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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

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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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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2 Answers

00 Explorer 4.0 ohv v6. If cam position sensor fails will it cause, #1 engine to die at hwy speed 60mph? Also upon trying to restart, it cranks very fast, is that poss. cam sensor failure too? Thanks


No, to the second question- sensor won't make it crank any different. Faster than normal cranking often means a broken timing belt -less friction with the valve train not moving, so engine spins faster. But you have a timing chain, right? Any engine noise when it quit at 60mph? You could watch some valve action through the oil filler cap while the engine is being cranked, to make sure the timing chain is still intact.
If all is good, check for spark and gas to the engine. If stopped while running, it could be a failed fuel pump or a problem in the ignition system- cam or crank sensor, ignition coil, ignition control module, some of the things to check if no spark.

Nov 18, 2015 | Cars & Trucks

1 Answer

Getting p0016 code


Crankshaft Position - Camshaft Position Correlation
What does this mean? OBD Code P0016refers to
The crankshaft position sensor (CKP) and Camshaft position sensor (CMP) work in harmony to control the spark/fuel delivery and timing. They both consist of a reluctor, or tone, ring which passes over a magnetic sensor, which generates a voltage, indicating position. The crankshaft sensor is part of the primary ignition system and functions as the "trigger". It detects the position of the crankshaft relays that information on to the PCM or the ignition module (depending on the vehicle) to control spark timing. The Camshaft position sensor detects the position of the camshafts and relays the information to the PCM. The PCM uses the CMP signal to identify the beginning of the injector sequence. What ties these two shafts and their sensors together is the timing belt or chain. The cam and crank should be precisely timed together. If the PCM detects that the Crank and Cam signals are out of time by a specific number of degrees, this P0016 code will set.
Symptoms Possible sumptoms of OBD code P0016
Malfunction Indicator Lamp (MIL) illumination The engine may run but with reduced performance The engine may crank but not start The engine may exhibit a rattle near the harmonic balancer indicating the tone ring is damaged The engine may start and run, but poorly
Causes Possible causes of OBD code P0016
Timing chain stretched, or timing belt skipped a tooth due to wear Misalignment of timing belt/chain Tone ring on crankshaft slipped/broken Tone ring on camshaft slipped/broken Bad crank sensor Bad cam sensor Damaged wiring to crank/cam sensor Timing belt/chain tensioner damaged
Possible Solutions First, visually inspect the cam and crank sensors and their harnesses for damage. If you notice broken/frayed wires, repair and recheck. If you have access to a scope, check the cam and crank patterns. If a pattern is missing, suspect a bad sensor or a slipping tone ring. Remove the cam gear and the crankshaft harmonic balancer and inspect the tone rings for proper alignment and make sure they're not loose or damaged or that they haven't sheared the key that aligns them. If they are properly installed, replace the sensor. If the signal appears normal, then check the timing chain/belt for proper alignment. If it's misaligned, check for a damaged tensioner that may have allowed the chain/belt to slip a tooth or several teeth. Also check that the belt/chain isn't stretched. Repair and recheck.

Nov 05, 2015 | 2010 Jaguar XF

1 Answer

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.

Jan 22, 2013 | Cars & Trucks

1 Answer

Will not start no spark


You cannot. Could be crank sensor. most likely cause. Other is faulty coil if it only has one.... If it is real early model it could be a broken distributor gear, broken cam shaft, timing chain.
Must check on scanner to see if there is a crank signal. no magic for the module.

Apr 27, 2012 | 1991 Geo Metro

1 Answer

I have error cde PO016 will clear for 20 min. then comes back on


The crankshaft position sensor (CKP) and Camshaft position sensor (CMP) work in harmony to control the spark/fuel delivery and timing. They both consist of a reluctor, or tone, ring which passes over a magnetic sensor, which generates a voltage, indicating position.

The crankshaft sensor is part of the primary ignition system and functions as the "trigger". It detects the position of the crankshaft relays that information on to the PCM or the ignition module (depending on the vehicle) to control spark timing. The Camshaft position sensor detects the position of the camshafts and relays the information to the PCM. The PCM uses the CMP signal to identify the beginning of the injector sequence. What ties these two shafts and their sensors together is the timing belt or chain. The cam and crank should be precisely timed together. If the PCM detects that the Crank and Cam signals are out of time by a specific number of degrees, this P0016 code will set.

Causes may include:
Timing chain stretched, or timing belt skipped a tooth due to wear
Misalignment of timing belt/chain
Tone ring on crankshaft slipped/broken
Tone ring on camshaft slipped/broken
Bad crank sensor
Bad cam sensor
Damaged wiring to crank/cam sensor
Timing belt/chain tensioner damaged

First, visually inspect the cam and crank sensors and their harnesses for damage. If you notice broken/frayed wires, repair and recheck.
If you have access to a scope, check the cam and crank patterns. If a pattern is missing, suspect a bad sensor or a slipping tone ring. Remove the cam gear and the crankshaft harmonic balancer and inspect the tone rings for proper alignment and make sure they're not loose or damaged or that they haven't sheared the key that aligns them. If they are properly installed, replace the sensor.
If the signal appears normal, then check the timing chain/belt for proper alignment. If it's misaligned, check for a damaged tensioner that may have allowed the chain/belt to slip a tooth or several teeth. Also check that the belt/chain isn't stretched. Repair and recheck..

Mar 12, 2010 | Ford Mustang Cars & Trucks

4 Answers

My chevy express van 1500 cranks but wont start


test and see if you have spark and fuel preasure, you may have bad feul pump, common problem is the fuel pump goes bad, but check before replacing.

Oct 01, 2009 | 2000 Chevrolet Express Cargo

1 Answer

Bucking engine


Check the fuel pressure,also change the fuel filter.check the crankshaft sensor,or replace.It sounds more like the tps sensor(throttle position sensor).It is mounted in line with the throttle axle,on the throttle horn.Of course .with out being there and checking I am just guessing.But map sensor or mass air flow sensor could also cause this.Have you checked the air filter?This will cause the problem,if it is stopped up restricting air flow to engine and mass air flow.,map sensor,and vacuums needed to run the car.If I can help,let me know.

Sep 23, 2009 | 1988 Oldsmobile Delta 88

2 Answers

Crank sensor


The crank sensor is behind the harmonic balancer. Not too hard to replace, the harmonic balancer is supposed to come right off but I needed a big 2-jaw puller to get it off.... accessed through the wheel well.

Jul 11, 2008 | 1992 Oldsmobile 88

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