Confuzzled!!! Truck dies randomly then wont start... spent 1500 trying to fix.

Asked by Dec 23, 2015 at 10:19 AM about the 2002 Ford Explorer Sport 4WD

Question type: Maintenance & Repair

Truck drives fine one day, then stalls and won't restart the next day. We
have replaced fuel pump (3x), fuel relay, vaper mang. valve, the SPORD
sensor, O2, sensons, crankshaft sensor, battery, checked for ground,
checked anti-theft (no difference) and multiple other things... any ideas?
When cranking- the fuel pump is not getting the signal everytime, but then
randomly it will start and run for hours... HELP!!!

17 Answers

76,345

Sound like it may be electrical, when it warms up, Possible coil pick-up (pole piece) or the electronic control module. (ECM)

1 of 1 people found this helpful.

Seems like the truck is protecting itself by shutting off gas flow...? No recent collisions...

20,430

Not saying this is your problem but had the same problem turned out had to replace the harness connector to fuel pump was making a bad connection.

1 of 1 people found this helpful.
76,345

I know you replaced fuel pump & relay but maybe do some checks on fuel pressure, possible fuel regulator or leaking injectors. Verify that there is no problems with the fuel system. The ecm has similar symptoms.

1 of 1 people found this helpful.
76,345

That is a good possibility there firebird...

1 of 1 people found this helpful.

Cant find ECM in Haynes Repair Manuel... another name?

6,815

Mornin all. When the truck wont run you say that its shutting off fuel delivery, does it also not have spark? Is the engine light doing its prove out (on when key cycled/ off when cranking) when it wont start? If it doesn't come on at all then there is something shutting the pcm down. Have you also checked or swapped the pcm relay with another one to rule it out?

Best Answer Mark helpful

Harness has been plugged in repeatedly... no shorts seems to make themselves evident...

76,345

Sorry, Ignition Control Module, Has to do with the delivery of the spark to the plugs...took the place of points...

2 of 2 people found this helpful.
6,815

here is a pic

1 of 1 people found this helpful.
76,345

These can be tested at Auto-Zone...

Guy- yes it has spark after it dies... have replaced the relay...

76,345

Well looks like that should be enough to keep you busy...

Thanks.... will checkin later...

20,430

The thing about a harness connector you can not see inside of it to see if it is not making connection or not and plugging it in and out repeatedly is not going to let you know if it is making connection or not if connection in harness is bad.

1 of 1 people found this helpful.
20,430

And also when I had the same problem plugged it in and out repeatedly did not help until I replaced the harness connector.

1 of 1 people found this helpful.
21,130

If the problem is electronic, as was the case with my 2003, best you bring it to a shop with an electronic analyzer. Took the mechanic all of five minutes to plug the analyzer in, try to start the car, and say the PCM was bad. I was told I could not replace the PCM myself as it has to be initialized and programmed once installed. My repair was between 3 and 400 bucks. Autozone sells the part for around 200.

Your Answer

Explorer

Looking for a Used Explorer in your area?

CarGurus has 70,145 nationwide Explorer listings starting at $1,000.

ZIP:

Ford Explorer Experts

  • #1
    OJ
    Reputation
    11,320
  • #2
    Tom Demyan
    Reputation
    4,460
  • #3
    tennisshoes
    Reputation
    2,600
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,085 Great Deals out of 72,844 listings starting at $1,195
Used Ford Expedition
396 Great Deals out of 17,467 listings starting at $1,500
Used Ford F-150
3,297 Great Deals out of 224,483 listings starting at $1,200
Used Chevrolet Tahoe
829 Great Deals out of 42,143 listings starting at $1,987
Used Dodge Durango
391 Great Deals out of 24,349 listings starting at $1,500
Used Toyota Highlander
611 Great Deals out of 38,160 listings starting at $2,500
Used Ford Escape
1,300 Great Deals out of 104,989 listings starting at $895
Used Toyota 4Runner
349 Great Deals out of 27,129 listings starting at $1,800
Used Honda Pilot
755 Great Deals out of 41,334 listings starting at $998
Used GMC Yukon
615 Great Deals out of 20,555 listings starting at $2,500
Used Nissan Pathfinder
530 Great Deals out of 25,300 listings starting at $2,388
Used Ford Explorer Sport Trac
58 Great Deals out of 1,811 listings starting at $2,395

Used Cars For Sale

2016 Ford Explorer Sport 4WD For Sale
28 Great Deals out of 613 listings starting at $24,840
2015 Ford Explorer Sport 4WD For Sale
71 Great Deals out of 1,128 listings starting at $21,995
2014 Ford Explorer Sport 4WD For Sale
25 Great Deals out of 500 listings starting at $19,414

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.