maf aux input

texasmrk

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Jul 21, 2010
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umm hi guys her is where i am at my 96 idles at ab out 400 to 500 rpm .The car will die from time to time if you have the ac on.This is only a prob at idel other wise the car runs great on the highway or in at low speeds .the codes it is throwing are the MAF aux input,any ideas on this ? I am a good parts changer but not so much on the diagnose side of things . thanks
 
When I read your first post I thought "IAC is bad" but wasnt sure about the MAF code..... then you post your "MAF Code", p1504 and p1507 are not MAF. Both are IAC codes but I forget which. Low signal or cycle I think, I'll have to look it up.

Anyway, your IAC is bad.
 
oh cool i did clean the iac and i reinstalled it now the thing idles about 1400 or so so i think thats it i have ordered another one ill put it on towmarrow i do thank u guys for your help realy hope that fixes it that thing was very dirty .
 
1400 is way way too high. Its prolly haning open now. I never have had good luck cleaning them. Just dont get an Autozone one, they suck.

You never tried to adjust the set screw on the throttle body, have you?
 
no i haven't but i have ordered a new one the only reason i put the old one back on was to start it im getting one from the local parts house .i just drove it and its not to bad in gear it drops to about 1000 or so and the new one will be here towmarrow so ill put it on the . i havent messed with the set screw ill do that towmarrow if i need to .boy that thing is was in there but not to bad lol
 
If you havent messed with the set screw then you dont need to. I have just seen people use it to cure a low idle issue before.

You should be in fine shape when you get the new one in. :)
 
ok got it in runs good now thank u guys and the screw is unmolested ...

good the screw is adjusted at the factory, even the ford shop manuals say "DONT ADJUST THE SCREW" there is no info on how to readjust it nothing, ive seen people mess with it and they get to buy a throttle body next
 

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