Question about 1998 Chevrolet Malibu

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Overheats, thermostate replaced, water pump replace, radiator fluched and drain plug replaced. water temp light and check engine light comes on then goes on then comes back on. car starts hard

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It sounds like you may have a bad cooling fan. You can test this by running a jumper wire from the fire supply line going into the cooling fan to the battery. If the fan comes on this will indicate a bad fan relay which will have to be replaced. Or, it could be bad radiator hoses can **** together and cause it to run hot. Don't rule out a blown head gasket but start by checking the easier things first.

Posted on Aug 05, 2010

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Posted on Jan 02, 2017

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2 Answers

I REPLACED WATER PUMP, FAN CLUTCH, TOOK OUT THERMOSTAT, REPLACE RADIATOR CAP, TOOK RADIATOR TO GET CLEANED AND STILL OVERHEATS WHATS THE PROBLEM


about the only thing left is that the engine block & head may be blocked, also check that the radiator hoses have not gone soft & flatten, especially the bottom one, because you have done everything else that can be done, at worse it could be a blown head gasket......hope this helps.......cheers.

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I have 1996 dodge neon. temp gauge needle goes to hot. i have replaced the radiator cap, thermostate,fan relay switch,drained and refilled coolant, and a oil change, and temperture sensor. when i turn on...


Have you checked out the water pump? Most of the time, you can feel movement in the /head shaft area before it fails. Water pumps usually go slowly, pumping less and less water (making the engine run hotter). The also get noisy when they start to fail.

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2004 Grand Prix GTP (supercharged.) After the water pump was replaced the temp gauge does not go above the 1/4th mark. I seem to remember that when the car was new new the gauge stayed at the 1/2...


How is the interior heat? Is it normal or are you only getting about 1/4 of what it used to be like when it was newer? Are you running a summer thermostat or a winter thermostate? The thermostat may be defective and not closing all the way and needs to be replaced or the Coolant Temperature Sensor may be Defective and needs to be replaced. I love these cars. Good Luck and have a good XMASS.

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Any clogged cooling hose water, bad water pump or clogged radiator. Are you check any leak of coolant or white smoke from exhauts?

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94 Jetta w/2.0 engine overheats.I took it to a mechanic and he said my thermostat was fine.So what else could be causing it to overheat??And it does have a small oil leak too but I can't pin point it.


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Losing radiator fluid. is it water pump or radiator? add water in come out quickly engine overheats.


physically have a look where the water is coming from,dont drive it till you fix it or get it fixed,as you could cook the engine....very expensive

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1 Answer

My 1994 Tracer is overheating, I have changed the thermostate. The radiator had a couple leaks so I plugged them and now there are no leaks. I think the water pump is still pumping and I get an check...


you may have to flush your system out. just take and loosen the nut on the bottom of the radiator. get all of the radiator fluid into a container. then connect a water hose to the top of the radiator. with the drain plug still out, turn the hose on and the car on and flush the system. there may be rust or something else clogging the system. if not hat then check your hoses to see if they are collapsing. you may need to replace them

Jun 16, 2009 | 1994 Mercury Tracer

1 Answer

Engine temp and heater temp not right.


Take it to another shop, The water pump doen't hold the Thermostate. The thermostate is in the thermostate housing where the end of the radiator hose is connected to the egine. 
There are different thermostate rating to which temprature you'll like your engine running at. Most common would be a 190 thermostate you can get them from 160 up to 220. 
As for the water pump you would know if that failed do to over heating or leaking from the weep holes in it. 
Bring the truck to another shop and have them flush and Antifreeze if it's never benn done and change the Thermostate to a 180 or 190 and should be done every Two years do to waer and tear. Note the 180 runs cooler then the 190 and so on. 
I run mine on 160 since I tow a trailer and the radiator also cools the transmisson oil too. Just for though but you should be fine at 180 or 190.
Good luck and hope this helps.

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Dodge 318 overheating.


HI. It could possibly be the the thermostat is stuck shut. If thats the case when the vehicle warms up it will probably overheat all the time. The best way to tell is buy a new one and change it. They are usualy around $10.00 at any autoparts store. If you change it and it still overheats, it could be the waterpump.

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1 Answer

1990 Subaru Liberty Overheats


Hi,

I had the same problem with my 1993 Liberty LX. Remove the thermostat (located inside bottom radiator hose engine connection - take the connection off and thermostat is inside). Reassemble (minus thermostat), reconnect bottom hose. Slowly (very, very slowly) refill the radiator and remove the bleed plug ( located beside the top hose connection to the radiator - a black square plug with a phillips head cross in the middle). When the radiator is full and clear water (no air bubbles) is coming out of the bleed point, replace the bleed plug and then the radiator cap.

Run the engine for five minutes (approx) or until normal engine temperature is reached. Allow the engine to cool down and recheck the water level - fill if necessary ensuring that the bleed plug is open and clear water is coming out of that point. Replace Bleed plug and then radiator cap. Run engine for five minutes (approx) and then test dive. If the engine overheats keep filling the radiator until there are no air bubbles coming from out of the bleed point.

This fixed my overheating problem. Good luck and safe motoring.

Aug 06, 2008 | 1993 Subaru Legacy

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