1993 Ford F-150 Starter and Alternator issues

Asked by GuruFR24Y May 01, 2020 at 11:59 PM about the 1993 Ford F-150 XL Stepside SB

Question type: Maintenance & Repair

My F-150 has a 4.9L straight 6 and I am having an alternator charging issue.
I replaced the OEM top plug on the alternator with direct connections and the
alternator started charging. Once it started charging the starter would remain
engaged and overheat. When I disconnect the power signal wire from
alternator the starter disengages but alternator will not charge battery.
I've gone through 2 alternators, 3 starters and 4 starter solenoids. I'm at my
wits end here, can someone tell me why this is happening?

3 Answers

73,330

Question, just so I am clear. Once you make the final connection of all related parts, the starter begins to spin (engaged) and remains that way, even with the key not turned to the start position? Check the starter solenoid.

Yes. Starter stays engaged. I replaced starter 3 times and the last one I got from parts store was tested Defoe I took it home.

73,330

Then power is being passed from the battery, to the starter at all times. If you have a fender mounted starter solenoid check using a test light or multi-meter if power is being supplied to the low voltage end from the ignition. It shouldn't be. Check the net for a video if you are uncertain how to check. If the solenoid is mounted on the starter itself, same procedure.

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 13,471 nationwide F-150 listings starting at $4,888.

Postal Code:

CarGurus Experts

  • #1
    OJ
    Reputation
    41,840
  • #2
    Gene Arnett
    Reputation
    15,990
  • #3
    Rowefast
    Reputation
    15,480
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
127 Great Deals out of 7,869 listings starting at $5,500
Used Dodge RAM 1500
3 Great Deals out of 82 listings starting at $2,500
Used Ford F-250
6 listings
Used Ford Mustang
33 Great Deals out of 1,565 listings starting at $5,977
Used Ford Ranger
23 Great Deals out of 701 listings starting at $8,999
Used Ford Explorer
59 Great Deals out of 1,907 listings starting at $6,990
Used Jeep Wrangler
135 Great Deals out of 5,912 listings starting at $6,500
Used Toyota 4Runner
20 Great Deals out of 536 listings starting at $7,770

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.