Hunting idle
Got a 1995 wagon with 3.0 V-6, 60,000 miles. Seems that after it warms up it starts this idle hunting thing. Almost stalls then rpm's go up, then almost stalls and continues like that. Sometimes when after shutting it off, it will start and then stall. Then after starting again it will hunt. Always starts right back up. I took it to the shop and they changed the EGR sensor because of a code they got out of the computer but it still does not idle correctly. It is going back to the shop to get the codes cleared and we start all over again.
I don't have a code reader so not sure of the code numbers. I did several searches on this forum and found that it could be EGR valve or IAC valve causing some of these problems. I checked the vacuum hoses and could not find any leaks. Also, while the car is idling (just barely) I disconnected one of the small vacuum lines on the intake manifold and the car would idle smooth with a vacuum leak.
I was gonna remove the IAC and give it a cleaning. Any way to test this valve to see if it is opening?
Other thoughts?
Great site! TIA!
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