I actually had the screw on my original factory throttle body strip out about half way up the threads, not allowing it to be adjusted down any further, this could be your prob. It the scerwon yours botoming out when you turn it all the way clockwise?
i think that this is your problem!
let me know, you can try and take a plug and plug the hole where the Iac goes into the TB behind the butterfly and then adjust the idle via the voltage screw. and see what that does, if it goes down the screw isn't all the way down on the TB
i think that this is your problem!
let me know, you can try and take a plug and plug the hole where the Iac goes into the TB behind the butterfly and then adjust the idle via the voltage screw. and see what that does, if it goes down the screw isn't all the way down on the TB
You also need to check the voltage on the TPS sensor-to do this you take a voltmeter and check the volts on the middle wire(there are three) and then get a good ground, your voltage should be btween ..950 and .999 most likely just slightly less than one volt my sweet spot seems to be around .992
I also had an idle problem with my SN95. Every day the idle seamed to get higher and higher up to about 2k. I tried all the thing you’re supposed too but no luck. To drive it I ended up blanking off the IAC and got the car to idle. I drove it like that for a few months until I had a problem with the motor cutting off while driving on the freeway. Only then did my computer come up with an error. It said the PIP was bad. I replaced it and then decided to try to put the IAC back on. And guess what? Everything was back in working order.
I would bet it's not the TPS. The TPS on a 94/95 is baselined by the EEC when you start the car, and it's not designed to be adjusted. If it is far enough out of whack that the EEC can't deal with it, then you'll get a MIL.
I like DavidF's idea -- a lot of people with 94/95's seem to be having ignition malfunctions lately, it may be that we're reaching the average lifespan for the stock equipment. That's what I would check.
Dave
I like DavidF's idea -- a lot of people with 94/95's seem to be having ignition malfunctions lately, it may be that we're reaching the average lifespan for the stock equipment. That's what I would check.
Dave
I wasn't thinking that something was wrong witht he tps i just figured if the voltage was too high then the screw ont he throttle body that moves the butterfly itself along with the tps, was screwed in too far and allowing too much air in through the tb itself and not even through the IAC
just a thought., I've been wrong before but just trying to help
jason
just a thought., I've been wrong before but just trying to help
jason
When my PIP went out on me it just caused a rough idle not high though. It's a PITA to change, because not only do you have to pull the distributor, the shaft has to come off and the gear at the bottom. I pulled my distributor and took the whole thing to local gas station and they changed it for $5. Of course that was well before my idle decided to climb to 3000.
MAN you are having somer real issues with that thing, did you ever check the voltage on the tps. was it normal? not thinking it is the tps but maybe the tb oopen too much. I would take the tb off and take a good look at everything, another thing i would do is once i got everything revonnected i would take loose the IAT sensor and see if the idle changed, i know this sounds funny but i can unplug it and my whole idle changes.
Maybe we can help you getthis thing worked out eventually.
jason
Maybe we can help you getthis thing worked out eventually.
jason