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Old 09-18-2004   #1 (permalink)
BoostedCobra is offline Rookie


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Granger, IN.
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Default Idling problems!

When I start my car, if I don't gas it, it dies. If I leave it running by itself dies. If I try to turn into somewhere at a slower speed (like 15 or so) while the clutch is pushed in or it is in neutral, it dies. Somebody told me my O2 sensors might be bad. I have no clue what it might be. Any ideas?
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‘98 Mustang Cobra
Procharger P-1SC, intercooled, N2O intercooler purge kit, BBK 65mm T/B, port-matched intake, 42 lbs. inj., Bassani X-pipe & Cat-Back, Tri-Ax, Boost & Fuel Pressure/Vacuum gage, Nitto DRs 245/45/17, 3.27 gears, Tuned by PHP.
443 rwhp & 393 torque.
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Old 09-19-2004   #2 (permalink)
badass98svt is offline Made Member

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Salem   New Hampshire
Default

sounds like your Idle Air Control.
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1998 SVT Cobra #4941 of 5174 built on June 19,1998
4.30s, Speedcal, WMS CAI, Pro 5.0 shifter, Sniper Tuner, March pulleys, Mac O/R H pipe, Flowmaster orig. 40's, King Cobra clutch, D/S rotors, FRPP 9mm's, Max. Motorsports C/C plates, Termy front control arms, H&R SS springs, MM solid steering rack bushings, Tokico HP struts and shocks, Mac subrames, HID Bi-Xenon 6000k kit, Saleen 18" wheels, Saleen S-281 spoiler, sequential tails
Up Next: Termi diff, 31 spline Axles, LPW girdle, MM LCAs
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Old 09-24-2004   #3 (permalink)
mustangtk is offline Made Member

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Its most likely the IAC. The O2 sensors have no affect on the way the engine is running until it enters closed loop.
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Old 10-28-2004   #4 (permalink)
carolinamuscle is offline Rookie


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South carolina
Default just an idea

I had a vortec charger on my 1997, check your air piping after the maf sensor. I had a situation similar and the only thing I can come up with is pressure buildup blew a vacum line from the bottom of the intake tube. Created exact situation. Also have you had the computer tuned for the kit and injectors? "just trying to help"
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