New alternate and battery still killing battery not holding charge

Asked by Jun 03, 2017 at 04:08 PM about the 1993 Ford Thunderbird LX

Question type: Maintenance & Repair

2 Answers

1993 ford thunderbird 5.0 ho has msd new battery and alternate still drain the battery then tale t cable it killed the car

245

Get a clamp meter that is capable of measuring 25 DC amps. With all accessories turned off, and doors and trunk closed, place the clamp meter caliper around the RED battery cable. If the meter measures over 400 milliamps (.4 amps), then there is a "parasitic" load which is draining the battery. Let's say you measure 3.5 amps on the meter. Start pulling fuses until the meter reads .4 amps (or less). You just isolated the short circuit! Look at the fuse panel legend to see whats causing the unwanted load (drain).

Your Answer

Ford Thunderbird Experts

  • #1
    Larry Sturgis
    Reputation
    1,730
  • #2
    Tom Demyan
    Reputation
    1,680
  • #3
    tennisshoes
    Reputation
    1,300
View All

Related Models For Sale

Used Chevrolet Corvette
124 Great Deals out of 16,134 listings starting at $3,995
Used Ford Mustang
344 Great Deals out of 42,034 listings starting at $1,488
Used Chevrolet Camaro
378 Great Deals out of 31,274 listings starting at $3,495
Used Mercedes-Benz SL-Class
54 Great Deals out of 3,362 listings starting at $3,995
Used Ford F-150
3,017 Great Deals out of 230,443 listings starting at $1,300
Used Porsche 911
129 Great Deals out of 5,258 listings starting at $10,099
Used Pontiac Firebird
7 Great Deals out of 693 listings starting at $2,850
Used Jeep Wrangler
366 Great Deals out of 20,464 listings starting at $2,500
Used Dodge Viper
213 listings starting at $30,195

Used Cars For Sale

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.