Q: How can I tell what amp my alternator is?

asked by on

I need to buy a new alternator tomrrow because my bearings are going bad do to it being ran rough until i gave it a tune-up but my pulley on the alternator is going bad. I need to buy the whole thing because i am not trying to rebuild an alternator for the pulley even though the pulley itself is good. How can i determine its amperage to know which one to buy.

My car has 357000 miles.
My car has an automatic transmission.

Hey there. You should have a stamp on the alternator with a part number and amperage. The part number that starts with F3UZ is the 130 amp, and the F1TZ is the 95 amp. You can use either one. If you need help with sourcing or installing the part, a certified technician from YourMechanic can come to your location to replace the alternator for you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. How can I tell what amp my alternator is?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Sometimes my car will not shift into overdrive and then sometimes it does, any idea what could be causing this?

This symptom is the TCC (Torque Converter Clutch) is slipping in and out while driving. To check this condition, scan the computer to see whether the TCC action is being commanded by the computer. There could be a problem with...

Q: Vibration when turning left at highway speeds

Hi there. Vehicle vibration when driving above 55 mph is commonly attributed to tire / wheel balance. However, the other symptoms you're describing lead me to believe that you might have damage to wheel bearings (as you indicated you have...

Q: Q: my battery light stays on

You need to check to make sure the large power wire to the alternator is getting power. If it is not then you may have to check the wire from alternator to the battery fuse box for burned out wires...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...