Ticking noise after belt replacement - Toyota Nation Forum : Toyota Car and Truck Forums

good_old_geo · 09-05-2010, 05:34 PM

Hi Guys,

Just wanted to ask a few questions. I noticed one day that my ac was not working and so I found that the ac belt was gone. So I replace the ac belt and the alt belt because it looked damaged possibly from hitting the broken belt. I start the car and I noticed a ticking sound which initially was not there when I replaced the belt but became noticable when I took it out a hours later. I noticed that one of the ribs of the alt belt was loose. I tried tightening the belts and it didnt go away. I removed the ac belt and the noise was not there anymore then I noticed that my harmonic balancer looked like it was acting strange. The outer ring would seem to move out as I revved the engine. Then it would come back in when the engine was back to idle. Is this normal?

speedy25 · 09-05-2010, 08:06 PM

Its semi common for outer rings to become unbonded from the rubber. Fix it before it goes clunking off down the road.

-SP

good_old_geo · 09-05-2010, 11:08 PM

just an update. That ticking sound was when I put all the belts in place. I removed the ac belt and then the ticking stopped. I checked the ac pulley and there is very very very light play in the pulley. Its hardly discernible.

I checked other forums and apparently the harmonic balancer on corollas almost never goes bad. Today i checked and the outer ring only comes out when revved very high.

Looks like my ac compressor bearing is shot. Anybody in the forums has rebuilt one?

Steelballz · 09-06-2010, 05:23 PM

if only you'd have posted this up 2 weeks ago, only just threw a corolla AC pump then

good_old_geo · 09-06-2010, 08:12 PM

to recap...I noticed that my ac was not working then I found out that my ac belt broke. Replaced the belts thinking they were just old then my car was making a ticking and humming sound.....take the ac belt off and the noises were gone. Today I pulled out all the belts and lo and behold my crank pulley was f*&^$%#. The outer ring slipped right off the inner ring!!!! I didnt know these could happen!

Lesson learned....broken belts may be a sign of crank pulley failure!