88 ford f150 runabilty issues

Asked by Jan 05, 2017 at 12:46 PM about the 1988 Ford F-150 S Standard Cab SB

Question type: Maintenance & Repair

My truck sat for some time then I had all the wiring
and 4 Injectors replaced..it ran great. I drove it
yesterday and it started idling high then when I
shut it off  it was hard to start  back up and today I
had it running good after it sat over night then after
about 30 min the idle jumped up and as I was
backing down the hill it shut off and smelled real
rich it will crank but only after having to Pat the
accelerator then it shuts right back off and smells
rich.. I'm thinking the O2 sensor or the idle control
valve..
Anyone have a idea what's wrong

1 Answer

124,085

First thing is to get a fuel pressure gauge on it and see what's going on. Could be pressure regulator, Maybe you have vacuum leak(s)? Try putting you finger over the IAC port in the front of the TB while idling - if it continues to idle high, you have a vac leak. If it dies,

Your Answer:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    11,220
  • #2
    dandyoun
    Reputation
    5,020
  • #3
    tennisshoes
    Reputation
    3,950
View All

Related Models For Sale

Used GMC Sierra 1500
652 Great Deals out of 56,442 listings starting at $888
Used Ford Mustang
359 Great Deals out of 38,491 listings starting at $1,995
Used Ford F-250
394 listings starting at $2,495

Used Cars For Sale

2018 Ford F-150 For Sale
109 Great Deals out of 111,948 listings starting at $17,790
2017 Ford F-150 For Sale
127 Great Deals out of 7,144 listings starting at $16,863
2016 Ford F-150 For Sale
257 Great Deals out of 10,043 listings starting at $14,000
2015 Ford F-150 For Sale
258 Great Deals out of 11,726 listings starting at $14,900
2014 Ford F-150 For Sale
340 Great Deals out of 9,369 listings starting at $7,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.