I just bought a 89 f150 xlt lariet, and when i start it it idles at 3 grand. Ive checked all my vacuum lines. they seem to be ok. Has anyone had this problem and if so how did you fix it?

curtisdavis1987
5

Asked by Oct 02, 2013 at 09:42 PM about the 1989 Ford F-150 S Standard Cab SB

Question type: Maintenance & Repair

4 Answers

tennisshoes
71,555

Check your idle speed control, it may have the plunger stuck open, also check minimum air rate, make sure someone hasn't cranked open the air valve in the throttle body.

Colin Rivet
2,875

idle air sensor

Tracy Hooks
20,195

No such thing Colin. Tennisshoes is right on track with this one. You have a large amount of air getting into the engine. Other sources are the Power Brake Booster and PCV. It's a big vacuum leak and shouldn't be that hard to find. 2 bolts to pull the IAC, you can clean it with carb spray and carefully move the plunger to see if it's free. Is the "Check Engine" light on?

Colin Rivet
2,875

idle air sensor or idle speed control ive hear them called both on different occasions,anyway I do agee with tennisshoes my comment was not meant to contradict his anser.ive had that part let go on me several times when I was running those old fords.sometimes in a jam u can clean it and get a few extra months out of them.

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 195,438 nationwide F-150 listings starting at $1,295.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 5,640
#2 dandyoun
dandyoun
Reputation 3,810
#3 tennisshoes
tennisshoes
Reputation 2,140
View All

Related Models For Sale

Used GMC Sierra 1500"
781 Great Deals out of 49,302 listings starting at $995
Used Ford F-250"
582 listings starting at $3,495
Used Ford Mustang"
704 Great Deals out of 41,887 listings starting at $1,500
Used Ford Ranger"
245 Great Deals out of 7,563 listings starting at $900
Used Jeep Wrangler"
281 Great Deals out of 13,844 listings starting at $2,795

Used Cars For Sale

2016 Ford F-150 For Sale
111 Great Deals out of 127,269 listings starting at $17,795
2015 Ford F-150 For Sale
179 Great Deals out of 10,339 listings starting at $18,814
2014 Ford F-150 For Sale
345 Great Deals out of 9,507 listings starting at $12,988
2013 Ford F-150 For Sale
518 Great Deals out of 13,520 listings starting at $8,977