i have replaced the alt. and bat. on my 1999 ford taurus.wheni hook the wiring up to the new alt. the housing on the alt. and the pos.cable on bat. are getting hot to touch.when i shut the motor off and leave it over nite the bat.goes dead.why

Asked by Jun 09, 2015 at 01:06 PM about the 1999 Ford Taurus SE

Question type: Maintenance & Repair

1 Answer


Sounds like a bad diode in the alternator. Try this: get a test light and unhook a battery cable, put the test in- between the cable end and battery post, if the light turns on then you have a draw large enough to kill an battery overnight, next electrically disconnect the alternator, if the light goes out then there is your problem. If the light does not go out then you will have to start pulling the fuses one at a time noting the location until the light goes out, when it does find out what components are on that circuit and repair or replace as needed, then start putting the fuses back in and reconnect the alternator.

Your Answer

Ford Taurus Experts

  • #1
    Tom Demyan
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
375 Great Deals out of 27,000 listings starting at $1,000
Used Ford Explorer
832 Great Deals out of 64,080 listings starting at $2,000
Used Ford F-150
2,524 Great Deals out of 219,810 listings starting at $1,222
Used Ford Mustang
288 Great Deals out of 38,306 listings starting at $1,995
Used Honda Accord
529 Great Deals out of 93,656 listings starting at $1,495
Used Chevrolet Malibu
604 Great Deals out of 48,316 listings starting at $1,800
Used Toyota Camry
787 Great Deals out of 71,592 listings starting at $175
Used Ford Focus
406 Great Deals out of 70,943 listings starting at $999
Used Nissan Maxima
235 Great Deals out of 17,856 listings starting at $1,995

Used Cars For Sale

2017 Ford Taurus SE For Sale
99 listings starting at $16,995
2016 Ford Taurus SE For Sale
69 listings starting at $12,500
2015 Ford Taurus SE For Sale
12 Great Deals out of 298 listings starting at $9,299
2014 Ford Taurus SE For Sale
99 listings starting at $7,450

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.