Question about 1988 Ford F 150

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Have a 1988 Ford F-150 4X4 5.8 Windsor with 173000 miles that I am having problems with. Problem #1 - The truck has a really high idle when started it does not go down unless after it has been drving for a while and has been restarted it will sometimes go to a normal idle. When it does go to a normal idle after about 10 minutes of driving the check engine light comes on, but while at a fast idle the light does not come on. Problem #2 - About a month ago the truck started to die after it has been running for about 10 minutes. It will restart and die a few times then be just fine and I can drive all day so long it does not sit for to long. After reading some posts here I have changed the Map Sensor and the TFI module on the distributor but I am now lost. Please help

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  • 2,449 Answers

Check for vacume leaks. Could be the (tps) throttle control sensor.

Posted on Mar 21, 2017


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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: truck starts, dies. truck runs good some days,bad the next

I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!

Posted on Oct 06, 2008

  • 85 Answers

SOURCE: 1990 Ford F-150 flooding very badly

ok change the coolant temp sensor it will make it rich if it is bad good luck.

Posted on Nov 24, 2008

  • 22326 Answers

SOURCE: 1985 Dodge W-150 4x4 5.9

got to be ignition module ,check for feed to it and if you have a feed then check the earths and if ok just change it ,these thing can just stop when you turn engine off ,never seen one go whilst being driven .

Posted on Dec 14, 2008

  • 3 Answers

SOURCE: weak spark + 1988 ford bronco

i have an 89 ford bronco if i drive it to work get home shut it off try to start it again it wont start sounds like the battery is dead but have replaced the battery what could it be

Posted on Jan 03, 2009

  • 3 Answers

SOURCE: Has anyone had any success relocating TFI Module

Belt sand the wall of a deepwell 7/32 socket til it fits in the holes of the module, you dont need a special driver. next look at and it discusses this relocation solution. It is something I just found at 9 p.m. and has good direction and pics to boot. I have a 86 Bronco 2 with a 2.9 litre and I WILL fix it. good luck!!!!!!!!!! Keep in touch at My name is Bryan

Posted on Jul 17, 2009

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