Alt fuse keeps blowing and wont stay idled if i dont keep on the gas

Asked by Apr 17, 2019 at 03:34 AM about the 2002 Toyota Camry

Question type: Maintenance & Repair

We've had 3 alt fuses blow in 2 weeks and
when we get it going u cant let it idle down
or it dies gotta throw it in park turn the key
off n back on i have a 2002 Toyota Camry
we've check wires at alt for voltage with a
meter n i think they all put out where
theyre supposed to also tooke out n had
alt tested passed 3 times in a row n just
bought a brand new battery

1 Answer

64,175

Fuses are blowing because the alternator is defective and overcharging..... The idle problem is most likely a dirty idle air control valve or defective cold-start injector sticking at startup, and opening up using the accelerator makes up for this. This also affects how the engine behaves when coming to a stop. This could also involve the throttle position sensor and/or the fuel pressure regulator. You need a mechanic to diagnose and fix this.

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