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Is it a belt?

2833 Views 42 Replies 13 Participants Last post by  jlensbo
On the way to work all of my warning lights came on and the car overheated. It's pouring ice and rain and I can see only one belt in my engine. The fan is not turning but I can spin it by hand.
Would your guess be the alternator belt? Would the fan belt cause the warning lights to come on? I can't look at the car for another 8 hours...
1982 280zxt.
Thanx!
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I had plenty of water in the radiator and water bottle.
Come on, You could use at least a little common sense here. :eek: Take a LOOK at the alternator, is there a belt on the pully? If not, I'd bet you broke/slung the belt off. How old are the belts? ::)
If the belt is still on and not broken, then it sounds like your water pump has seized. Or your alternator. Water pump is more likely.
Belt less than a year. Can't see squat in this weather...
Hopefully the belt just slipped off. If the w/p is shot,I feel for ya. I see y'all got some shitty weather up there. :(
It was the alt belt... Broken.
Lemme guess, autozone belt? Might want try spinning the W/P (not the fan) just to make sure it's not siezed, as ghost suggested while your at it. ;)
I'll try the spin test. From what I hear here the water pump is a real byotch to do.
And you guessed it - Autozone!
replacing the water pump is a 45 minute job. No biggie.
Your car overheated...so nothing was pumping the water through the engine. You can spin the fan by hand, which is connected to the ...water pump....same belt as the alternator. Many times if you changed the alt and/or belt, the bracket gets loose. I don't see what the problem is here...other than the obvious.
z heads tend to warp after an over heating event.

change the belt with a good quality belt (gates or nissan).

keep an eye on the oil and water.
palladin said:
Your car overheated...so nothing was pumping the water through the engine. You can spin the fan by hand, which is connected to the ...water pump....same belt as the alternator. Many times if you changed the alt and/or belt, the bracket gets loose. I don't see what the problem is here...other than the obvious.
It's a clutch fan. The fan will still turn even if the w/p is siezed up, hence the suggestion to try turning the w/p itself instead of just the fan. It'd suck if he put a new belt on just to have it burn into in a minute.
Looking at the diagram in the FSM, there's the fan, the clutch, then the water pump. Will I be able to reach my hand to the water pump and turn it without the fan moving?

I had to catch a ride home and leave the coupe at work. I ordered some Gates belts ( alt and ps ) and should get them by the weekend. All I think I need to buy is a bar to pull and hold the alternator when I tighten it back up. Have I overlooked anything?
You should be able to grab the fan with one hand and reach the w/p pully with the other. Hold fan and try to turn the w/p pully. It should turn with a little bit of resistance. Also make sure the alt. spins freely.
Unless you don't have a crow bar then you would need to buy a bar, or use something else like metal piping, wooden dowel, or anything like 4 ft and has some strength
Yea what he said^^^ ****, almost anything will work for that ;D I bought a 4pc. prybar set( longest is 3 ft.) for that kind of stuff because I'm almost needing them everyday.
It is nice that there are three separate belts on the engine so you have only a 33.33333% chance (your case) of the only really necessary one going. You didn't hear a loud thudding noise though prior to your engine over heating, cause when my power steering pump belt went it sounded like a squirrel got lodged up in my fan duct....
He said is spun freely. If so that would have spun the water pump had the belt broke. If the water pump was locked and the clutch was OK, it would have spun maybe 2 revolutions at most, it would not have spun freely. Though to the inexperienced that seem to perpetuate this site, yes he should attempt to turn the pump itself to cover all bases.
Long screwdriver will work. Anything to put some pressure on the alternator. Don't over tighten it, you will burn out your bearings in the alt. Leave yourself about 1/2" deflection in the middle of belt.
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