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Discussion Starter · #4 ·
start the car then disconnect the negative side of the battery, if the car runs, the alternator is fine.
ive heard that can damage the ecu...

im planning on doing the t-belt service soon, and if i need to ill replace the alt, but id just like to get an idea until then.

car runs fine, no hard starts, nothing really wrong, just "noticed" this lol
 

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ive heard that can damage the ecu...

im planning on doing the t-belt service soon, and if i need to ill replace the alt, but id just like to get an idea until then.

car runs fine, no hard starts, nothing really wrong, just "noticed" this lol
Only on newer vehicles. Our corollas aren't effected by it.

Do that test if you can't get your hands on a volt meter.
 

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Just play along....
corolla
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start the car then disconnect the negative side of the battery, if the car runs, the alternator is fine.
Lets settle this once and for all....

NEVER EVER disconnect the battery on a running car that has ANY electronic parts!

You may get away with it, but its more probable you may blow something up with the voltage spike.

If you cant spend $3 on a voltmeter you shouldnt be working on your car anyway.

Got it?

Respectfully.

-SP
 
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