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

47,675

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.

935

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 4,571 nationwide Ranger listings starting at $1,895.

ZIP:

Ford Ranger Experts

  • #1
    tennisshoes
    Reputation
    1,590
  • #2
    F_O_R
    Reputation
    1,060
  • #3
    Bob Beaman
    Reputation
    1,020
View All

Related Models For Sale

Used Ford F-150
2,344 Great Deals out of 215,477 listings starting at $1,300
Used Chevrolet S-10
10 Great Deals out of 957 listings starting at $950
Used Dodge Dakota
68 Great Deals out of 3,085 listings starting at $1,800
Used Jeep Wrangler
250 Great Deals out of 19,077 listings starting at $2,500
Used Ford Mustang
270 Great Deals out of 37,082 listings starting at $2,150

Used Cars For Sale

2011 Ford Ranger For Sale
28 Great Deals out of 675 listings starting at $3,488
2010 Ford Ranger For Sale
15 Great Deals out of 374 listings starting at $4,500
2009 Ford Ranger For Sale
4 Great Deals out of 247 listings starting at $3,950
2008 Ford Ranger For Sale
18 Great Deals out of 352 listings starting at $2,095

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.