WHEN AC IS ON ITS EVEN WORSE I GOT A NEW IAC AND NEW TPS .....NOW WHAT??
1996 COBRA HANGING IDLE
- Thread starter JREYNOSO916
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Mustangpower97
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Is your throttle return spring in good shape?
Sent from my XT1030 using the svtperformance.com mobile app
Sent from my XT1030 using the svtperformance.com mobile app
Imma have to check that out
It's bad when my ac/defrost is on ....I just noticed this last weekend cause I just fixed my ac and I rarely even use the defrost
Anything on this? I have the same issue
1996 mustang cobra... many mods...
1996 mustang cobra... many mods...
Nope I checked the spring on throttle body like dude in post told me to check and I can't figure it out......waiting on a miracle lol
Have you tested the TPS?
http://www.checkenginetroublecode.com/p0122-ford-4-6l-testing-a-mustang-tps/
http://www.checkenginetroublecode.com/p0122-ford-4-6l-testing-a-mustang-tps/
When you say hanging idle, for how long and at how much RPM?
These cars are designed to idle higher for a couple seconds when coming to a complete stop to prevent the load from the power steering and brakes (hydroboost system) from stalling the car. It should idle up (~1000 RPMs) when coasting and for a couple seconds when coming to a complete stop, then idle down towards ~850-ish RPMs, IIRC.
When the A/C is on, it naturally idles up to compensate for the A/C compressor load as well as the hydroboost system.
Performed any recent work to the car lately? Did you have the car tuned recently?
Did you test for vacuum leaks? Vacuum leaks post MAF on a NA car would cause a lean condition being caught by the O2 sensors, the ECM would then command more fuel by STFT resulting in a higher than normal idle condition. If you could datalog, you would be able to verify this.
These cars are designed to idle higher for a couple seconds when coming to a complete stop to prevent the load from the power steering and brakes (hydroboost system) from stalling the car. It should idle up (~1000 RPMs) when coasting and for a couple seconds when coming to a complete stop, then idle down towards ~850-ish RPMs, IIRC.
When the A/C is on, it naturally idles up to compensate for the A/C compressor load as well as the hydroboost system.
Performed any recent work to the car lately? Did you have the car tuned recently?
Did you test for vacuum leaks? Vacuum leaks post MAF on a NA car would cause a lean condition being caught by the O2 sensors, the ECM would then command more fuel by STFT resulting in a higher than normal idle condition. If you could datalog, you would be able to verify this.
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