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Thread: help anyone
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08-27-2013, 07:45 AM #1Junior Member
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blue- 1998 trans am ws6
help anyone
I have a 98 trans am ws6 it started running bad like a week ago feelin like its about to cut off wen I come to a stop r wen I drive around the block but wen im on the bridge its fine. Do anyone have a clue
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08-27-2013, 07:57 AM #2Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
Any codes or anything?
1998 Trans Am WS6 - Phantom
421 CI LQ9, Tick Performance Custom Cam, TFS 255cc LS3 heads, Kooks 2" LT headers, Kooks 3" True Duals w/ high flow cats, FTP 104 lid, Speed Density Tune, 4" silicon tube, LS6 VCT, FAST 102 Intake, NW 102 TB, Oil Catch Can, SLP Bilstein Shocks w/ Vogtland Springs, CTS-V 4-piston Calipers w/C6 Z06 rotors, Stainless Steel Brake Lines, R1 concepts premium rotors, Hawk HP+ brake pads, VFN WSQ Hood, C5-R timing chain, SLP oil pump, E85 tune, Walbro 450 fuel pump, Deatschwerkz 95# injectors, Breathless performance headlights, Frost Tune, !HVAC.
(Coming Soon) BMR DSL, UMI TQ Arm
421 LQ9 14.8:1 on E85 Build/
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08-27-2013, 08:02 AM #3Senior Member
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black- 2002 WS6
I forget when they did it, but at some point they dropped the EGR. IF you there is an EGR on your car I would start there and clean it up or replace it. When's the last time the plugs or fuel filter was changed?
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08-27-2013, 08:03 AM #4Junior Member
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blue- 1998 trans am ws6
haven't had a chance to put it on the machine
No not yet
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08-27-2013, 08:04 AM #5Junior Member
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blue- 1998 trans am ws6
I brought it 2yrs ago
Never changed it
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08-27-2013, 08:23 AM #6Senior Member
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black- 2002 WS6
It quick and cheap insurance to change it, whether it is the issue or not, I never trust the previous owners maintenance work. One more thing to look for, check for cracks in the bellows after the MAF, it has happened before to another members car.
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08-27-2013, 09:13 AM #7Senior Member
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
I would check your fuel pressure at the rails and then check the other basics like plugs and wires as well as the MAF (make sure it is clean). It should be around 58 psi. The feeling like it is going to cut off sounds like a fuel issue. Out of curiosity what rpms arw you at usually when it feels like it is going to cut off? Also are you modded at all?
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08-27-2013, 10:35 AM #8Veteran
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98 Formula- 06 duramax
check for a vacuum leak....the pcv hose likes to crack on the backside where it turns to go into the intake. When you say "cutoff" do you mean it's idling low or missing?
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08-27-2013, 03:26 PM #9Senior Member
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Black / White- '00 T/A M6/'19 Hemi Truck
sounds like a bad vacuum leak...does it idle high when you are almost at a stop or going say, 5-10mph? I just went through a very similar issue...
Last edited by theorangeguy; 08-27-2013 at 03:40 PM.
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08-27-2013, 04:50 PM #10Veteran
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Black & Blue- '02 WS.6 / '07 Suburban
Has there been any work done on the car recently?
Other than that, these guys have pretty much nailed down the most likely issues.
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08-27-2013, 09:39 PM #11Junior Member
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blue- 1998 trans am ws6
It doesn't idld high n I also smell gas
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08-27-2013, 09:40 PM #12Junior Member
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blue- 1998 trans am ws6
It does smell like gas sometimes
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08-27-2013, 09:42 PM #13Junior Member
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blue- 1998 trans am ws6
Yes it idle low n plus I smell gas
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08-28-2013, 02:40 AM #14Veteran
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Black & Blue- '02 WS.6 / '07 Suburban
Has the air filter been replaced lately? Also, how about cleaning the throttle body? It gets gummed up, especially with the oil that is pulled in through the PCV system (that's why catch cans are recommended on our cars) and once it gets to the point of restricting airflow around the closed throttle blade you will have issues. The IAC (Idle Air Control valve) is also a potential culprit and may be gummed up as well.
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09-19-2013, 09:18 PM #15Junior Member
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black- 2001 trans am ws6
I had a very similar problem before. It turned out to be the IAC. Idle air control valve. It was an easy fix.
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