no heat in winter and over heats while driving slow in summer

Asked by Nov 21, 2016 at 07:47 PM about the 1991 Ford Ranger

Question type: Maintenance & Repair

in the winter time truck only blows relatively cold air.  if I drive it for 10 mins will start to kick out enough heat to defrost windshield, but not enough to warm truck.  in summer  time truck will overheat if driving slow or in town.  temperature gauge goes go up and down all year long.  it never did this is past, always remained steady

1 Answer

76,625

I would replace the thermostat and hoses and flush the radiator and install new coolant. You also need to purge the air out of the system by parking the truck facing up hill and letting it idle with the radiator cap off and the heater on. Top off the coolant after it fully warms up. Don't take the cap off if the engine is hot! Also check the fan belt and cooling fan.

3 of 3 people found this helpful.
Best Answer Mark helpful

Your Answer

Ford Ranger Experts

  • #1
    tennisshoes
    Reputation
    1,370
  • #2
    Tracy Hooks
    Reputation
    840
  • #3
    F_O_R
    Reputation
    830
View All

Related Models For Sale

Used Ford F-150
463 Great Deals out of 10,188 listings starting at $1,400
Used Chevrolet S-10
11 listings starting at $5,495
Used Dodge Dakota
7 Great Deals out of 149 listings starting at $3,300
Used Jeep Wrangler
111 Great Deals out of 1,664 listings starting at $3,995
Used Ford Mustang
8 Great Deals out of 1,150 listings starting at $2,999
Used GMC Sierra 1500
255 Great Deals out of 10,826 listings starting at $2,995

Used Cars For Sale

2011 Ford Ranger For Sale
32 Great Deals out of 78 listings starting at $3,900
2010 Ford Ranger For Sale
12 Great Deals out of 54 listings starting at $4,994
2009 Ford Ranger For Sale
6 Great Deals out of 36 listings starting at $2,999
2008 Ford Ranger For Sale
14 Great Deals out of 92 listings starting at $4,475
2007 Ford Ranger For Sale
4 Great Deals out of 34 listings starting at $4,387

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.