2002 Explorer won't start after engine replacement

Asked by GuruLXLGL Apr 02, 2019 at 12:26 PM about the 2002 Ford Explorer Limited 4WD

Question type: Maintenance & Repair

Just replaced the engine in my 2002
explorer. Everything is hooked up and the
reader doesn't detect any faults. The car
turns over but there's no spark. I'm told
this could be a security issue. I don't have
a key fob or a spare key. Any suggestions?

1 Answer

27,460

Make sure battery has a full charge and connections all good. Make sure grounds are good, engine ground--chassis ground, what ever. My info for your security system, one of the things it will do is disable your starter motor. So if the starter motor will crank will the engine? The computer and engine, are they compatible? One way to tell if computer is awake, turn on the key, check any sensor that uses a ref voltage, if ref voltage is present, so far so good. Are you missing anything besides spark? Engine cranking you have proper fuel pressure and fuel injector pulse? As far as spark, did you check primary voltage to coil, white wire with lite blue tracer, goes hot with key on and fuse protected. Use a test light and check voltage on that wire, key on.

Your Answer:

CarGurus Experts

  • #1
    OJ
    Reputation
    31,060
  • #2
    TransAm77
    Reputation
    7,890
  • #3
    Gene Arnett
    Reputation
    7,340
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
299 Great Deals out of 15,725 listings starting at $1,712
Used Ford Expedition
30 Great Deals out of 812 listings starting at $7,888
Used Chevrolet Tahoe
18 Great Deals out of 745 listings starting at $5,995
Used Jeep Grand Cherokee
113 Great Deals out of 3,318 listings starting at $4,995
Used Toyota Highlander
31 Great Deals out of 718 listings starting at $2,495
Used Dodge Durango
38 Great Deals out of 2,318 listings starting at $7,995
Used Honda Pilot
47 Great Deals out of 1,226 listings starting at $2,133
Used Toyota 4Runner
13 Great Deals out of 337 listings starting at $9,900
Used Ford Escape
121 Great Deals out of 4,529 listings starting at $2,995
Used Chevrolet Silverado 1500
171 Great Deals out of 5,940 listings starting at $3,995
Used GMC Yukon
26 Great Deals out of 754 listings starting at $4,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.