AUII XR6 Harmonic Balancer

[cm29579]

I have had a problem since I bought my car, of a slight grumbling/slight virbration noise when the car goes through the early gear progression, at random times. Usually between 1000-2500 rpm off the mark.

Is this is likely to be the harmonic balancer? My best guess is it comes just off to the passenger side of the engine (the noise that is....I have no idea where the harmonic balancer is located).

If it is this, can someone tell me whether that part can actually be inspected first, to see if its faulty, and an approximate fix cost. I saw a new AU one on ebay for $99, and Id assume 30-60 mins labour.

[RG]

Moved here for greater coverage.

[EvilChief]

harmonic balancer front of engine ...

ur description is a little cryptic in terms of symptoms. harmonic balancers generally if completely screwed a really loud clunking noise, however wearing balancers increase vibration as rpm increases.

if its c lunking noise, particularly during gear changes id start looking at engine mounts

[cm29579]

Its a light vibration that's only audible, cant feel it, its gone once speed is over 30km/h, and it also happens when idling at times. It only happens in gear, you can put it in park and rev it all you want and get no noise. Noise has been there for 9 months I've owned it, only lately has become more often, and when idling.

[InfernoSR]

I actually understand what you mean, and it wasnt fixed with a replacement harmonic balance unfortunatly... Mine has been there since i've owned the vehicle... so i'm stumped aswell...

[bodes-sh]

what happens if you load it up in gear? ie, hold the brake on and rev the engine. any better or worse with the aircon on?

[atec77]

Originally Posted by cm29579

I have had a problem since I bought my car, of a slight grumbling/slight virbration noise when the car goes through the early gear progression, at random times. Usually between 1000-2500 rpm off the mark.

Is this is likely to be the harmonic balancer? My best guess is it comes just off to the passenger side of the engine (the noise that is....I have no idea where the harmonic balancer is located).

If it is this, can someone tell me whether that part can actually be inspected first, to see if its faulty, and an approximate fix cost. I saw a new AU one on ebay for $99, and Id assume 30-60 mins labour.

Clip your timing light on and watch the marks when you rev it up a little and down again , if it's almost ready to die the timing will fluctuate all over .

[cm29579]

Originally Posted by bodes-sh

what happens if you load it up in gear? ie, hold the brake on and rev the engine. any better or worse with the aircon on?

Yeah, it does still rattle/grumble/vibrate when in Drive, foot on brake, and applying some throttle. It doesnt need to be in motion to make the noise, hence it happening when at traffic lights.

[InfernoSR]

Originally Posted by cm29579

Yeah, it does still rattle/grumble/vibrate when in Drive, foot on brake, and applying some throttle. It doesnt need to be in motion to make the noise, hence it happening when at traffic lights.

Might sound like a silly question here... but does it kinda make a sound like an old diesel Landcruiser?

[cm29579]

Nah, nowhere near that loud. If the stereo is on even moderately, it can't be heard. Its probably about 1/5 the loudness of when a cat has broken up and the pieces inside are rattling around.