Question about 1991 Pontiac Grand Am

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Car is overheating, have put control module,coils. plug wires,crank sensor, sensor for fan,sensor for gauges,themostat

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Make sure the air is bled out of the cooling system,and replace the coolant sensor,not the sending unit,they are two different things.

Posted on May 26, 2010

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Posted on Jan 02, 2017

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Where is the crank position sensor and the ignition module ,coil pack at on a 1998 Pontiac Montana transport


Your spark plug wires go to coils, coils sit on top of ignition module.You have two crank sensors, if crank sensor issue, check the 7x crank sensor, on back side of engine block, down low, two wire connector, wire colors, yellow and purple.
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Apr 05, 2017 | Pontiac Montana Cars & Trucks

2 Answers

97 oldsmobile achieva wont fire changed coil pack spark plugs cam sensor still wont start


Make sure battery has a full charge and battery connections all good.
If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse.
If you having a problem with more than one system, I want to check for rpm signal, that usually comes from the crank sensor. Not sure why you replaced cam sensor? I always want to check sensor wiring circuits before replacing anything. Don't replace anything unless your testing points in that direction.

Nov 04, 2016 | Oldsmobile Cars & Trucks

1 Answer

My 1997 delta eighty eight will crank but will not start


run the fault codes ( if possible) or replace the ignition control module or coil as the fault mat be an overheating component that is shutting down

Apr 20, 2016 | Cars & Trucks

1 Answer

I HAVE OPEL VECTRA B(ENGINE X16XEL)MODEL 1999 THE ENGINE SHUTDOWN SUDDENLY DURING DRIVING AND NO FAULTS ARE RECORDED IN THE ECU


Check gas and spark. Check if fuel pump is still working. Do you have fuel pressure? Or can you check the fuel pressure? With key on, the pump should have put fuel under pressure in the lines and up to the injectors.
Check ignition system by checking for spark at one of the spark plug wires, with the engine cranking over. You need to see a blue, snapping spark to know the ignition system is good. If no spark on one wire, check another or all of them. If no spark, and no trouble codes-could be a bad crank position sensor. This sensor helps the computer calculate the timing of the spark, the main sensor the computer uses to signal for spark. It signals to the ignition control module (which controls the coils and the primary current to the coils ((the coils-where high voltage is created to cause spark at the plug)) ). So no spark? Could be a bad crank sensor...or a bad ignition control module...
If you have a single coil and not a coil pack, you might want to test that coil, but if shut down while driving, sounds like computer related, so check ignition controls: that would be crank sensor or ignition control module, or in worst case a bad PCM.

Jan 07, 2014 | Cars & Trucks

2 Answers

No spark ferom coil


Probable Causes: Fuel Pump (P0230 to P0233) PCM (P0600 to P0606) Crank Sensor (P0355 to P0399) Fuel Pressure (P0190 to P0194) Chances are the Check Engine Light is not on, but you may find any of the following codes: P0230 to P0233 Fuel Pump codes P0600 to P0606 PCM related codes P0335 to P0339 Crank Sensor codes P0190 to P0194 Fuel Pressure Sensor codes No spark due to a bad crank position sensor, a faulty ignition module or PCM, a problem in the ignition circuit (ignition switch, antitheft system, wiring, etc.), a faulty park/neutral safety switch, a bad ignition coil (only on engines with a single coil ignition), or wet plugs or plug wires (did it rain last night, did you just wash the engine?) A less common cause is a worn starter that draws so many amps while cranking the engine that there's not enough juice left to adequately power the ignition system and fuel injectors. Contributing factors might be a weak battery and/or loose or corroded battery cables. No fuel because of a dead fuel pump, bad fuel pump relay, blown fuel pump fuse, plugged fuel filter or line, or failed PCM injector driver circuit or injector power supply relay. Or, the fuel tank might be empty (don't believe what the gauge is telling you), or the fuel tank might contain contaminated fuel (water or too much alcohol) or the wrong type of fuel (whoops, somebody put in diesel instead of gasoline). No compression because the timing belt or chain is broken, the timing belt or chain is loose and jumped out of time, or the overhead camshaft has snapped.

Dec 20, 2013 | 2000 Hyundai Sonata

3 Answers

2005 Silverado 4.3 No Spark at coil, Where do I Start ?


Since you have replaced all of the parts, perhaps the problem is the wires. Check continuity of critical wires. Are you getting power to the computer, ignition module and coil? Check continuity of wires from computer to ignition module and crank sensor. Check for bent pins and pushed back female terminals in connectors.

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Jul 31, 2017 | Cars & Trucks

1 Answer

Rpm not working and run for a few seconds and cuts off


possible crank sensor problem. the 3800 engines were noted for this failure. although could be a bad module, cam sensor or associated wiring

Aug 31, 2012 | 1997 Buick Riviera

2 Answers

1996 Jeep Grand Cherokee No Start


I would be thinking that there is a good chance that you need to be checking out replacing the computer, if you aren't getting any communication with the proper scan tool then the computer isn't communicating with anything in the vehicle...... I would have guessed first off that the ignition control module might be bad but that is obviously part of the computer also, I would be looking in that direction.

Sep 19, 2009 | 1996 Jeep Grand Cherokee

2 Answers

My 1999 saturn sl2 will not start. It cranks, fuel pump is working but I no spark from the ignition coils or spark plugs. A few months ago the wipers started acting funny (going off when they wanted to)...


It could be, and almost definitely is very possible its the brain ( ECU or Electronic control module) Will all the things you said it is doing that is probably the problem. Caution : Computer problems are EXPENSIVE

Jun 21, 2009 | Saturn SL2 Cars & Trucks

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