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High Idle - Cleaned Tbs, Maf, Contacts. Please Help A Noob!


elcid
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Hi guys.

 

I am a Noob, so please help me out.

 

My 1994 pathy auto is idling at 1000 RPM once warmed up. This issue became apparent right after I did some basic maintenance like cleaning the Throttle body, MAF contacts, TPS contacts etc. I also replaced a faulty fuel injector. Now, I cannot get the truck to idle at its normal 700-800 range.

 

Also, I have a problem starting the truck from cold/hot. It takes several cranks and a bit touch of gas to get it started. Once running, it runs smooth. no problem what so ever.

 

 

I am thinking I may have the vacuum hoses connected wrong ( from the canister to the egr to the AIV ? ) I disconnected them while removing the planum in order to replace the injector.

 

I would appreciate if someone could take a pic or show me a diagram on how the vacuum hoses connect to and from egr and the canister.

 

 

thanks guys.

 

sorry about my Noobiness!

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Did you turn the TPS sensor at all? I've heard that having to re-adjust them is a bitch...

 

Re-check the wiring on the MAF sensor as well. They have a tendancy to become brittle and bent/partially disconnected over time from smacking the hood.

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Did you turn the TPS sensor at all? I've heard that having to re-adjust them is a bitch...

 

Re-check the wiring on the MAF sensor as well. They have a tendancy to become brittle and bent/partially disconnected over time from smacking the hood.

 

 

Hi,

 

thanks for the reply.

 

I did not turn the tps sensor. I just unplugged the contacts, gave it a good cleaning and threw some dielectric lub in them. They had green corrosion going on.

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Ok, go into the Garage section and pinned at the top is a thread that has a link to a free Factory Service Manual for your year. There is your vacuum diagram and much more... ;)

 

ALso, check to see if you have any vacuum leaks. Visual first and then spray any suspected areas with a flammable aerosol (wd-40, carb cleaner, etc) with the truck running. If the idle increases, you have an intake vacuum leak. Please use common sense, safety glasses, etc...

 

B

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Ok, go into the Garage section and pinned at the top is a thread that has a link to a free Factory Service Manual for your year. There is your vacuum diagram and much more... ;)

 

ALso, check to see if you have any vacuum leaks. Visual first and then spray any suspected areas with a flammable aerosol (wd-40, carb cleaner, etc) with the truck running. If the idle increases, you have an intake vacuum leak. Please use common sense, safety glasses, etc...

 

B

 

 

I don't think WD40 is flammable any more.....thought they changed that a few years ago.

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I ran into a similar problem, and it turned out to be the "idle up" portion of the AC system. Loose/dirty connection fixed it. Cannot remember the technical name of that circuit, but hey its 0600 and I'm dreading work...

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