Aftermarket IAC Valve
#1
Aftermarket IAC Valve
Has anyone had issues with an aftermarket IAC valve???
I'm stumped....I'm sure some of you have seen my threads regarding my idle problem.
Still having the same issue...high idle at cold start and between gear changes until I shut off the engine and restart. I've cleaned the throttle body, installed new TPS sensor, and replaced the IAC twice with aftermarket part from local part store.
The idle was worse with new IAC, would not idle at all. The truck idle would bounce back and fourth and then stall with either of the new IACs. Ended up putting the old (OEM Ford) IAC back on and idle went back to idling high until restart. After restart Idle is great no problems. I can drive all day and not have idle problems unless I let the truck get cold. If I let it get cold I have to do the restart reprocess again and the idle is fine.
I would agree with some that say this is vacum leak, but I would think if it were a vacum leak it would still have the high idle after restart.
I'm stumped....I'm sure some of you have seen my threads regarding my idle problem.
Still having the same issue...high idle at cold start and between gear changes until I shut off the engine and restart. I've cleaned the throttle body, installed new TPS sensor, and replaced the IAC twice with aftermarket part from local part store.
The idle was worse with new IAC, would not idle at all. The truck idle would bounce back and fourth and then stall with either of the new IACs. Ended up putting the old (OEM Ford) IAC back on and idle went back to idling high until restart. After restart Idle is great no problems. I can drive all day and not have idle problems unless I let the truck get cold. If I let it get cold I have to do the restart reprocess again and the idle is fine.
I would agree with some that say this is vacum leak, but I would think if it were a vacum leak it would still have the high idle after restart.
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Ford Fuel Injection » Throttle Position Sensor (TPS) Here is how to check and set the TPS. DVM is Digital Volt Meter which can be used to check the voltages at the TPS.
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#9
Great info in this thread from another forum: Ultimate Throttle Position Sensor (TPS) Thread - FSB Forums
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