why is F150 surging when heater is on

Asked by Mar 10, 2016 at 04:26 PM about the 1995 Ford F-150 XLT SB

Question type: Maintenance & Repair

Idles up and down when heater is on.

1 Answer

15,420

YOu will have to find a diagram of the idle engine control systems. I've seen some Fords have the engine temp sensor send a signal to the PCM, which in turn, will attempt to either bring the engine up to temp or cool it down via engine speed.

Your Answer

Add photo

Related Questions

  • My 2010 F150 XLT heater blows out dash vents only. 2 answers

    Heater and AC blow out dash vent not to floor or windshield. I don't think it's the blend actuator since the heat and AC work fine. What works the flow of air?

    Ford F-150

    -

    Maintenance & Repair

  • Why wont my 2000 F150 start? 4 answers

    My truck has been sitting for about a month and i was trying to start it today to get it fixed (had an exhaust leak and lifter tic) but it only cranked and did not start. But after a while of pum...

    2000 Ford F-150

    -

    Maintenance & Repair

  • 2000 Ford F150 heater/defrost 1 answer

    on my Ford 150 with 4.2L V6, when it is at operationg temp, if you turn on the heater/defrost it will blow hot air for about 10 seconds then go back to cold. any ideas on this? i'm thinking maybe a ac...

    2000 Ford F-150 XL SB

    -

    Maintenance & Repair

  • Heater Core 302 Fuel Inj. 1 answer

    How do I find out the proper way to replace my trucks Heater Core? 89 F150 Fuel Injected 2 wheel drive single exhaust. Respond to Corrie. email heavenz_soldier_enterprize@liv... I bought the part new ...

    1989 Ford F-150

    -

    Maintenance & Repair

  • F150 4 answers

    My 2010 f150 truck won't start in the mornings but will start after the weathers warms up. I have replaced the Battery to no success. I also took my truck to Auto Zone they tested the alternator a...

    2010 Ford F-150 XLT SuperCrew 4WD

    -

    General

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,300
#2 dandyoun
dandyoun
Reputation 3,980
#3 tennisshoes
tennisshoes
Reputation 2,400
View All

Related Models For Sale

Used GMC Sierra 1500
1,188 Great Deals out of 58,901 listings starting at $2,499
Used Dodge Ram 1500
533 Great Deals out of 13,007 listings starting at $1,200
Used Toyota Tacoma
773 Great Deals out of 34,326 listings starting at $2,988
Used Ford F-250
569 listings starting at $1,977
Used Ford Mustang
715 Great Deals out of 39,269 listings starting at $1,995
Used Ford Explorer
1,478 Great Deals out of 74,562 listings starting at $985
Used Chevrolet Tahoe
1,072 Great Deals out of 31,899 listings starting at $1,700
Used Ford Ranger
219 Great Deals out of 7,085 listings starting at $1,500

Used Cars For Sale

2017 Ford F-150 For Sale
44,201 listings starting at $17,605
2016 Ford F-150 For Sale
213 Great Deals out of 93,762 listings starting at $17,937
2015 Ford F-150 For Sale
272 Great Deals out of 8,386 listings starting at $18,891
2014 Ford F-150 For Sale
584 Great Deals out of 11,521 listings starting at $9,600
2013 Ford F-150 For Sale
813 Great Deals out of 14,814 listings starting at $7,527