TEMP GAGE JUST QUIT , AUTO ZONE PUT SCANNER ON IT CODES P0480 AND P0116 CAME UP , GOING TO change the temp gage sender , but i think something else is wrong , find out after i change tsu ,
Was driving it ,every thing was fine , shut it off and went to leave looked down temp gage not working at all , and now the 2 fans come on about 10 sec, after it starts , and it is cold sat for 5 hours , changing the t.s.u. in morning it is a 2004 malibu maxx 6 cyl
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Re: TEMP GAGE JUST QUIT , AUTO ZONE PUT SCANNER ON IT...
Code p 0480 refers to engine coolant blower motor 1 ---circuit malfunction=== causes ---wiring ---engine coolant blower motor ---ECM
code p 0116 refers to engine coolant temperature (ECT) sensor ---range b/performance problem ====causes coolant thermostat---poor connections---wiring---ECT sensor
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My info shows the temp sender is not the coolant temp sensor, if wiring is correct. The temp sender is a one wire connector, I believe yellow wire. Take that wire loose from temp gage sender, key on, use a digital multimeter, any voltage on the wire? If not not have to check proper wire colors to and from instrument cluster. The voltage comes from meter fuse. I wouldn't think the fuse is the issue or you would have more than one problem.
Well it can be one of too things the gage or the temp sensor.
its most likely the sensor. The temp sensor is normally mounted with the thermostat housing which is on the top of the engine and has the top radiator hose going to it if you can't see it, try taking off the plastic covers. With the ignition on so all gages are reading go and unplug the sensor the gage should drop back strata way, this tells you that you have the wright sensor there are sometimes 2 one for the gage and the other for cold starting. There is a possibility that the problem may be coursed by a squashed or rubbed throw wire so if you can't make the gage return to cold by disconnecting the wires then start following the wires back along the engine.
I think you will find a faulty sensor is the cores of your problems and should be easy to pick up at any car part place.
I think you should start thinking it might not be the gage itself but >Problem with the wires in the circuit itself Also warm car up take a thermometer & check coolant tempature cross referance with temp gauge in the car
Likely the temp sending unit has failed. They aren't very expensive. One on 4.0 engine is on the thermostat housing but don't know which engine you have. Blower problem could be the resistor pack but not sure exactly where it is on yours, it is always on the heater box and generally looks like a flat fiber plate with four wires going to it.
Remove lead from temp sender on engine and ground lead, watch gauge for kneedle movement if it moves to register then remove and replace temp sender unit, if not check power supply to gauge, and related fuses and or grounds...
The problem is usually one or the other. Both get 5 volts from the engine computer. If the problem is the gas gauge, you'll have to change the sender in the tank. Generally, an aftermarket pump/sender unit is $150-175. Get one and drop the tank to install. The temp gauge is another matter and it could be dirty coolant. If both are going nuts together, you'll need a new computer. Junk units are fine.