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Re: Fuel injector fan
Look for a sensor mounted on a metal bracket at the rear of the valve cover
over the heat shield. there should be one wire attached to it pull the wire
off and touch it to any good ground point. The ijector cooling fan should
run. If it does not, check its relay for clicking sound when you ground the
wire. If it clicks, check the fan motor by giving it 12V and see if it runs.
If it does, check continuity of all wires in the circuit. If they are OK,
replace the sensor. It unscrews from the bracket.