2001 bonneville 3800 missing

Farmall99 · #1 11-08-2008, 04:26 PM

The engine is missing on #3 & #6. The coil is good as I swaped it with another one. I had the ignition module checked and it is good. I still have no spark from the 3-6 coil.What else could cause this problem that would not affect the other coils? It is a 2001 pontiac bonneville with the standard 3800 engine.

maxwedge · #2 11-09-2008, 08:53 AM

The module could still be bad, or weak input from the crank sensor or a bad connection between the cps and icm.

Farmall99 · #3 11-09-2008, 12:29 PM

Thanks MAXWEDGE. Would the crank sensor just affect the 3-6 coil and not the others? I am still suspicious about the icm. Where is the cps located as I would like to check the connection? The connector pins to the icm look great.

Farmall99 · #4 11-11-2008, 08:02 PM

Update
The ignition module that checked good was actually bad. I borrowed one from a friend and the car runs great. Got a new one on the way!

maxwedge · #5 11-12-2008, 07:58 AM

A lesson many have learned, the ign module field test is very inconclusive.

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