Ford F150 - high idle

ty.pull1963 · Posted: Thu Oct 11, 2007 5:29 pm Post subject: high idle

I just inherited a very nice ford f150 ext p/u but it was sleepiong for a couple of years but now i just woke it up, but it idled high and when i put in in gear it jerks, and as i drive being automatic as the gears change it jerks now im scarded to drive it , worrying about busting the drive trann up and advice to remedy this?

cb#53 · Posted: Thu Oct 11, 2007 5:35 pm Post subject:

i've never heard of this on an f150, but my girlfriennds mom had a ford car that did the same thing. it would idle at around 2000, it turned out to be a sensor on the transmission. It might help to clean the IAC(idle air control) on the back of the carbueretor, there is a section on it in the throttle body cleaning post. Hope this helps, by the way what year is it?

ty.pull1963 · Posted: Thu Oct 11, 2007 5:38 pm Post subject:

1995 5.8

ty.pull1963 · Posted: Thu Oct 11, 2007 5:44 pm Post subject:

its a 1995 w/ a 5.8l eng with only 53,000 miles on it.

cb#53 · Posted: Thu Oct 11, 2007 6:11 pm Post subject:

i'm not really sure on this one, if i'm wrong someone please correct me. If your trans is equiped with a vacuum modulator that controls trans fluid pressure from a vacuum line from the engine you might want to check it for cracks or breaks. I'm not sure if yours is or not. You also might want to check your MAP sensor. And again i'm not sure on this so dont hold me to it. If your trans doesnt have a vacuum line to it then it will either have a throttle cable that is actuated and moves the throttle valve when you press on the pedal, if yours is like this, check the cable for sticking. i'm about clueless but thats just my 2cents, hope it may help

ty.pull1963 · Posted: Thu Oct 11, 2007 6:33 pm Post subject:

hey 2 cents is alot better than nothing at all im new to the f150 but any advice is awsome thanx there.

Calvin F · Posted: Thu Oct 11, 2007 8:47 pm Post subject:

my 92 did the same thing

First off there is no carbrauter its called the throttle body
the IAC should be on the right side of it there are just 2 bolts 1 on top 1 underneath and a plug on the end unplugg it and pull it off the throttle body you should make a new gasket so go get some gasket paper and copy the old one

clean the inside of the IAC out with throttle body cleaner as good as you can and bolt it back on dont forget the gasket

if this does not fix the problem try the TPS (throttle position sensor)

cb#53 · Posted: Fri Oct 12, 2007 2:53 am Post subject:

thanks calvin, i really haven't had any experience with the pre '97 ford, sorry about that

ty.pull1963 · Posted: Sat Oct 13, 2007 6:55 am Post subject:

DOES ANYONE HAS A COMLPETE PHOTO OF A 5.8L ENG FROM A 1995 F-150 P/U?

Steve83 · Posted: Sat Oct 13, 2007 9:03 am Post subject:

http://forum.doom9.org/showthread.php?s=&threadid=51632

How many tubes connect to the top of the air filter box? 1 or 2? What transmission? If you don't know, post the TRANS code from the door jamb sticker.

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If the PCV system has been neglected, or if the oil hasn't been changed on schedule, the IAC may be contaminated & sticking. Cleaning it might allow it to work for little while, but they don't last long after cleaning.

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. '99 CV RIP

ty.pull1963 · Posted: Sat Oct 13, 2007 3:26 pm Post subject:

there are 2 tubes

ty.pull1963 · Posted: Sun Oct 14, 2007 6:08 am Post subject:

Omg, i just went out and pulled my iac and clogged and sticky was an understatement, i emptied 2 cans of throttle body cleaner to clean the iac out, installed a new pvc and about to change my oil but thankx u all for the wonderful advice, it idles the way it suppose to be its a awsome truck i will post some pics when i'm done.. thank u all again..

pete59edsel · Posted: Sun Oct 14, 2007 7:44 am Post subject:

The Caps Lock pic. ROFLMAO

Ah boy, thats a good ONE.
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