Question about 1988 Chevrolet Celebrity
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Posted on Jan 02, 2017
You have an heated Oxygen sensor. 2 of the wires heat up the sensor and keep it at a certain temperature, it is turned on and off by the computer. The other 2 are use to send a very low voltage reading back to the computer to tell the computer if the engine is running rich or lean. I don't have a diagram to tell you which wire does what but you can get a manual and that should give you the information that you need and tell you how to trouble shoot it to tell if the sensor is bad or not, you may want to look for a wire laying on the exhaust, I have found wires burnt and lay on the metal.
Posted on Oct 31, 2008
try turning on the key and having someone stand by the GAS tank and listen for the pump to kick on? They may have to get lower to the ground to hear it turn on but they/you will know if you hear it.
Posted on Jan 22, 2009
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