1986 Ranger, 4 cyl, auto, 46k miles. Runs fine when it is cool, but when it is hot outside it misses (acts like it's not getting fuel) and then will quit running. After it sits for a while it will start and run fine again. Have replaced the plugs, wires, fuel pump and ICM. Could this be vapor lock?

25

Asked by Sep 13, 2007 at 09:19 AM about the 1986 Ford Ranger

Question type: Maintenance & Repair

3 Answers

44,245

Did you replace the fuel filter? And is the vehicle one of the carbureted or fuel-injected ones? If so you could have a carburetor issue. It sounds as though something is going amiss when it is heated up. You replaced the ICM, are you referring to the coil, or the actual engine module? How about the distributor cap and rotor button? You may also have an issue with one of the sensors. 1986 Ford Vehicles used an EEC-IV system which was pre-OBD-II. You will need a code scanner that can scan Ford EEC-IV vehicles to pull engine-related codes on this vehicle.

I had a similar problem, check your vacum booster pump. If there is a hissing while you are driving, that gets louder when you stop, odds are it a vacum booster pump.

905

if it is carburated make sure the heat riser is closing when it gets hot. they seize up a lot on old shitty fords. lol. or the oxygen sensor is bad, the oxygen sensor only affects the engines control systems once its warmed up. and make sure the ECT sensor is working (Engine Coolant Temperature) and connected

Your Answer

Ranger

Looking for a Used Ranger in your area?

CarGurus has 5,524 nationwide Ranger listings starting at $1,000.

ZIP:

Ford Ranger Experts

  • #1
    tennisshoes
    Reputation
    1,320
  • #2
    F_O_R
    Reputation
    830
  • #3
    Tracy Hooks
    Reputation
    820
View All

Related Models For Sale

Used Ford F-150
2,122 Great Deals out of 181,536 listings starting at $1,000
Used Chevrolet S-10
8 Great Deals out of 1,275 listings starting at $1,800
Used Dodge Dakota
124 Great Deals out of 3,642 listings starting at $1,650
Used Jeep Wrangler
273 Great Deals out of 15,725 listings starting at $2,997
Used Ford Mustang
743 Great Deals out of 42,181 listings starting at $1,300

Used Cars For Sale

2011 Ford Ranger For Sale
32 Great Deals out of 798 listings starting at $4,900
2010 Ford Ranger For Sale
20 Great Deals out of 493 listings starting at $4,000
2009 Ford Ranger For Sale
19 Great Deals out of 356 listings starting at $4,290
2008 Ford Ranger For Sale
24 Great Deals out of 410 listings starting at $2,999
2007 Ford Ranger For Sale
15 Great Deals out of 290 listings starting at $1,900

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.