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Join Date: Jul 2000
Location: Northeast New Jersey
Re: 89 Silverado temp problems
OP says he replaced the radiator and the water pump.Since the problem keeps returning even with all those new parts I'm thinking this may be something that keeps staying the same.
To the OP : That engine has only 1 belt and it's a serpentine belt setup,is that correct ? What is the possibility that someone put the belt back on but in the wrong direction of rotation before you bought the truck? That is the only thing I can think of that even if you installed a new belt, it would get put back on the same way that it came off.
It is possible to install a serpentine belt the wrong way and it will spin the W/P backwards.Look under the hood for a decal with rotation direction or an raised area on the fan shroud showing belt routing direction.
If the belt is installed right,have you tried flushing the engine block with a garden hose.
(but only after you responsibly drain the anti freeze into a pail)
71 El Camino SS
406 SBC M21 3.31 12 bolt
"Quality is always remembered,long after the price is forgotten"
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