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whats the easiest way to check about a hg problem?and the motors been flushed twice in the past 6 months, once when it blew the lower rad hose and then again when it got a new rad, thermo, and hoses.
Do you loose coolant, after you run on the hiway and shut off does your overflow tank over flow?
Its not a head gasket problem, and DONT FLUSH YOUR MOTOR EVER!!! not with bilstien or any like that, you will lose compression and shorten the life or your motor. and an engine flush would have nothing to do with this problem.
I would check to see if your water pump is working correctly. If it's only putting out like 50% of the pressure that it should...(easy to check as well, IME)
do you have an electric fan on your rad? at high speeds it may block the wind flo. how fast are you driving? check all fluids, maybe your water pump too. the water pump is a rubber wheel and may be rotted, at high rpms it might not be effective. Just a few things to look at
slow down? drink faster? maybe that might work
where is the temp getting read from? check and make sure the wire is not touching the exhuast manifold or that the coil that goes around it itsnt touching anything either
has the engine been bored oversized?? when i bored my 22R to .060 oversize i had to go to a v6 radiator, because the stock radiator would overheat on the interstate or hwy hills
radiators come with a rating system. The stock 2row toyota radiator in the 22r/22re (96 to 116 HP) trucks are rated at 250 HP. The radiator in the '86 turbo (133HP) is the same only with a nipple for the coolant return from the turbo. Just boring .060 over should not have overwhelmed the stock radiator were it in good order.1stgenboy
Is it eatin coolant?
Since no solution has been found yet, here is the solution to my overheating problem I had a while back.I had taken the fan blades off my fan clutch and when I remounted them, I accidentally put the fan blades on backwards, so the fan was blowing air AWAY from the radiator instead of into it. So I would start the motor, pop the hood and confirm that air is blowing in the right direction.
Putting the fan blades on backwards does not reverse the airflow.It makes the curve of the blade backwards, which pretty much makes the fan useless. The airflow will still be in the correct direction, but probably about 25% of what it was.
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