temp gauge climbs up to hot,but sometimes a quick jerk


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temp gauge climbs up to hot,but sometimes a quick jerk sends it back down

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Auto Repair Home>> Automotive Repair>> Car Troubleshooting

starrgayle
New User

Mar 5, 2008, 4:56 AM

Post #1 of 3 (1484 views)

temp gauge climbs up to hot,but sometimes a quick jerk sends it back down	Sign In

I have a 95 chevy lumina sedan 3.1l. Quite often the temperature gauge rockets up, but if I step on the gas or make a quick turn it will sometimes go back down. When I go to put water in it hardly takes any? Would this be a stuck thermostat? The fans working. ThankYou!

dmac0923
Enthusiast

Mar 5, 2008, 6:59 AM

Post #2 of 3 (1481 views)

Re: temp gauge climbs up to hot,but sometimes a quick jerk sends it back down	Sign In

i had the same year car with the same motor and the same problem LOL. it turned out that air was getting into the coolant system through a crack in the radiator. mine cracked on the plastic side tank of the radiator where the upper coolant hose nipple is. so what i figured was happening was as the engine warmed up the crack expanded letting air into the system. And like you, if i floored the gas pedal or whipped the wheel the temp would go back to normal only to eventually increase again. so i believe that movement was moving the air bubble in the system.

at first i thought i possibly had a bad headgasket. so i popped the hood and opened the radiator car and let the car run and it was "burping" like crazy meaning there was a lot of air in there. and i just happend to accidently slightly lean on the upper radiator hose and saw coolant squirt out of the crack like a water gun.

i didnt plan on having the car long so i took some 2 part epoxy and sealed the crack. if you plan on keeping the car and find a crack in the plastic tank i would replace the radiator.
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2002 Ford Ranger
2004 Toyota Corolla
1969 Ford Mustang Mach 1

starrgayle
New User

Mar 5, 2008, 12:48 PM

Post #3 of 3 (1479 views)

Re: temp gauge climbs up to hot,but sometimes a quick jerk sends it back down	Sign In

thanks I will check it out and let ya know

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