Car wont stay running after header install.
03-20-2006, 07:08 PM
#21
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yea i think something got fried tech worked on it today but computer wont let him in he clears the codes and it locks him out again. now im a little worried about fried pcm or bcm the guys down at the dealership are working hard but its a long process. arching not good but it was just a lose conection jumping spark from battery cable to i guess the starter itself it wasnt close to the header or engine. the closest sending umit was oil pressure and its fine. i dont know ill leave it to the techs and hope for the best
03-20-2006, 07:11 PM
#22
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ok from what i understand that it is throwing a p1627 witch is a fuel cut off thru the vehical anti theft but when they got to reprogram the anti theft it throws the code and will not let them download it to the car any one ever run in to this
03-21-2006, 02:05 PM
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update: as of the time of this post still not running more than 5 seconds i no longer need a mechanic i need an exorcist. tech still working hard to solve the problem but it is definitly electrical. seriously thinking about not getting the cam installed.
What exactly has the mech done to the car so far? What has he swapped out in troubleshooting?
03-21-2006, 02:24 PM
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tech 2 programming and he is on the gm tech line talking to them . i think he is going to start replacing elctical components soon. the guy is pretty good so im confident it will get done im just clueless as to what caused it. other than the programming so far thats all that has been done
03-22-2006, 04:17 PM
#29
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Originally Posted by black1999-z28
its done they figured it out it was a bad ground line to the fuel relays the beast lives again
03-22-2006, 10:52 PM
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on the driver side of the engine near the firewall about 1/2 way down block is a ground wire. the wire is conected to a bolt on the motor with a c style end. when pushing the header up from the bottom i guess it caught the wire and pulled it from behind the bolt. we looked and looked but just never saw it. syptoms were so similiar to vats everyone started pcm and bcm diagnosyics and it was ohhhhh soooo simple
03-22-2006, 11:34 PM
#32
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Originally Posted by hennesseycpl
on the driver side of the engine near the firewall about 1/2 way down block is a ground wire. the wire is conected to a bolt on the motor with a c style end. when pushing the header up from the bottom i guess it caught the wire and pulled it from behind the bolt. we looked and looked but just never saw it. syptoms were so similiar to vats everyone started pcm and bcm diagnosyics and it was ohhhhh soooo simple
BTW, congrats on getting the beast up and running again
03-23-2006, 03:33 PM
#34
Originally Posted by 2xLS1
Don't worry. It will be more of a beast next week. 
03-23-2006, 04:37 PM
#35
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Glad you fixed the problem. I think this should serve as a public service announcement for disconnecting the battery before you do work in the engine compartment, even if you are not necessarily doing something electrical. You never can tell.
03-23-2006, 08:30 PM
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we did disconnect before working it was after everything got instsalled that the problems showed. we are still baffled at what happened
2xls1 i have all the confidence you guys will do it up for me and maybe it will be a little bit closer to a beast with a 100 shot and that cam.
just to clarify the problem was hard to diagnose because the ground would touch the bolt with the car sitting not running then when fired it would shake the wire losing contact to the bolt and kill the car im so glad its fixed as irony goeswhen i left the dealership got on it and the clutch is going so now it gets a spec with everything else it would have needed it anyway $$$$$$$ im broke now lol
2xls1 i have all the confidence you guys will do it up for me and maybe it will be a little bit closer to a beast with a 100 shot and that cam.
just to clarify the problem was hard to diagnose because the ground would touch the bolt with the car sitting not running then when fired it would shake the wire losing contact to the bolt and kill the car im so glad its fixed as irony goeswhen i left the dealership got on it and the clutch is going so now it gets a spec with everything else it would have needed it anyway $$$$$$$ im broke now lol
