[QUOTE=LightFighter;4529275]can you scan....... the PCM? or see it with any diag scanner?

QUOTE]

I scanned it after it happened, but I probably cleared any new codes when I disconnected the PCM trying to reset anythign hoping to get it started while I was on the side of the road. The same crankshaft position relearn code comes up...can be cleared with HPTuners, but I think the truck has to be running to do it.

 

Today I pulled the cam sensor and wires to verify I had spliced the extension properly (my original loom was set for the rear cam sensor location and with the new LSx I have the front mount location). After this fussing around, after a few attempts at starting with no luck – even more trying and it started and ran until I turned it off. It then started up right away again. I turned it off and have not been able to start it again.
I too changed the Crank sensor and this made no difference. It would appear that we have very close to the same problem – I’m still working on it and will let you know if I can get it to run properly.

 

40Mike thanks for the input. Keep me posted and I will do the same.

 

Spliced? they make an adapter reloction

http://www.lingenfelter.com/mm5/merc...gory_Code=C162

 

Been doing some more research. Does this sound like a passkey problem to anyone? It's got fuel pressure to the rail and it deffantly has spark.

 

I had the same issue with a truck a while back and it was the camshaft sensor.....and the sensor was good, the issue was the timing gear had come loose and the cam was walking forward loosing signal with the cam sensor. Not sure if that is your problem, but it is an easy thing to check with a scan tool.

 

Well, I think I have found my problem (unless of course there is another lurking beyond this “truck quit and won’t start” problem).

It seems I only have intermittent Ground coming into the Gray coil pack connector on bank #2. If I temporally ground the black wire coming into this connector the truck starts and runs per normal. While running, if I remove this temp ground the engine dies immediately. I know bank #1 has a solid ground, anyone know why the engine won't run on just bank #1 when I pull the temp ground off bank #2 ???

Does anyone know if just splicing in a new ground to this looms black ground wire will present any other problems? I'm trying to avoid pulling the entire loom apart to find out what disturbed the ground to bank #2

I have read many No-Start threads and many tell you to make sure you have grounds to the coil packs – I thought this simply meant to make sure your mounting bracket was grounded. Well now I think I understand – they mean, make sure the black wire coming into the connector is Grounded.

This worked for me, I hope you can use this information to solve your no-start problem.

Hardy Handshakes - Swede

 

Finally got the truck running!!! Hooked up HP Tuners and we noticed that the MAP was stuck on 12. Decided to pull it off and the local parts house had a replacement Buick Grand National 2 bar map sensor. Plugged it up and the truck fired right up.

Now still have to perform the crank position sensor relearn. Any body have step by step directions for HP Tuners to perform the relearn?

Thanks

 

We performed the CASE relearn over the weekend with HP Tuners. In case anyone needs the info...

Make sure your truck is running, then turn it off. After at least 10 seconds turn the key back to the on position but don't start the truck and open up the software and start the CASE relearn. Rev the motor slowly up to 4,000 rpm and the truck will cut the fuel and immediately take your foot off of the gas. The light should go off and truck will return to idle.

 

Good deal man, glad you're back on the road.