Engine idels to fast after replacing head gasket.

25

Asked by Oct 22, 2007 at 06:45 PM about the 1992 Ford F-150 S LB

Question type: Maintenance & Repair

After replacing the head gasket in my 1992 F150 3.9L 6 cylinder, the first time I started it the engine raced like it was at full throttle and the temperature gage does not show temperature. I can't time it or determine what happened to the temperature gage. Any help would be appreciated.

3 Answers

did you get all the vacume hoses back on and in correct order,as for temp did you plug wire back in for temp guage.

42,515

Yes, sounds like a vacuum problem, and the temp gauge may just be a disconnected wire.

1,235

The computer depends on the temp sensor to control fuel and idle . There are 2 sensors on the vehicle for sure , one for the dash gauge and one for the computer.....make sure they are plugged in and connections are not corroded/ rusty/ green !! Vacume leaks , and or improper vac hose connections will cause the engine to race . Low coolant level will affect idle speeds too , make sure you get in as much coolant as possable and bleed out all air locks in system. Make sure you don't have the throttle stuck open , or the cables binding as they will hold open the throttle plate and cause the engine to race too !!

Your Answer

Add photo

Related Questions

  • price to repair a blown head gasket 3 answers

    Blown head gasket water on oil dipstick will not crank up

    1996 Ford F-150 XL LB

    -

    Maintenance & Repair

  • My f150 will not start. It makes a loud fast clicking 2 answers

    It almost sounds like a buzz. I have changed the starter and the alternator that autozone checked and said was bad. I charged the battery over night, and the charger says it is charged. Same thing sti...

    2003 Ford F-150

    -

    Maintenance & Repair

  • 2003 Ford F-150 blown head gasket 3 answers

    How do you fix a blown head gasket for 2003 Ford F-150? Is it expensive?

    2003 Ford F-150 Lariat Extended Cab 4WD LB

    -

    Maintenance & Repair

  • oil pan gasket replacement 1 answer

    How difficult to replace leaking oil pan gasket on a ford f150 4 wheel drive with 351 engine in the truck? Does the engine need to be jacked up to get the pan out?

    1995 Ford F-150 XL Extended Cab LB

    -

    Maintenance & Repair

  • head gasket 4 answers

    i have the v8 6.0l powerstroke (powerbroke) engine and im learning that there is a major problem with the head gaskets blowing i would like to do some preventitive maintance and change those out befor...

    2004 Ford F-350 Super Duty XL 4WD Crew Cab SB

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 210,526 nationwide F-150 listings starting at $1,499.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,660
#2 dandyoun
dandyoun
Reputation 4,300
#3 tennisshoes
tennisshoes
Reputation 2,680
View All

Related Models For Sale

Used GMC Sierra 1500
854 Great Deals out of 66,786 listings starting at $1,995
Used Ford Mustang
378 Great Deals out of 47,165 listings starting at $1,999
Used Ford F-250
470 listings starting at $3,975
Used Ford Explorer
815 Great Deals out of 75,234 listings starting at $750
Used Ford Ranger
193 Great Deals out of 6,053 listings starting at $1,299
Used Jeep Wrangler
282 Great Deals out of 18,785 listings starting at $2,995

Used Cars For Sale

2017 Ford F-150 For Sale
15 Great Deals out of 125,401 listings starting at $18,490
2016 Ford F-150 For Sale
143 Great Deals out of 22,929 listings starting at $18,800
2015 Ford F-150 For Sale
187 Great Deals out of 7,531 listings starting at $10,999
2014 Ford F-150 For Sale
371 Great Deals out of 12,489 listings starting at $7,995