How do i replace the alternator in my 22r '86 toyota, or should i change the belt first?

this truck sat for over two years. the oil was tar and all the fluids were sap! i replaced the iol and flushed, plugs cap and rotorfuel filter and air filter, battery connecttions and battery. i am losing power and getting really rough running until the engine has warmed up. help
How do i replace the alternator in my 22r '86 toyota, or should i change the belt first?
Before spending the money on a new alternator, take it to a local auto parts store like AutoZone, they will test your alternator for free.
How do i replace the alternator in my 22r '86 toyota, or should i change the belt first?
You really need to buy the repair manual.
I'd replace the belt first, then in a couple of days, I'd replace the alternator with a rebuilt one if the battery isnt charging.
Is the alternator light on? Check the voltage at the battery with the engine running. I doubt it is the alternator. Did you flush the fuel tank?
Run fuel injector cleaner at about 2x the amount recommended.

If fuel is low ( 1/4 )leave it and add cleaner, or bring it 1/4 to 1/2 tank and add cleaner.

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