I replaced alternator and battery and light stays on and no charging still. any thoughts?

5

Asked by Jul 15, 2012 at 11:05 AM about the 2000 Ford Taurus SE

Question type: Maintenance & Repair

6 Answers

375

Not well versed in Fords, but i'll try. Belt in good shape? Tensioner working properly(not worn)? Check with your local Ford dealer or service manual to see if it has a seperate voltage regulator. Knew a guy with an older Super Duty who had the same experience. Finally replacing the regulator solved his problem. Sorry, I'm only guessing here.

4 out of 4 people think this is helpful.
375

Also check your battery cables for good connection. You obviously don't want any white / yellowish buildup on the contacts.Check the cables for soundness by manually manipulating them to see if they are broken(corroded) internally. Had that happen to a friend with an older Bronco. Disconnect everything and give it a good cleaning with bbaking soda and water if there are any signs of corrosion. Replace a suspect cable as they are relatively cheap. Look into the voltage reg as well. Ask a trusted parts store or mechanic if they have a way to test it first. What's the "AO"/

2 out of 2 people think this is helpful.
300

I have seen numerous websites that offer only guesses at the problem. The same thing happend to me. After buying an altenator, a battery, having the new battery charged, having an Autozone and Oreillys Autoparts "associate" troubleshoot with the electronic device that checks the battery and the altenator, there was never resolution. I bought a $26 Chilton manual and read the wiring diagram for the charging system. After over $280 in parts, the only thing that needed to be replaced at the beginning was a 175 AMP fuse located on the passenger side of the MAIN fuse box located under the hood. Do not waste your time tracking wires, replacing the altenator, battery, or little fuses. FIRST, check this fuse. It solved the problem.

27 out of 27 people think this is helpful.
510

not getting no power from the alternator to the battery on a 2002 Ford Taurus alternator brand new

23 out of 23 people think this is helpful.
20

I know that 99 Taurus has 2 different size alternators. I had bought one from a junk yard and have had battery drainage problems. Check your vin # and match it to the type of alternator. My car is a U vin.

2 out of 2 people think this is helpful.

Tested alternator testing battery all was good. Took battery cable off one pole and did the hot to and each one the car keek running.

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