankshaft sensor from the vehicle.

To install:
  1. Loosely install the crankshaft sensor on the pedestal.

Fig. Fig. 3: Dual crankshaft sensor - C 3 I system
  1. Position the sensor with the pedestal attached on special tool J-37089.
  2. Position the tool on the crankshaft.
  3. Install the bolts to hold the pedestal to the block face. Tighten to 14-28 ft. lbs. (20-40 Nm).
  4. Tighten the pedestal pinch bolt to 30-35 inch lbs. (3-4 Nm).
  5. Remove special tool J-37089.
  6. Place special tool J-37089 on the harmonic balancer and turn. If any vane of the harmonic balancer touches the tool, replace the balancer assembly.

A clearance of 0.025 inch is required on either side of the interrupter ring. Be certain to obtain the correct clearance. Failure to do so will damage the sensor. A misadjusted sensor of bent interrupter ring could cause rubbing of the sensor, resulting in potential driveability problems, such as rough idle, poor performance, or a no start condition.
  1. Install the balancer on the crankshaft and install the crankshaft balancer bolt. Tighten to 200-239 ft. lbs. (270-325 Nm).
  2. Install the inner fender shield.
  3. Install the tire and wheel assembly. Tighten to 100 ft. lbs. (140 Nm).
  4. Lower the vehicle.
  5. Install the serpentine belt.
  6. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Fig. Fig. 4: Distributorless C 3 I positioning tool J-37089 for installing dual crankshaft sensor.system - 3.3L engine

May 07, 2011 | 1990 Oldsmobile Cutlass Ciera

1 Answer

Ihave 1988 buick lasebra, and it keep cutting off, what you think the problem might be

If this occurs only when hot check for spark if there is no spark on all cylinders the problem may be the ignition module under the 3 ign coils. also check the crank position sensor for contact with the reluctor on the harmonic ballancer , this is on the lowest pulley for the serpentine belt near the bottom of the engine . DO NOT REMOVE the sensor for inspection , allignment is critical.. check fuel pressure, should be 30 to 35 psi. should stay between this pressure all the time while running.. if not fuel pump may be faulty...good luck

Nov 04, 2009 | 1997 Nissan Maxima

6 Answers

Why would a 1991 buick park avenue stop running while driving?

Got one in my shop doing the same thing you and a couple others describe here. I first thought it was the fuel pump, but that seems to not be the case. I am taking the ignition module off today and having it tested at NAPA. THey say they can put it through a couple of drive cycles and see if it cuts off. I'll let you know. THis car I have has already had a crank sensor replaced, but still dies and won't restart. When it dies, I noticed that spark has dropped out, but fuel pressure is still good. Let you know, later, but I think this ign. module is to blame.

Mar 17, 2009 | 1991 Buick Park Avenue

2 Answers

Car cuts off when it gets hot

I dont know what year and engine you have but sounds like a typical ford ignition module problem.When it will not start,check the spark at one of the plug wires.If there is spark when it is cold but none once warmed up.Replace the module.Your parts house (autozone or advance) can check it for you.But remember it is going to test good when it is cold.They have no way to check it while its hot.If your not sure,have it checked out by a profesional.Good Luck!!!

Aug 04, 2008 | 1997 Ford Mustang Cobra

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