Cranks no start and the spark plugs are not getting spark

ROBERTMAESTAS

MEMBER
1994 PONTIAC BONNEVILLE
3.8L
6 CYL
2WD
AUTOMATIC
200,000 MILES

Car will crank and try to start. When checking spark plugs I am not getting any spark to them. Checked ICM, checked crank sensor, checked alternator, checked computer. I need new ideas.

Sunday, December 11th, 2016 AT 7:14 PM

5 Replies

HMAC300

MECHANIC
48,601 POSTS

If you have a tachometer unplug it see if it starts. Then take ignition module to auto parts to get checked. Check pick up coil for resistance 600-1000 ohms.

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Monday, December 12th, 2016 AT 7:53 AM

ROBERTMAESTAS

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3 POSTS

So I checked the power to the ICM, I am not getting spark on the coil packs or plugs.

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Monday, December 12th, 2016 AT 9:21 AM

HMAC300

MECHANIC
48,601 POSTS

I messed up on this one. First scan for codes cross a and b on aldl then see pictures to help with diagnostics. We have had one tip to unplug oil pressure switch see if it will start. Also check fuses for being blown. Charts will tell you how to diagnose the problem.

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Monday, December 12th, 2016 AT 9:44 AM

ROBERTMAESTAS

MEMBER
3 POSTS

This car was running, I did head gaskets, and put in a new heater core. Fuel injectors are working, icm is show in power on multimeter, but not on coil packs or spark plugs

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Monday, December 12th, 2016 AT 10:25 AM

HMAC300