1994 mustang gt electrical problems

Asked by Jan 18, 2008 at 11:45 AM about the 1994 Ford Mustang

Question type: Maintenance & Repair

i rebuilt the motor and its runs good but the alternator doesnt charge the battery, i had the alternator checked out and its good. can it be the voltage regulator? i need help and i dont want to pay 92 dollars an hour to get the problem looked at. any suggestions?

4 Answers

7,415

If the alt checked out I can't see how it is the voltage regulator. You said you rebuilt the engine. This means you took it out. Have you checked ALL the grounds?

im pretty sure i have. there is one going from the frame to the motor mount and there is another one from the engine block to the battery and then there is alternator and the stater. should there be more?

1,345

Make sure all engine grounds are attached. Make sure all connections to the alternator are good.( if they look melted/burned , replace them ) Make sure all fuses and fuse links are good. On this style of alternator , the regulator is built into the alternator !! Check to make sure battery connections are good ( not corroded ) I hope this helps out !!

80

Your alternator should have a large wire bolted on, this wire should have battery power all the time.There should be a 3-wire plug and a single wire plug. On the 3-wire plug the white wire with black stripe goes to single wire connector that plugs into alternator. the center wire should be yellow with white stripe,it comes from 20a fuse in engine compartment. The light green wire with red stripe comes from dash light which is powered from #18 20a fuse in instrument panel fuse box. You would have to use a volt meter to check for power or a test light, The light green wire that comes from dash has power with key on, If you use a test light it might be dim. If no power on wires check fuses

1 of 1 people found this helpful.

Your Answer

Mustang

Looking for a Used Mustang in your area?

CarGurus has 41,500 nationwide Mustang listings starting at $1,488.

ZIP:

Ford Mustang Experts

  • #1
    Tom Demyan
    Reputation
    4,900
  • #2
    F_O_R
    Reputation
    1,410
  • #3
    Bob Beaman
    Reputation
    1,390
View All

Related Models For Sale

Used Chevrolet Camaro
358 Great Deals out of 31,468 listings starting at $3,495
Used Chevrolet Corvette
109 Great Deals out of 16,236 listings starting at $3,995
Used Ford Mustang SVT Cobra
4 Great Deals out of 253 listings starting at $4,795
Used Ford F-150
2,943 Great Deals out of 230,829 listings starting at $1,300
Used BMW 3 Series
1,080 Great Deals out of 33,894 listings starting at $1,209
Used Jeep Wrangler
376 Great Deals out of 20,576 listings starting at $2,500
Used BMW M3
25 Great Deals out of 1,816 listings starting at $5,495

Used Cars For Sale

2018 Ford Mustang For Sale
16,592 listings starting at $19,995
2017 Ford Mustang For Sale
83 Great Deals out of 7,888 listings starting at $15,799
2016 Ford Mustang For Sale
47 Great Deals out of 2,492 listings starting at $12,391
2015 Ford Mustang For Sale
28 Great Deals out of 2,376 listings starting at $12,000
2014 Ford Mustang For Sale
36 Great Deals out of 2,151 listings starting at $8,998

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.