Question about 1995 Chevrolet Suburban

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My 95 chevy suburban 5.7 temp. gauge fluctuates from operating temp 195 to 170 back to 195 as I drive

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  • 246 Answers

There are two things that can be wrong here.
1-wiring or the sensor itself may be bad.
2-you have a bad head gasket(not blown all the way)but starting to go therefore the fluctuation on the gauge itself.
does it go down when you give it gas? does it uses coolant with out leaking? let me know

Posted on Oct 14, 2013

Testimonial: "the temp. gauge goes down when I'm driving and at times it will go to 210 and slowly drop back down plus i have white/gray smoke coming from the exhaust. not leaking anti-freeze and the anti-freeze level is good"

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2002 Chevy Suburban: Fuel gauge reads empty, tank is half full

Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.

Posted on Aug 27, 2009

  • 285 Answers

SOURCE: antifreeze ts boiling back into reservoir.

it sounds like a possible head gasket problem,you can get the fluctuation from combustion gases getting pumped into your cooling system and creating gas pockets,i would suggest taking it to a shop and have them do a block test to look for combustion in the cooling system to confirm the problem,that way you will know for sure,if it comes up negative they can also perform a flow test to make sure there is no restriction in the cooling system such as a plugged radiator or a bad thermostat,hope this sheds a little light on it

Posted on Sep 12, 2009

Testimonial: "I bet you've hit on the problem ! Car has been "using " antifreeze for a couple years now, with no leaking anywhere. Lost through the head gasket ?"

deanhornberg
  • 9 Answers

SOURCE: Temperature gauge fluctuates and the heater blows cold air

Definitely check your fluid level in your radiator. Top it off all the way. I've seen that happen multiple times on cars that were low on anti-freeze. If that doesn't work try replacing your thermostat. It's cheap and the easiest place to start if topping off the fluid doesn't get you fixed up.

Posted on Aug 29, 2012

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