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Air box thermostat 200 1989

posted by  B.C. on  Thu Jan 10 20:01 CST 2002
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last visit: Wed Mar 28 22:28 CST 2012
[RELATED]

Jim -

The air box holds the air filter. It is mounted on the left end of the radiator, has an air inlet tube towards the front, a large silver pre-heat tube that goes over to the exhaust manifold, and a large short black tube to the Mass Airflow Sensor (MAS), aka Air Mass Meter (AMM).

There is a flap inside the air box that closes off the heated air from the pre-heat tube once ambient temperature is OK. When the thermostat ($35.00) fails the AMM ($100 to 400) gets heated air all the time and eventually fries.

This is a tip that I learned the hard way, and never again. Lack of this knowledged contributes (mightly I'm sure) to the profit of the dealers.

Good Luck,

Bob

:>)






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