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.

40,335

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

1,175

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 207,570 nationwide F-150 listings starting at $1,273.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,300
#2 dandyoun
dandyoun
Reputation 3,970
#3 tennisshoes
tennisshoes
Reputation 2,400
View All

Related Models For Sale

Used GMC Sierra 1500
1,194 Great Deals out of 58,880 listings starting at $2,495
Used Ford F-250
568 listings starting at $1,977
Used Ford Mustang
715 Great Deals out of 39,137 listings starting at $1,000
Used Ford Explorer
1,504 Great Deals out of 74,211 listings starting at $985
Used Ford Ranger
223 Great Deals out of 7,061 listings starting at $1,450

Used Cars For Sale

2017 Ford F-150 For Sale
42,850 listings starting at $17,605
2016 Ford F-150 For Sale
220 Great Deals out of 94,697 listings starting at $17,937
2015 Ford F-150 For Sale
275 Great Deals out of 8,358 listings starting at $18,891
2014 Ford F-150 For Sale
595 Great Deals out of 11,490 listings starting at $9,600
2013 Ford F-150 For Sale
822 Great Deals out of 14,819 listings starting at $7,527