Question about 1997 Chevrolet Cavalier

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Its over heating and the antifreeze is still full the guage moves towards the H sign but there is still antifreeze in the tank whats wrong ?

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Could possibly be the cooling fan isnt working, if it has air conditioning turn it on and see if the fan is runnning if not it should be on when it gets hot. another possibility is a blown head gsk but far less likely.

Posted on Jul 17, 2009

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The coolant fans may not be turning on check the fuses in the enigine fuse box they maybe blown

Posted on Jul 17, 2009

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Why do heat and defrost only work when I'm moving?


it sounds like it may be low on antifreeze. sometimes when there isn't enough antifreeze in the radiator it wont put out much heat until you rev up the engine. at idle the water pump cant move the anti freeze but at a higher rpm. it can. but there is a chance you may burn up the water pump by not having enough antifreeze. check it and fill to proper level and see if this cures it.

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Over heating


Try checking your antifreeze levels. If you antifreeze tank is low try filling it to the "Fill" or "Full" level. If your antifreeze tank is empty, remove your radiator cap, (make sure the engine has cooled off. If you try to open it while it's hot, you could get sprayed with hot antifreeze) and fill the radiator slowly. Then refill your antifreeze tank. Remember to always mix the antifreeze with water (50/50 mix) for full protection.

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I am loosing antifreeze but not by any leak. must be by steam. when it is "low" on coolant; i will overheat, no heat in truck. Thermostat has been replaced. when radiator is full, guage will...


Bad news.Most likely cause is internal leak though head gasket. Check for water in oil. Dipstick oil might be grey and emulsified. Or if leak is in into cylinder coolant may just be going out exhaust. Sorry

Feb 07, 2011 | 1999 GMC Suburban

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Just filled the gas tank in my 2006 f-350 turbo diesel super duty (6.0), started the truck and the guage showed a full tank. Drove down the road about 1/10 of a mile and the guage dropped to dead empty...


A loose connection on the sending unit could cause the problem but also moisture in the tank in cold weather could also be a factor in which i would add fuel line antifreeze to a full tank of fuel..........Hope this helps you out.

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Left petrol tank stays full, not feeding/emptying - BMW X5 4.6is


inside the tank there are 2 or 3 hoses that transfers the fuel to where the fuel pump is. check for leaky hoses.

Mar 10, 2017 | 2003 BMW 5 Series

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should be a grey wire going to the top of fuel tank connects to fuel guage / when the guage in the tank reads grounded it shows full , no ground it shows empty. if you ground that grey wire and the guage jumps to full then faulty guage if nothing maybe bad ground on the tank itself. the guages are a reostat like a tyco race car gun the more it moves the more it grounds .. good luck

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Pontiac 2003 Sunfire Gas Guage doesn't work


Your needle moving from empty to full and then back to empty indicates that it is trying to set itself (most cars do this each time they are started). So, yes, there seems to be a problem with the sending unit that feeds information to your gas guage. Prior to cracking open your fuel tank, you might try tracking the wires from the back of your guage as far as you can towards the tank. Then track the wires from your tank as far as you can toward the guage. Watch for damaged wires and/or loose connections as you go.

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1 Answer

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1.If the needle on the guage is stuck. you can try tapping the guage to see if the needle moves or turn the ignition on and off a few times to see if you can get it to move. If the guage drops to empty when you turn off the ignition you know that its not the guage. (note that the guage does not drop to zero when ignition is off with all cars of this age).

2. The problem could be with the sensor in the fuel tank itself. Rocking the vehicle up and down from the rear (you will need help doing this) may free the sensor level indicator ball in the tank.

Dec 17, 2008 | 1983 Jeep CJ7

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Pajero NK87 petrol guage not working, shows empty even when tank is full


Sounds like the Fuel sender unit in the fuel tank needs replacing however you may want to check that the electrical plugs are contacting properly,Check that the gauge is working by putting a piece of wire from the sender unit wire to the chassis,at the fuel tank sender unit plug,Turn ignition on while watching gauge if it moves toward fill turn ignition off and remove wire to chassis.If gauge moves it means from the fuel tank to fuel gauge is intact and not your problem.

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