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02-06-2007, 04:56 PM #1
- Join Date
- Jan 2006
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2000 black T/A Vert- Red 99 C5 Coupe sold
Popping and cutting out after header install?
After I installed my Pacesetter LT's, the car cuts out and pops in the upper rpm's. It is fine with regular driving.
anyone else had this problem?
Thanks,
Shawn
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02-06-2007, 06:16 PM #2
Is it throwing a SES yet? I dare say it is someything easy like an O2 sensor that did not get re connected all the way so your fuel mixture is getting messed up.
98 T/A: HPE 5.3 Heads, 238/242 113 cam, Kooks 1 7/8 stepped LT headers, Custom Y pipe, Cut out, Borla, NW 90MM TB, FAST 90MM Intake, TB Bypass, Under Drive Power steering and Crank, 150 Dry NOS, Yella Terra rockers, 3400 TC, HPE tuning,
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02-06-2007, 06:40 PM #3
Mine did it a few days after LT header install. Was due to my air/fuel ratio being pig rich. Would pop and backfire at random times... my a/f was 10:1 started feeling a hp loss too. Once I put it on the dyno and tuned it with a wideband all is good.
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02-06-2007, 11:42 PM #4
Another thing to check is your spark plugs. Very common to crack an insulator installing LT's. I'd also make sure a wire didn't fall against the headers and get cooked. Like was previously stated, make sure your O2's are hooked up correctly. The fronts harness comes down right above the k member, make sure you didn't put the rears up front by mistake.
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02-11-2007, 12:51 PM #5
yeah defintiley make sure u didnt put the rears up front, because its very easy to do. i did that but realized it right after i plugged them in.
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02-12-2007, 07:38 AM #6
- Join Date
- Jan 2006
- Location
- ar
- Posts
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2000 black T/A Vert- Red 99 C5 Coupe sold
would it matter which o2's I put in or are you talking about where they hook up to the harness?
I do have codes, but have not checked them yet. I took off the agr, so I know that is one of the codes.
Thanks,
Shawn
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