fasterthanyou925
Newbie
- Joined
- Feb 17, 2014
- Messages
- 43
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Hey there I've been lurking on these forums for years but have never posted. I've had 7 GMT400's ranging from 4.3 long beds to a 92 SCSB that I had a alum head 355 to a couple vortec trucks, but I'm stumped on this one. It's a 95 Tahoe 4WD that I just picked up for going up to Reno/Tahoe and the like for the winter.
Picked her up for 800 bucks, has Colorado plates on it, found some receipts from in December stating that they replaced the fuel tank, lines, filter, and rebuilt the TB with new throttle bushings, regulator, and new ICM. Has 3" exhaust with a cat and a 40 series on it.
When at a stop light it will randomly run like crap (surging) and die if I don't pop her into neutral...put it back in drive and it's fine. Pinned A and B and came back with a TPS code and a Code 43. Replaced the ESC (put a 95 4wd Tahoe PCM in) and it killed the TPS code but the 43 is still there. Tries a CTS and it started running like crap on cold start...go figure. Put a good CTS in (from a running truck) and still runs like crap and on fire up (very rich) then clears up when I pull out of my driveway and get to my stop sign. (Also had an off idle to 1800rpm miss which I finally cured by unplugging the EGR)
Other than the intermittent surging/dying at idle the truck runs awesome, shifts good, ect.
Any ideas?
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Picked her up for 800 bucks, has Colorado plates on it, found some receipts from in December stating that they replaced the fuel tank, lines, filter, and rebuilt the TB with new throttle bushings, regulator, and new ICM. Has 3" exhaust with a cat and a 40 series on it.
When at a stop light it will randomly run like crap (surging) and die if I don't pop her into neutral...put it back in drive and it's fine. Pinned A and B and came back with a TPS code and a Code 43. Replaced the ESC (put a 95 4wd Tahoe PCM in) and it killed the TPS code but the 43 is still there. Tries a CTS and it started running like crap on cold start...go figure. Put a good CTS in (from a running truck) and still runs like crap and on fire up (very rich) then clears up when I pull out of my driveway and get to my stop sign. (Also had an off idle to 1800rpm miss which I finally cured by unplugging the EGR)
Other than the intermittent surging/dying at idle the truck runs awesome, shifts good, ect.
Any ideas?
Sent from my iPhone using Tapatalk