Question about 1998 Pontiac Grand Am

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Over heating blown head gasket fixed car running find until you drive it it get hot fan working radiator clean light on code reads cam sensor

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I would indeed fix the cam sensor issue, however it obviously isn't your overheating issue. I would be sure there is no air within the system. If you changed the head gasket it more than likely got hot before, and likely for the same reason that it is now. I would without a doubt change the thermostat now, it is good practice any time you do any kind of major over haul, especially for the price. Start the car up and allow it to get warm slowly pull the cap off and "burp" the system. leave the cap off, and rev the car up, with it revved up (and t-stat open) the level within the coolant overflow tank should go down. If not, your not circulating water. Changing the water pump is a bit of a project but not horrible. Let me know if changing the t-stat helps. Even if you did change it, do it again. Also this time drill a small hole in the flat steel ring probley 1/4" hole. This will help a small amount of coolant flow, helping getting air out of the system. Thank you for using fixya.com

Posted on Oct 07, 2008

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03 nissan xterra that over heats when idling. have replace radiator, thermostat as well as all the hoses. my check ingen lightis on and the code reads knock sensor faulty. are theses two seperate problems...


First problem I will tackle is do you have a viscous fan hub on the fan connecting it to the water pump. If you do then replace it as it is not working at idle and drawing air through the radiator . IT will be spinning but if you carefully place a finger on the back of the blades you will be able to stop it very easily. This means that it is slipping and useless. T check for a blown head gasket remove the radiator cap and see if there are bubbles in the radiator or the water tends to bleach out occasionally . IF so have a compression test done to prove head gasket or cracked head. Lastly if an knock sensor is indicated by the codes have it fixed as that sensor helps in controlling the air /fuel mixture and timing to prevent detonation and engine damage. That rattling noise you hear under acceleration

Feb 21, 2014 | Cars & Trucks

1 Answer

I have a 1999 nissan frontier pickup,the temperature gauge goes hot after a minutes of driving,possible cause?


Possible causes include blown head gasket, low coolant level, blocked radiator cores, cooling fan not pulling enough air through the radiator . blocked fins in the radiator, faulty thermostat fan hub if viscous drive. brakes dragging-stuck on --. To eliminate most=== have a compression test done to check for gasket and cracked head. have a coolant pressure test done to check for coolant system problems. Do a flow test on the radiator to check for blocked cores. Check all wheels spin freely. Run fault codes to find possible fuel /injector problems that will cause over heating

Sep 13, 2013 | Cars & Trucks

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Overheating


OVERHEATING CAN BE CAUSE BY MANY THINGS LIKE FAULTY THERMOSTAT AND FAULTY RADIATOR PRESSURE CAP,TOO MUCH WATER IN COOLANT SYSTEM NEED 50 / 50 WATER AND ANTIFREEZE.LOOK FOR WATER PUMP WEEP HOLE LEAK, IF COOLANT LEAKING OUT WEEP HOLE WATER PUMP BAD NEED REPLACING.CHECK FOR LOW COOLANT LEVEL, YOUR RADIATOR OVERFLOW JUG SHOULD HAVE COOLANT AT THE FULL COLD MARK IF NOT KEEP ADDING COOLANT INTO COOLANT OVERFLOW JUG UNTIL COOLANT STOP DROPPING AND FULL COLD MARK, IF OVERFLOW COOLANT JUG WAS EMPTY RADIATOR IS LOW ON COOLANT.WHICH CAUSE AIR IN COOLANT SYSTEM KEEPING THE ENGINE COOLANT TEMPERATURE SENSOR FROM BEING SUBMERGE IN HOT COOLANT WHICH TURN ON THE COOLANT FANS.WHEN ENGINE COOLANT TEMPERATURE GET CERTAIN SET TEMPERATURE LIKE 190 DEGREES THE PCM AND COOLANT SENSOR WILL TURN ON COOLANT FANS, IF VECHICLE OVERHEATING COOLANT FANS NOT WORKING EITHER YOU HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR CHECK COOLANT FANS FUSE AND RELAYS. YOU CAN CODE SCAN CAR TO SEE IF YOU HAVE FAULTY PCM, FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR FAULTY COOLANT FAN RELAY.IF COOLANT FAN AND ENGINE COOLANT TEMPERATURE SENSOR OKAY,YOU HAVE CORRECT COOLANT LEVEL IN COOLANT SYSTEM, THERMOSTAT AND RADIATOR PRESSURE CAP BEEN REPLACED, YOU COULD HAVE BLOWN HEAD GASKET CHECK ENGINE OIL LOOKS LIKE MILK SHAKE HEAD GASKET BLOWED ALSO WHEN HEAD GASKET BLOWED YOU CAN DRIVE CAR SHORT DISTANCE START OVERHEATING AND YOU LOOSE ENGINE POWER SUSPECT BLOWED HEAD GASKET.

Aug 04, 2011 | 1999 Oldsmobile Alero

2 Answers

Car low coolant light on, over heated , fans didn't work. REPLACED: straight wired fans, fans worked. end up changing cool temp. sensor,crank cover broke replaced put in new CTC,radiator cracke,...


sounds like blown head gasket in between cylinders,that isnt supposed to push out fluid,most likely blown head gasket,check with another mechanic u trust,take car back

Jul 22, 2011 | 1997 Oldsmobile Cutlass Supreme

1 Answer

The car runs hot. the only way i can help the problem is by turning on the heat in the car, and this is the only way the fans kick on. i have replaced the thermostate, radiator cap, drain and refill...


Sounds like you may have a blown head gasket. Is your coolant level low and have you had to add coolant. Still sounds like you may have a cooling fan issue or maybe even a clogged radiator. what is the temperature difference from the inlet and the oulet of the radiatoe hoses? Anything less than 20 degrees and I would say the radiator is toast and you need a new one. And fix the cooling fan issue. But still dont rule out the blown head gasket especially if it over heated...

Jul 01, 2011 | 1996 Dodge Neon

2 Answers

Ok so here is all the history of my car. It over heated to about 260-270, guessing really, blew the radiator. Changed the radiator, car continued to overheat, I then replaced the thermostat via six months...


I think you stated the "real issue" early in your description of the problem. You most likely have blown head gaskets! Especially if it has been reaching the temperatures you are describing - if it didn't have blown head gaskets or cracked or warped heads before, it does now! With combustion gasses get into the cooling system, the coolant temperature switch for the cooling fans will not work correctly. Your radiator fan will probably never come on until the head gasket problem is repaired. If you live in an area where you need to pass an emissions inspection, you are really going to be crying the blues when it comes time for inspection. Continuing to operate the engine with a blown head gasket not only causes severe engine damage from overheating, but also destroys the oxygen sensors and catalytic converters. So you will not only have to repair the head gasket problem just to stop your engine from overheating, but you will also have to replace your O2 Sensors and Catalytic Converters as well. Even if you don't have to pass inspection, you will be using twice as much fuel as you should because of the damage to the sensors and the catalyst caused by running antifreeze down the exhaust.

It could also be that the cooling fans not operating properly is the original problem. If so, this will also have to be fixed to keep it from destroying a high-dollar head gasket repair. However, it sounds to me like the damage has already been done if you are going through that much engine coolant. Trying to fix the radiator cooling fans without repairing a head gasket problem is futile.

....OR you can do like 90% of the people out there and just continue to run it until it plain won't run any more...then you can just paint "R.I.P." on the windshield and give it a decent burial!

Jun 02, 2011 | 1993 Cadillac Seville

1 Answer

Car overheated and lost all power. how do I get it to start?


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Nov 26, 2010 | 2002 Mitsubishi Galant

3 Answers

2002 malibu runs hot.


Sounds like you have a faulty head gasket or maybe a cracked head.This can cause overheating and the check engine light to come on.The code for the o2 sensor is probably caused by coolant getting into the exhaust system and coating the sensor.The coolant fan may work but it cannot remove enough heat from the rad to make the engine cool off.Try some engine coolant stop leak to see if it will help.This maybe only a temperary fix.Let me know if you need more.MOE

Jun 22, 2010 | 2002 Chevrolet Malibu

1 Answer

Overheating


Could be head,or head gasket blown.But change the thermostat and check to see if the cooling fan comes on after it warms up.Be sure not to have ac on.Watch the temp.be sure the fan starts and runs good,and then it goes off by itself.If the fan does not come on,then check for a blown cooling fan fuse,or a bad cooling fan relay.Be sure the cooling system is full,and has no air in the cooling system.Coolant sensor could be bad also(this is what tells the ecm to turn on the relay that controls the fan.When the radiator is full,and the engine is cool,or cold,start the engine with the radiator cap off,and look to see if coolant gushes out of the radiator while the car runs.If ti does,head,or head gasket is blown.

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