Question about 1999 Isuzu Rodeo

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Fan blows intermittently. Sometimes works, sometimes doesn't

I was told by mechanic that I need new blower motor and relay, but I don't understand why I would need a new motor if the relay was intermittent. What is involved in replacing the relay and/or motor.

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You need to replace the motor and resistor at the same time. The motor is not turning freely enough and will build up resistance in the wire and this will short out the resistor relay. I sold a lot of resistors working at a Isuzu dealer and if you did not replace the motor, the new resistor had no warranty on it. So if you just replace the resistor relay you will burn it up again.

Posted on Aug 12, 2009

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The motor goes bad because leaves and such make their way down and clog it's air intake. Pick up a new one at your local auto parts store if you have to.

It's four screws on the motor housing, located under the glove box (2 screws) and the wiring is harnessed, relay plugs in, so no sweat there.

While it's off, reach up into the cavity that feeds it air on the upper left.

You may want to wear a glove. The design on this generation Rodeo is horribly flawed. I pulled a squirrel-sized wad of rotten leaves and pine needles from mine after replacing the motor and resistor twice.

Like drinking a milkshake through a coffee stirrer, you know that's bad for a motor. I clean mine out every fall, before running the heat non-stop all winter.

Posted on Aug 15, 2010

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