Vibration when turning on accessarys

20

Asked by Jul 24, 2013 at 12:21 PM about the 1997 Toyota Corolla DX

Question type: Maintenance & Repair

Replace all motor mounts ...all good except when
turning on acc.....fan

6 Answers

6,755

When the A/C is on? Compressor may be getting weak and starting to drag.

1 of 1 people found this helpful.
20

Good answer! Can I check that by taking the belt off and seeing if it spins freely, or is there a better way?..should it have some drag? .

6,755

the pulley will free spin until the clutch cycles when it cycles is when your getting the drag. Should be no drag on the pulley, essentially the a/c compressor is a pump and all pumps need adequate lubrication to maintain there health

1 of 1 people found this helpful.
6,755

does your compressor rattle, knock, or chirp? Some 4 cylinders are prone to sufficient power loss when the compressor is on regardless.

1 of 1 people found this helpful.
20

No, doesn't make any noise, idle kicks down a little due to running it..MAF sensor? No loss of power when driving, it vibrates in the steering wheel when I put it in gear, that is why I replaced all 4 mounts its a lot better, zero vib when in neuteral , and when really warmed up normal vib in gear

20

It also does it when turning on heater..so more of a fan draw?

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