Northstar Engines and System Technical Discussion Discussion, My pulley melted in Cadillac Engine Discussion; Today I got to work and smelled someting like burning plastic. Didn't think much of at first since I work ...
Today I got to work and smelled someting like burning plastic. Didn't think much of at first since I work on a construction site. When I went to lunch my car's coolant temp hit 250 degrees. After I let the car cool down and got back to the job site I checked ton see what was wrong. The pulley next to teh tensioner for the water pump melted and the belt came off. What gets me though is the belt still looks really good. I need to know what that pulley is called. I can't seem to find a name for it. Also how hard would it be to change it? it doesn't look as bad of a job as I originally thought, but I've had jobs like that before that took all day.
You just need the puller/installer tool and it is pretty much like removing a power steering pump pulley.
Check the water pump to see if it locked up.
If it did it stopped the belt and melted the pulley.
Both the tensioner pulley and the water pump spin. So I don't think any of them locked up. What I think happened is that the tensioner pulley and drive pulley were rubber due to too small of a belt. I'm still going to check everything out though. Thanks for the quick replies.
I can't seem to find the drive pulley anywhere. Does anyone have a part number? I think I might have found one on Jegs.com, but I'm not sure. Also I came across a pretty detailed right up of a northstar rebuild on the fiero forums.
Make sure the water pump pulley spins smoothly and is quiet, try to move the pulley laterally and see if it will move. You could have a part time bearing, part time brake in there.
Those cam pulleys don't melt for no reason.
I'd hate to see you do that work and have it happen again.
This just happened to me yesterday. Both the tensioner pulley and the water pump pulley both broke. The belt is in bad shape too. I can't seem to find these parts anywhere... Can someone direct me to where I can get the 2 pulleys and the belt? Thanks
Automobile(s): 1997 ETC (GAVE TO STEPSON 2011), 2000 DTS (RIP)
FOUNTAIN HILLS, AZ
Re: My pulley melted
Go to gmpartsdirect, send customer service an e-mail with your VIN# and the parts you need and they will reply with part#s and costs. A very good source, very good people, if you are not in a great hurry - otherwise go direct to the dealer. I got my water pump drive pulley (actually labeled for power steering) remover/installer at Harbor Freight for $10 and it worked great.
I've been trying to figure this out for some time now without pulling the water pump. The water pump pulley won't move. How could I fix it. The pump is a year old. Ewill3rd what do you mean by a part time break? Is there something I should look for or do I have to pull the water pump?
What I meant was sometimes when the bearings start to go it will spin sometimes and lock up sometimes.
Meaning... it could have stopped spinning to melt the pulleys but then started rotating again to make you think it was okay.
If the belt is off and you cannot rotate the water pump it is locked up. You need to replace it.
On the N* you need a special socket that you can buy, borrow, or rent from almost any parts store.