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Why does the cooling fan only come on when jumping the b a connections in the aldl 1992 sl1 sensor ohms are fine 5 volts going to sensor I have trouble codes 13 32 could that have to do with it?
Jmar254
Dtc you listed are the following 13 O2S Circuit 32 EGR Error doubtfull this has any thing to do with a cooling fan, only if there is a ECT sensor problem. Is you car overheating, and what is the coolant temp? At a certain temp seen by the ECM then the ECM will turn on the coolant fan. Usually in GM vehicles at 220 deg F and run till ECT is at about 200 deg F. Should provide more info what the problem you are having with the cooling fan. If access to a scan tool observe the ECT and when the fan turns on when running the vehicle. The Cowboy... Can pretty much guarantee the coolant sensor is faulty. The sensor is in the back of the head in the middle and has 2 wires to it The one wire sensor beside is for the coolant gauge. Check the sensor When you remove it you will find hairline cracks on the element of the sensor that causes improper readings.
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