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I changed the water pump and the termostat...car runs good but the temp gauge says the car is overheating

Plz help...I'm think in the temp censor is bad?

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  • Master
  • 2,101 Answers

You have a air pocket ,and you need to bleed the coolant system

Posted on Oct 31, 2012

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  • 1 more comment 
  • sareybo Oct 31, 2012

    you dont think its the censor? i bled the system already ..the car is not smoking nor leaking antifreeze...

  • sareybo Oct 31, 2012

    i got heat also

  • teds repairs
    teds repairs Oct 31, 2012

    if you bleed the system then it is the coolant temp sensor

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Posted on Jan 02, 2017

wyatt1582
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SOURCE: do you have to change the timing belt when changing water pump

Yes thats correct the if the water pump goes so goes the timing belt even if it looks good. The timing belt is only good for 50,000 miles if you have more this then you got your moneys worth.

Posted on Mar 20, 2009

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SOURCE: 1992 jeep wrangler 2.5 liter engine still overheating

Did you put a new cap on the radiator? Small as it seems, if it does not provide an adequate seal on the radiator, than the system does not get pressurized, thus keeping the boiling point around 212 deg. your engine gets way hotter than than normally. When sealed right, the pressurized system raises the boiling point to close to 300. thats how is works. If thats not it,(assuming it is the last thing replaced) than you might have either a cracked head/ head gasket/ valve guides, cooling ports, basic large dollar items. Lets hope for your sake the problem is still in the cooling system, before you look at the motor. If you take out the sparkplugs, you'll be able to tell real quick, rusty, burnt whitish-orange looking condition. Good luck

Posted on Aug 15, 2008

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SOURCE: overheating

overheating bmw ...no sign of water in oil..no water from exhaust .. over heats in minutes ..ok when moving ?? please help ..

Posted on Jul 06, 2009

  • 3 Answers

SOURCE: The fuel and temperature gauges are pegged out on

I just had a similar issue with my 1995 Buick century. My issue started out with the gage being almost pegged with the car off. When I turned the key to run it pegged the gage completely. I first called AutoZone and they told me it was either the temperature sensor, thermostat, or gage.
I knew that my thermostat wasn’t bad because I replaced it a while back. I then checked my sensor; I unhooked the two pin connector of this sensor at the block and suspected the needle to drop to zero. This was not the case.
I then checked my wires using a multimeter to verify that there was no short at my firewall. My wiring was fine.
I then called a family mechanic and he instructed me that there is also a "temperature switch" that also is interconnected to the coolant temperature gage. I then found this switch which was threaded into the block near the firewall of my car. I unhooked the 2 pin connector and suspected that the gage would return to the neutral position. And sure enough it did!!
This could have been a heck of a lot easier if AutoZone could have told me that my car has a "temperature switch". But non the less it was only a $15 fix!

First try unhooking your sensors and switch to see if this is the problem, I would lastly suspect your gage to fail!

Good Luck

Posted on Aug 03, 2009

subytech1
  • 244 Answers

SOURCE: car's overheating

Check to see if your radiator fans are working. If you have A/C just turn it on and both fans WILL come on unless there is a problem ie: bad fuse(s), relay(s), or motor(s). I don't mean to scare you, but, someone "could" have a pretty bad head gasket leak and still not see fluid come out of the exhaust. If the fans are both working, it could be any number of things from, a faulty coolant temp sensor, a faulty dash gauge, possible air bubble in the cooling system. Another easy check is coolant consumption, if you are leaking coolant into the cylinder while engine is running and/or into the crank case. Just check to see if your coolant level is going down and/or your oil level isn't growing because of coolant filling up your crank case. Hope this info helps...(subytech)...

Posted on Aug 07, 2009

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Is it actually overheating or is your gauge just saying it is, did you measure the water temp to see if you have a bad temp sensor?
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If fan is good, one way to remove air in the coolant system is to run vehicle while all heaters on. take extra coolant and stop along the way to top off if needed. While driving, keep listening for the fan to begin running when vehicle reaches high temperatures.
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My 1999 Chevy Malibu runs hot? It started when it overheated. We changed the thermostat, then water pump, then temp sensor gauge and the temp gauge goes high but only when the heater stops blowing hot...


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Ok, Let see who the expert on this problem so read this very carefully. Yes my temp. gauge up and down 07 Nissan Armada all parts I purchase from the dealer change thermo with antifreeze from the...


I have no idea whats wrong. And Im not a mechanic, but your description is unclear. you mean the gauge is jumping around? Or does it rise and fall slowly? How long? How hot?
After changing the thermostat was it still doing it exactly as before, or did it change at all?

Question is,
Is it actually overheating or are you just anal about eveything being perfect?
Is it nescessary to actually fix it, is it a real problem?

All the stuff you changed should last 10 years or more, except perhaps the thermostat and water pump.
Check your voltage for consistancy. If the regulator is slightly malfuctioning, not enough to wreak havoc, it might just be spiking the gauge.
Also it might be the gauge itself is malfuctioning. You havnt changed that yet.

Good luck

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