i have a 98 GT nothin major done to it, full exhaust flowmater wit no cats 373 gears bbk cold air intake underdrive pulleys. just recently my car will idle between 500 and 1k or up to 2k. and if im drivin at 60mph and put the clutch in to down shift the car will shut off. ive replaced the iac sensor mass are flow and tps. any ideas?????
idle problem
- Thread starter GTLifE
- Start date
nyuk98gt
15 Year Member
GTLifE:
The "engine dies when clutch is pushed in" symptom is pretty classical of a bad IAC valve. Now, the new valve could be bad or there could be an electrical problem with the IAC valve. Check the wiring to the IAC valve. Use a 5V DC source to check the IAC valve solenoid (it should toggle on/off as the 5V is applied and removed). Check the air hose connection to the IAC to make sure it has no holes or blockages.
Last thing, check the entire air intake tract to make sure that the temperature sensor is installed and there are no leaks anywhere.
That's about all I can suggest.
HTH,
Chris
The "engine dies when clutch is pushed in" symptom is pretty classical of a bad IAC valve. Now, the new valve could be bad or there could be an electrical problem with the IAC valve. Check the wiring to the IAC valve. Use a 5V DC source to check the IAC valve solenoid (it should toggle on/off as the 5V is applied and removed). Check the air hose connection to the IAC to make sure it has no holes or blockages.
Last thing, check the entire air intake tract to make sure that the temperature sensor is installed and there are no leaks anywhere.
That's about all I can suggest.
HTH,
Chris
wmburns
SN Certified Technician
Post #3
http://www.stangnet.com/mustang-forums/810729-starts-but-dies-idle-help.html
Since the IAC, TPS, and MAF has already been replaced, consider looking for a vacuum leak.
Next, check the throttle return spring. Any loose or binding?
http://www.stangnet.com/mustang-forums/810729-starts-but-dies-idle-help.html
Since the IAC, TPS, and MAF has already been replaced, consider looking for a vacuum leak.
Next, check the throttle return spring. Any loose or binding?
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