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What causes ignition modules to go bad in 1991 delta 88

I keep losing spark, replaced cam sensor, cam interuptor, timing chain, crank sensor, mass air flow sensor, tps sensor, coil pack, ignition module car ran abot 100 miles started shutting down again with no spark, starts again after sitting,

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  • Oldsmobile Master
  • 21,873 Answers

Generally the cause of an electrical component to fail is high heat or extreme voltage load.
Is the coil pack and module getting too hot from the heat of the engine ?
Is it shorting out because of oil or wet surfaces ?
Could you be loosing voltage to the module from the key switch ?
Are you loosing ground signals from the computer ?

Posted on Jan 22, 2013

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

honeymokey
  • 3113 Answers

SOURCE: car runs erratic, stahls intermittingly not always can,t isolate

If you have #1228253 ECM replace it. They will cause a lot of problems like this. Get a delco 16198264 ecm .

Posted on Jan 06, 2009

RJones1125
  • 373 Answers

SOURCE: 91 mazda 626dx 2.2liter shuts off while driving

sounds like the fuel pump relay

Posted on Feb 23, 2009

  • 1118 Answers

SOURCE: 1991 lesabre wont start after shutting down. If it

Best to do a fuel pressure test, pump might be weak and dosent show up until it gets gets warm. Best to do the test after it quits again when pump is at its hottest. If you havent done it yet chg. fuel filter too.

Posted on Mar 26, 2009

honeymokey
  • 3113 Answers

SOURCE: 94 buick lesabre 3800 engine, stalls after 10 mile

next time it won't run after it heats up, spray or pour water in crank sensor and see if it will start. I have seen new crank sensors go bad.

Posted on Jan 09, 2011

redds55
  • 2620 Answers

SOURCE: Have a oldmobile Delta 88

Sounds like you have a bad igniter or ignition control module both are the same.Its the part that the coils are mounted on.

Posted on Apr 26, 2011

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Check your mass air flow sensor and all vacuum hoses for leaks, your mass air flow sensor is located somewhere on the intake hose between the air filter box and manifold. Maybe loose wires maybe bad airflow sensor, could just be dirty, could even be timing advance or other sensors. Read codes from computer and go from there but likely something simple.

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If by your description I'm assuming you say "NO START" you mean it cranks but don't start..? Depending on the YR, make & model Poss. defective module? or switch itself, pickup (if app) Wrong plugs, mass air flow sensor (if app) Any C/E LTS? Scan PCM , also ck coolant system readings & ck emissions when running., crank & cam sensors are popular for that problem along with the module and pickup coil too. It's Long list but I would start with a scan of the PCM & check those crank & cam sensors 1st. Good Luck

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98 Pontiac GRAND am


The plugs and crank sensor could have done it, but the TPS and idle air control would have nothing to do with a random miss.
A more likely cause is the ignition module or a fuel problem. You may have to wait until the problem is bad enough to kill the engine or you have more codes to check out.

May 20, 2013 | Cars & Trucks

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No spark on 2002 sentra se-r replaced crankshaft sensor and camshaft sensor.


heres a list, ignition components damp or damaged, worn or faulty spark plugs, broken...loose....or disconnectedwiring in starting circuit, loose distributor changing ignition timing, ignition coil loose...faulty or disconnected wires. its good your cam & crank sensors were changed, but no spark indicates coil packs not able to get spark to plugs, but spark plugs may be fouled, replace them. replace distributor cap & rotor. check fuses, there's one for the ignition switch, check it. try all this see how it does,, also, if you haven't replaced both the AIR & FUEL FILTERS , DO SO !!!!!!!! just for thought, my daughter has a sentra gxe,2002, it started losing power on the highway, we had to have nissan replace it, $900 , you may have to deal with this, sell the car ! when you get it running, if you want. although , after we did repairs, tune-up, timing belt (not chain), etc., it runs like a top, she loves it ! good car if you ask me, just keep filters new, brakes good, it will go forever !

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My 1991 oldsmobile eighty eight royale keeps dying when i drive it, I have replaced ing control moduel, fuel pump, mass air flow , cam shaft sensor, timing chain, plugs wires ect. do i need to keep...


With that much already invested, why give up now? How about the crank position sensor-was that replaced as well? For spark control and spark timing, the computer needs inputs from both the cam position sensor and the crank position sensor before it can know when to cut power to the coils for spark to occur.
Before proceeding any further, you should check for diagnostic trouble codes. You would need an OBD 1 type code reader or scanner for your olds. Any stored codes may help you find the problem.
You can test the ignition system by checking for spark on a spark plug wire when the engine is cranking over. Pull the plug wire off a spark plug and put in a clean spark plug into the wire. Lay the plug so the threads are touching metal on the engine somewhere. Have someone crank the engine over and watch for a spark from the spark plug. If you have a blue, snapping spark when cranking, ignition is good.
One last note: since it dies when driving, there is a possibility that you have a malfunction in the pcm-the computer.

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Test the ignition system output, ignition systems can vary in configuration but operate on the same principal. Ignition systems can consist of a coil, pick up coil, crank angle sensor, cam angle sensor, spark plugs, spark plug wires, distributor cap, ignition rotor and a distributor and any variations of these components. An ignition coil is a voltage stepper coil that transforms a low voltage (12 volts) signal into tens of thousands of volts needed to jump the gap of the spark plug.

This coil is activated by an ignition module triggered by using the camshaft/crankshaft angle sensor; timing is adjusted by the PCM (computer).This primary electrical signal is generated by the PCM which calculates spark timing by using a variety of sensors including coolant temperature, mass air flow, and oxygen sensors. Go to 2carpros.com for a video on how to check this using a 12v light tool. On the engine repair section search, type, "engine cranks but will not start." If my answer helpe you, please leve good feedback. thanks

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If its not getting spark the choices are limited. You already replaced the coil pack so whats left is ignition module, crank sensor, knock sensor, cam sensor, or the timing was not was not set properly when putting it back together. Any one of those would create a no spark situation.

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