Car dies at idle from time to time

TX04WhiteL

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Hello everyone,
Having some problems with the Cobra as of lately. It doesn't do it when it's cold, but when the car is warm and at operating temps it dies from time to time. The RPMs drop at idle especially when coming to a stop at lights and such. I already replaced the idle air control motor. I did not get any codes from a vacuum leak or such... Somewhat dumbfounded as why it dies. Any help is appreciated.
 

coketo

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i had the same issue before and what i did was take my car back to a good tuner to get it tuned... so far my car is running good
 

r103

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Sounds like a bad vacuum leak. Mine did this it was the elbow on the back of the supercharger.
 

po-po 5.0

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Log your LTFT at idle. You might have a vacuum leak, but not have codes for it yet. If you have +20% LTFT at idle, but they drop below 10% off idle, I'd start looking for leaks.
 

TX04WhiteL

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Thanks for the help guys ill try logging it when I get home. Will it show me a percent or will it read different (like TPS voltage) using the SCT software?
 

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