Supra Down

Noisyferret · 06-24-2009, 08:06 PM

Yes, exactly the situation. Appears intact, pulled on it and it is tensioned still. Crank the car, all the other belts move, but the cams+timing belt do not. The belt is starting to die though. Idk if it's possible, but MAYBE some teeth got stripped somewhere and they are no longer catching?

mirage83 · 06-24-2009, 08:34 PM

I suppose it's possible that the pulley on the crankshaft is shot, teeth missing (or ridges missing from the belt itself). Could also be that the belt tensioner isn't keeping sufficient tension on the belt for it to turn the cams. Those are my best guesses for the moment in any case.

Noisyferret · 06-24-2009, 08:42 PM

Well, once I finally get more info I will let you know. Hoping if I need any parts except the belt, I can find them locally :-/. I emailed the PO seeing if theres anything he can offer me as far as advice. A friend suggested the key or whatever being stripped from the crank/pulley because he once had a cressida do this. He also said he fixed it with jb-weld until he got the parts, so perhaps the PO did this as well except for the getting the parts thing? hah. Thanks for the help though. The car will HOPEFULLY be back here tonight. I really wish I had something more than an 88 Corolla at my disposal.. hah

mirage83 · 06-24-2009, 09:16 PM

A damaged keyway or missing key on the balancer can cause all sorts of problems, including this one (though it's pretty uncommon). Once you get into the problem let us know what you find.

Noisyferret · 06-25-2009, 04:36 AM

Went back to check the car out/pick it up tonight. The belt broke, but not like I expected. The teeth did in fact sheer off in sections. Some of them broke though, and the belt was starting to come apart, like teeth and outer section. Will have the car back up and running in a few days, real glad I don't have to hunt down any parts. This will also give me an excuse to put on the a/c belt and see how the a/c is for not being used for a year or two. It was completely serviced minus the compressor in 2005 at the dealer, but the compressor squealing when not in use is what caused the belt to be taken off. I however don't mind running it at all times in this 100 degree every day weather. This will give me an excuse to clean it up real nice while I wait on fixing it at least.

mirage83 · 06-25-2009, 11:25 AM

Your compressor shouldn't squeal, especially when it's not on and the magnetic clutch is disengaged. It's pulley should be free spinning unless power is going to the clutch, so it sounds like you may have a bad clutch on that compressor. Never had to replace one before, so I'm uncertain how much that'll run you.

Glad you found the trouble with your timing belt, hope it was just a case of age and wear.

Noisyferret · 06-25-2009, 06:53 PM

Yeah, it's clutch is going. I would just replace the compressor though since it's still using r-12 and I could upgrade it. Gonna see if it works first though.

mohitjoshi999 · 07-23-2009, 08:16 PM

Quote:

Originally Posted by mirage83

I suppose it's possible that the pulley on the crankshaft is shot, teeth missing (or ridges missing from the belt itself). Could also be that the belt tensioner isn't keeping sufficient tension on the belt for it to turn the cams. Those are my best guesses for the moment in any case.

i just came across the same stuff here dude
crankshaft

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06-24-2009, 08:06 PM	#1
Noisyferret Stock Join Date: Jun 2009 Location: Florida, Spring Hill Posts: 8	Yes, exactly the situation. Appears intact, pulled on it and it is tensioned still. Crank the car, all the other belts move, but the cams+timing belt do not. The belt is starting to die though. Idk if it's possible, but MAYBE some teeth got stripped somewhere and they are no longer catching?

06-24-2009, 08:34 PM	#2
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	I suppose it's possible that the pulley on the crankshaft is shot, teeth missing (or ridges missing from the belt itself). Could also be that the belt tensioner isn't keeping sufficient tension on the belt for it to turn the cams. Those are my best guesses for the moment in any case.

06-24-2009, 08:42 PM	#3
Noisyferret Stock Join Date: Jun 2009 Location: Florida, Spring Hill Posts: 8	Well, once I finally get more info I will let you know. Hoping if I need any parts except the belt, I can find them locally :-/. I emailed the PO seeing if theres anything he can offer me as far as advice. A friend suggested the key or whatever being stripped from the crank/pulley because he once had a cressida do this. He also said he fixed it with jb-weld until he got the parts, so perhaps the PO did this as well except for the getting the parts thing? hah. Thanks for the help though. The car will HOPEFULLY be back here tonight. I really wish I had something more than an 88 Corolla at my disposal.. hah

06-24-2009, 09:16 PM	#4
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	A damaged keyway or missing key on the balancer can cause all sorts of problems, including this one (though it's pretty uncommon). Once you get into the problem let us know what you find.

06-25-2009, 04:36 AM	#5
Noisyferret Stock Join Date: Jun 2009 Location: Florida, Spring Hill Posts: 8	Went back to check the car out/pick it up tonight. The belt broke, but not like I expected. The teeth did in fact sheer off in sections. Some of them broke though, and the belt was starting to come apart, like teeth and outer section. Will have the car back up and running in a few days, real glad I don't have to hunt down any parts. This will also give me an excuse to put on the a/c belt and see how the a/c is for not being used for a year or two. It was completely serviced minus the compressor in 2005 at the dealer, but the compressor squealing when not in use is what caused the belt to be taken off. I however don't mind running it at all times in this 100 degree every day weather. This will give me an excuse to clean it up real nice while I wait on fixing it at least.

06-25-2009, 11:25 AM	#6
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Your compressor shouldn't squeal, especially when it's not on and the magnetic clutch is disengaged. It's pulley should be free spinning unless power is going to the clutch, so it sounds like you may have a bad clutch on that compressor. Never had to replace one before, so I'm uncertain how much that'll run you. Glad you found the trouble with your timing belt, hope it was just a case of age and wear.

06-25-2009, 06:53 PM	#7
Noisyferret Stock Join Date: Jun 2009 Location: Florida, Spring Hill Posts: 8	Yeah, it's clutch is going. I would just replace the compressor though since it's still using r-12 and I could upgrade it. Gonna see if it works first though.