1996 f 150 w/5.0 put in new coil only last about a day and goes out. What do I check

Asked by Mark Apr 18, 2014 at 12:59 AM about the 1996 Ford F-150 XL LB

Question type: Maintenance & Repair

I have put 3 coils on this truck same thing starts runs good for about a day then goes out
has new relay and new E.C.M

4 Answers

58,505

The module on the side of the distributor directly controls the coil. In your system (EEC-IV), the TFI module can fail and keep power to the coil constantly, burning it up.

5,155

the ignition control module has a short in it. trust me replace it then you wont have no issues anymore

58,505

That's what I said. There's a Schmidt Switch and a Darlington Amplifier in the module that runs a near 99% dwell on the coil anyway. It overheats the module and the coil. Ford didn't address this concern until the early 90's when they came out with a black TFI module that had an 8-bit microprocessor in it to keep coil saturation to less than 10 milliseconds. Just a little more than enough to saturate and fire the coil.

1 people found this helpful.
Best Answer Mark helpful

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 15,725 nationwide F-150 listings starting at $1,712.

Postal Code:

CarGurus Experts

  • #1
    OJ
    Reputation
    42,470
  • #2
    Gene Arnett
    Reputation
    16,040
  • #3
    Rowefast
    Reputation
    15,840
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
128 Great Deals out of 6,854 listings starting at $3,975
Used Toyota Tacoma
54 Great Deals out of 1,033 listings starting at $8,708
Used Dodge RAM 1500
4 Great Deals out of 80 listings starting at $4,000
Used Ford F-250
6 listings
Used Ford Ranger
15 Great Deals out of 1,439 listings starting at $2,888
Used Ford Mustang
49 Great Deals out of 1,268 listings starting at $4,995
Used Ford Explorer
81 Great Deals out of 2,024 listings starting at $2,999

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.