Engine Idle
#1
Engine Idle
Question: would a sticky IAC valve be the cause of idle speed changing? Most of the time the car idles at 7-800, but every now and then it will drop to 600ish. If I blip the gas it jumps back to the 7-800 mark.
If this is the case, should I just replace the IAC or is there something I can do with what's on the car?
If this is the case, should I just replace the IAC or is there something I can do with what's on the car?
#2
Re: Engine Idle
Does the RPM drop correspond to A/C cycling (if you still have A/C)?
Any chance the throttle blades are hanging up a bit, and suddenly releasing?
Shoebox's IAC Check:
http://shbox.com/1/iac2.jpg
Any access to a real time PCM scanner, which allow you to observe how the PCM responds to the RPM drop, with respect to IAC counts?
Any chance the throttle blades are hanging up a bit, and suddenly releasing?
Shoebox's IAC Check:
http://shbox.com/1/iac2.jpg
Any access to a real time PCM scanner, which allow you to observe how the PCM responds to the RPM drop, with respect to IAC counts?
#3
Re: Engine Idle
I have an Actron scanner, I should be able to watch it from there. I have opened and closed the TB a number of times (hot and cold), and don't feel anything catching. No A/C on the car right now.
I will try to look at this over the weekend. Thank you Fred!
I will try to look at this over the weekend. Thank you Fred!
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