Have you tried to pull and clean the IAC? I would do that first. Certainly wont hurt. You can also look to see what its doing(or not) with it taken off and plugged in by turning the key fwd but not starting.For what it’s worth, I just spent about 20 minutes closely checking all the vacuum lines and electrical connectors (just visually). Everything looks brand new.
I may have reached the end of my competency here. I plan on having it towed to a shop next weekend. Otherwise I’m just gonna be throwing parts at it.
Which screw is it and which way do i turn it?Crankin' on the throttle stop might save you the cost of a tow. Maybe ask Indy if you have his permission to use a "flat blade". Then you may be able to drive it to the shop.
I do have a new in box IAC here. I may just swap it out and see where I end up. Couldn’t hurt.Have you tried to pull and clean the IAC? I would do that first. Certainly wont hurt. You can also look to see what its doing(or not) with it taken off and plugged in by turning the key fwd but not starting.
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I posted a picture in this thread. Turn it clockwise a half turn, then restart the engine. If you need more, you have to shut the engine off and restart or engine will think it's at part throttle. You can back off while it's running if the idle is too high. You're just trying to give it enough air to let it idle without stalling.Which screw is it and which way do i turn it?
For what it’s worth, I just spent about 20 minutes closely checking all the vacuum lines and electrical connectors (just visually). Everything looks brand new.
I may have reached the end of my competency here. I plan on having it towed to a shop next weekend. Otherwise I’m just gonna be throwing parts at it.
I read about the throttle blip test but the manual said that if this was applicable to my car, the code reader would prompt me to do this by displaying a "10", and it never did that throughout the test.You should probably do a cylinder balance test (throttle blip and end of KOER test? I forget) to see if you have any cylinders not firing properly. 91 is drivers side O2 sensor always lean. There's a bunch of troubleshooting for this code. Check for proper oxygen sensor ground, O2 function test (forcing rich condition while looking at O2 voltage) etc. EGR isn't there, correct?
I replaced it because I had a new one in the box sitting around and I spoke to a shop and they advised me to do so. Took me 5 minutes to do.did you learn your lesson with the IAC, it did not need replacing, but you couldn't resist
now you have a 91, what do you suggest first?
Ok, what do you suggest?change the 02........really...........wow