1991 V6 Crank Pulley "Wobbly" at Idle

[Variety=Spice]

I picked up a new project yesterday, a 1991 Camry Station Wagon V6. It has a myriad of problems that need attention, but one of the less straight forward ones is the wobbly crank pulley (the pulley that drives the accessory/serpentine belt.)

At idle I can see the pulley wobbling; the pulleys on the alternator and water pump, etc are not. When I increase the RPMs to 1500 or 2000 the pulley seems to stabilize and appears to run smoothly.

I'd think that if the pulley had been bent during a timing belt change then the problem would not go away at higher RPMs.

Any ideas?

[toyomoho]

The pulley may be a two-piece design. Someone may have damaged it when they pulled it off at the last timing belt change. This can happened if a clamp type puller is used instead of a bolt on. Best find a replacement, try a junkyard. It could just look like the problem goes away at higher RPM, but is still there.

[marc780]

You need to change the pulley. The crankshaft is massively strong and it will break before it will bend! So it's a safe bet the problem is the pulley. Easy to pull one at a junkyard.