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01 GTS running bad, Help!

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01 GTS running bad, Help!
Old August 31st, 2013, 12:47 AM   #1
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01 GTS running bad, Help!

After racing a camaro 4th gen, and winning.. Of course. We pulled back into the parking lot and my car was running rough sounding like an exhaust leak or small knock? i called a buddy and he said it could be the throttle bodies out of sync, anyone hear of a car acting like this in general? Thanks
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Old August 31st, 2013, 02:41 AM   #2
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I heard TB's out of sync was more related to shitty idle and revs than what you are describing. Are you getting ping at idle??
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Old August 31st, 2013, 04:34 AM   #3
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Possible your exhaust has come loose somewhere?
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Old August 31st, 2013, 04:45 AM   #4
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Well first you got to find out where the knock is coming from... It it's a exhaust leak you should hear it with the lop of the cam/bank it's on.. I'd start there...


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Old August 31st, 2013, 10:46 AM   #5
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Pulled the codes p0175, p0172 p0155, blowing some black smoke when I rev it.
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Old August 31st, 2013, 10:57 AM   #6
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Those codes are all related to richness / O2 sensor. I doubt it is throttle bodies on an '01. One thing to do, assuming you don't get out and run the car that hard every drive, is to just drive it and see if it clears up. An extended run at WOT may have engaged some fuel table settings rarely used (and not optimized hence the black excessively rich condition). You may have an O2 sensor going bad too. That is a 13 year old car Rock Auto has the OE Bosch sensors cheap. A PCM reset could also be a cheap thing to try.

What mods are done to the engine including any SCT tuning?
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Old August 31st, 2013, 11:17 AM   #7
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Could also be a stuck injector or a blown headgasket. Loose sparkplug?

If you get an exhaust leak it could cause the rich condition because of air getting to the sensor causing a rich fuel setting...
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Old August 31st, 2013, 12:33 PM   #8
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I hope it's not a head gasket! I'm gonna pull the plugs and reset the computer too see what it does. It will will run rough and try to die.
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Old August 31st, 2013, 12:34 PM   #9
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And it's all stock. I ordered headers intake and roller rockers. George at boost performance said could be spark plug push rod or rocket arm.
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Old August 31st, 2013, 01:13 PM   #10
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Quote:
Originally Posted by 01atomicgts View Post
And it's all stock. I ordered headers intake and roller rockers. George at boost performance said could be spark plug push rod or rocket arm.
That's why you an atomicgts?
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Old August 31st, 2013, 01:49 PM   #11
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Lol, dang auto correct. I pulled the plugs and they didn't look good. Change them cleared the codes and it tried to do the same thing..
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Old August 31st, 2013, 02:07 PM   #12
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Does is still knock or have any unusual sounds? Did you reset the PCM? Clearing codes is not the same as a PCM reset.
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Old August 31st, 2013, 02:11 PM   #13
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Is the black smoke out both banks?
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Old August 31st, 2013, 04:16 PM   #14
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What kind of roller rockers did u get? Before you install any mods, get the car running straight.
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Old August 31st, 2013, 05:49 PM   #15
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How many miles? Is the battery fresh & good? If all plugs looked bad and running rich on both banks, I'm going to guess it's a fuel delivery issue. You should test/check the related components: TPS, MAP, clean IAC while you're at it.

I've seen more TPS failures than MAP sensor failures, especially if it's dumping too much or not enough fuel on throttle stabs - it has heavy influence on those fuel values. For some reason the TPS is the last sensor to throw a code unless it's grossly out of range.
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Old August 31st, 2013, 06:39 PM   #16
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Where's the TPS at? I bought some O2 sensors but have to wait till tomorrow for a lift it did the same thing to plugs. Tried another map sensor no luck and I unplugged the 3plugs at PCM for about 4 minutes.
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Old August 31st, 2013, 06:56 PM   #17
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The best way to reset the PCM is to disconnect the + battery cable at the battery and short it against the frame. Disconnecting the 3 plugs at the PCM takes 24 hours to work and then it is even iffy. That info, from Chuck Tator's input.
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Old August 31st, 2013, 07:06 PM   #18
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How far back are the upstream O2 sensors? I looked at my TPS sensor I don't think it's that. I put it back on the scanner. And it only read bank 2 sensor one so right front o2?
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Old August 31st, 2013, 07:14 PM   #19
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They are in the collector area of the factory header. Gotta get the car up in the air a tad to get at them. Pretty close to the engine.
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Old August 31st, 2013, 10:52 PM   #20
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Going to have to pull it on the lift. It is dying at idle now.
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