Question about 2003 Chevrolet Suburban 1500

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The tempeture gauge went crazy and it rolled passed the 260 sign and my truck isnt even hot

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Engine coolant temp sensor has gone bad.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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Ford five hundred 2006 the odometer is similar to movie matrix, is crazy for only 10 second, and back to normaly and tha rpm go down and tempeture and gas , five or six light intruments on whats is this....


I have seen the coil on plug units in these vehicles when they start to go bad they can cause some crazy things like the temp gauge going to full hot and then back to normal and other things like that. it is hard to tell which coil with out the vehicle in front of me sorry i cant give you more info than that.

May 27, 2011 | 2006 Ford Five Hundred

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I have a 99 suburbani got new heads put on this past summer and just yeaterday my tuck ran hot an I put antifreeze in it then it cooled down and my tempeture gage was 160 rather than 260 then when i went...


Yes, the head gasket may have broken or the heads aren't mating properly with the block. At any rate, the leak is probably from the cooling system to the cylinders of the engine.

Jan 14, 2011 | 1999 Chevrolet Suburban

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I have a 2001 dodge stratus and the heater only blowed cold aire now we changed the thermostat and it blows warm air when idling but when driving still blows cold need some help please


where did you buy your thermostat? if you bought a fail-safe style thermostat it could have been no good before you even put it in. also is your tempeture gauge coming up to operating temp?? if it isnt your thermostat may be stuck in the open position allowing the coolant to circulate freely and not actually warm up. i would also check the lines going into the heater core. if one line is hot and the other line is cold than your heater core is probably in need of a flush or replacement.

Dec 01, 2010 | 2001 Dodge Stratus

1 Answer

Weird problem just started. Noticed the other day when I turned off the car, the fan continued to run for about another minute. Then, this morning, I was sitting in the car with it running and...


the first thing to try is turning the heater upto full heat(a/c off)if the temp guage goes down THEN CHANGE THE THERMOSTAT...(hot oil,if too hot, is thinner than the normal sae rating so the oil pressure will be lower.otherwise no real problem.

Sep 23, 2010 | 2001 Pontiac Firebird

1 Answer

Temp. gauge reads high some times. but the motor really isnt hot


It sounds like the coolant temperature sensor is beginning to fail. It is highly unlikely that the in-dash gauge is a problem. The coolant temp sensor inputs to the computer affecting everything from radiator fan speed, engine fuel/air calibration and a variety of other parameters.

Be absolutely certain to "burp" every bubble of atmosphere from the coolant system too. Air bubbles have the amazing ability to prevent coolant flow and will cause all sorts of problems, especially if the bubble wants to hang around the temperature sensor location.

Normal operating temperature is going to be around 210 F.

Most Autozone, Advance locations will read engine problem codes at no charge, so drop by one of those locations and let them read the problem code.

My guess will be the coolant temperature sensor. Then have the problem code reset, remove all air from the coolant and let us know how this worked.

Mar 11, 2010 | 2004 Chevrolet Impala

1 Answer

Tempeture gauge fails replaced tempeture gauge sending unit whats next gauge stays at hot maxed out all the time when ignition is on


Sounds like you have a short to power or ground somewhere. Follow the wires from the sensor, and find it.

Aug 05, 2009 | 1994 Honda Accord

3 Answers

Tempeture gauge


this is one of three posabilitys or it could be the guage or the wirring to the guage

Oct 19, 2008 | 2001 Oldsmobile Silhouette

1 Answer

Temp gauge


the sender for the gauge is on the cylinder head near the spark plug if you unplug it the gauge should stay all the way cold then ground it out it will go all the way hot if that reads like that replace the coolant sensor

Oct 04, 2008 | 1999 Chevrolet Suburban

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