cool good to hear your on the road again.

 

so i guess i spoke to soon. Drove it and brought it home on a flatbed. No spark on all coils. SOL on ideas.

 

any CEL? This can be caused by the Crank Position sensor, or the module. This is a pretty simple system as far as diagnosis goes.

Lets hope it is the CPS for the cost but the module for the ease of repair.

Massey

 

yep could be icm. when mine went it would run then not, seemed like when it warmed up it quit.

 

Also check for bent pins in the ICM plug... it is more common that one would think, runs in open loop but dies in closed loop because of a single bent pin. Ask me how I know this?

Massey

 

plugged in obd2 scanner and no codes. I'm going to replace the coil packs with some spares i have and see how that goes

 

Replaced the coils no go. Its not a open loop problems because it doesn't start at all. Is there anything else that can couse no spark to the coils. Im thinking something is failing before the coil.

 

Lack of a crankshaft position (CKP) sensor signal will prevent an engine from starting and stop it instantly if the signal disappears while the engine is running. The vane-type CKP used on the 3800 was problematic in past years (late 80s/early 90s). You have to pull the crankshaft pulley/harmonic balancer to replace it. Yuck.

 

Well can't be worse than a honda crank pulley those are ***** to say the least. Wouldnt that trow a code if it failed?

 

Depends on how it fails. If the ring on the pulley is the cause of the failure then no there will be no code. If it is dirt or something else in there that is masking the signal then no no code will happen. If the sensor is physically damaged but the coil inside is intact then prolly no code since the computer can read the proper resistance at power on. Now it will throw a code if it is out of range while driving or missing pulses, but you have to actually get started for that to happen.

Another thing that will cause the failure is the ICM, (the little box that the coils attach to) That is just like an ignition module only smarter. It does die just like ignition modules do as well. I know it is not cheap but give that a try too. Most wrecking yards will sell you the whole unit with coils for around $20- $30. This unit is the same on all 96-05 Series II engines, FWD or RWD.

Massey