Question about 1993 GMC Sierra

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Temp gauge is pegged to the top and stuck. check gauge light is on

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Is engine hot also?

Posted on Oct 14, 2010

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My 2003 Saturn VUE is saying that I'm over-heating (both the warning light stays on, and the gauge stay pegged hot) even after my car has been sitting in the driveway for 2-3 days (or longer). There is not...


i'd change the engine temperature sender unit , or just disconnect it for a while and see if the gauge symptoms disappear , if they do then change the temp sender unit,if the symptoms remain i'd say get the OBD codes read as may have a faulty dash component

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You could replace the sending unit to cross it off the list of possible problems.
You could check resistance cold and then with the engine at normal temp too. The gauge on the dash could be faulty too.

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Heat blows only when car is in drive when coming to stop light it blows cold air. Have added more coolant but it has not fixed the problem


Hello,

You problem sounds like a "Blend Door" issue, you have these doors that open & close and everything in between to adjust air temp. These doors have a "peg" that is connected to an arm or wire just like on a ten speed bike to shift gears, that peg may have broken off.

Another issue may be a stuck open thermostat, if you have a temp gauge is it running at normal temp? If the thermostat is stuck open then heat may become an issue.

I have found several 2007 Chevrolet Impala blend door issues here in fixya.com.

Hope this helps.

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My temperature gauge is not registering and my check gauges light comes on when im at a stoplight.when im driving the oil pressure is fine but when i come to a stop or idle the check gauges light blinks on...


A faulty temperature sending unit. It should be located on or near the thermostat housing. If any of your gauges reads zero, the check gauges light will come on. Sometimes even if the fuel gauge gets too low, it will trigger the light. It may be the connection at the sending unit. It may have become loose so wiggle it and make sure it is securely connected to the sending unit. If the temp. gauge needle pegs at the top of the gauge, it means the sending unit has grounded out and is faulty. If it jumps, reads off or not at all it could be a faulty sender or a bad connection.

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aFTER A HEATER CORE WENT OUT THE 454 OVERHEATED. hEATER COR REPLACED TEMP GUAGE STUCK PAST 160. cOOLING WORKS FINE NOW, TEMP GUAGE JUST PEGGED ON HIGH
wHAT NOW.....

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yes. but check every thing else first. coolant level being the most important. then the thermostat.

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Car over heating. tempature gauge fluxuates


Your overheating problems can have several possible causes.
1) Airlock in heating system - solution - bleed air from cooling system. Method is dependent on make/model of vehicle
2) Radiator blocked - solution - drain and flush radiator
3) Failed waterpump - solution - fit new waterpump
4) Engine thermostat stuck in closed position - solution - fit new thermostat
5) Electric cooling fan (if fitted) failing to operate - solution - check fan, fan operating switch, all wiring and connectors
6) Not enough coolant in system - solution - check and top up to required level. Also check all hoses for sign of leakage.
7) Faulty temperature gauge giving incorrect reading

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