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Old 06-27-2009, 12:30 PM   #1
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Thermostat on a 99 Turbo . . .

. . . please school me.

(It's gotta be the thermostat, temp gets very high in less than 6 blocks of driving, but I can touch the radiator and it doesn't feel all that hot to me).
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Old 06-27-2009, 12:43 PM   #2
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. . . please school me.

(It's gotta be the thermostat, temp gets very high in less than 6 blocks of driving, but I can touch the radiator and it doesn't feel all that hot to me).
Yup.
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Old 06-27-2009, 01:02 PM   #3
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You probably need a new one of those.

Paul
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Old 06-27-2009, 03:30 PM   #4
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Any replacement tricks, or is it just like doing a c900? I noticed that the part number for the turbo's seems to go all the way from '77 to '93.
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Old 06-27-2009, 06:02 PM   #5
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Is the upper radiator hose (downstream of the thermostat) hot, are you sure the water pump is pumping?

Do you have the early B engine with the jackshaft driven pump, or a later C900 engine with the belt driven pump?

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Old 06-27-2009, 08:22 PM   #6
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It's a B engine originally out of a '79 900 turbo - with about 130,000 miles on it. Edit -- I will have check on the hose.
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Old 06-27-2009, 10:46 PM   #7
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I only asked because with the shaft drive water pumps on the B engines (under the cover on top of the block) it's not out of the questions that the impeller shaft seized, and the gear teeth on the jackshaft and impeller shaft got ripped off and the pump impeller just isn't spinning.

If it's spinning and pumping some coolant you should at least feel a little heat in the hose just downstream of the T-stat, if it stays completely cold when the coolant temp is reading on the hot side, it might be worth popping the cover off and varifying that the impeller turns when you rock the car with it in gear to rotate the engine a little bit. If the engine turns and the impeller doesn't move then it's water pump.

Hopefully it's just a stuck t-stat.

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Old 07-26-2009, 12:51 PM   #8
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Yep, it was the thermostat.

Pulled out the old one and it had stringy stuff wrapped around it. It was like pulling hair out of a drain. Not a ton of it but more than enough to go Hmmm.

Put the new one in, let it idle for 30 minutes, everything was fine.
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Old 07-27-2009, 06:19 AM   #9
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Good to hear Greg, After making the trip from Meyer to the Cities the shaft should have failed by then.
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