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Old 04-13-2014, 02:36 PM   #1
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Default 2002 bonneville stall

I have 2 bonnevilles, 2000-2002. Both stall while driving.I will just talk about the 2002 since we have been working on that one. I have replaced the crank pos. sensor,ICM, Computer with a flashed to vin# and the mass air. .We replaced the mass air after a weak code was there.After the mass air was replaced it stalled again a mile away like you turn the key off. we got it to act up wiggling wires and cut and regrounded the main 6 -7 wire plug by the waterpump.Thought we had it licked. It stalled again. It starts just enough for the r,* to get up and shuts down.no codes. After we replaced the cps and ICM and computer,it stalled and wouldnt start,and had a mass air code. My mech. cleared the code and it started. Thats when I put a mass air in. It stalled again and we got it started again,then did the grounds. I drove it home and it stalled the next day and will start/stall immediately. HELP
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Old 04-13-2014, 07:12 PM   #2
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Does it still act up when you move that wire harness?
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Old 04-13-2014, 10:39 PM   #3
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It stalled in the am and I left it. I have not tried that,, I towed the car and did not try to start it, waited to have my mechanic scan it ,I have not heard if he got a code

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Old 04-14-2014, 11:15 AM   #4
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crank sensor controls icm directly for rpm 0 to 5-600 then pcm is supposed to take over. sound like something is going on with the pcm or pcm to icm wiring
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Old 04-14-2014, 07:23 PM   #5
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Quote:
Originally Posted by jwfirebird View Post
crank sensor controls icm directly for rpm 0 to 5-600 then pcm is supposed to take over. sound like something is going on with the pcm or pcm to icm wiring
While it was acting up and before we re grounded all the wires in that plug,,,we put the old pcm back in and it still acted the same as to not start... We then kept on with the wire wiggle and could make it not run,thats when we re grounded wires. All was good till the next morning. Could be I should put the new computer back in . or like you say maybe a wire between icm/pcm Tx
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