Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Chevrolet Cavalier Coolant System Issues



  • I have a 2000 Cavalier. It recently has been over heating. I have to put coolant in it every few days. Then tonight, my lights were dimming and the car was making funny noises. And when I parked, smoke was coming from the passenger side under the hood. I have no idea what it going on!
  • Thermostat is gone or water pump, have you noticed your heat gauge isn't working properally, this is most likely this problem.

    if you get underneath of it and look up on right side motor underneath is Water Pump and Left side of the Engine from looking underneath is the thermostat.
  • my 2002 cavalier 2.2l is leaking coolant on the back side of the engine on the driver side. today i noticed while driving the car's temp was going up and when i pulled over i popped the hood and some smoke was came out and a milky oil like fluid was coming out where the dip stick goes. do u have any idea on what the problem is?
  • ravelravel Posts: 1
    Ok, so, the AC (the fan) in my car seems to work, but the air coming out of it isn't very cold at all; I was wondering if there was anything I can do to make it colder? Is it also something I can do myself? The heating works, in case you're wondering.
  • sonyasuesonyasue Posts: 1
    this same thing happened to me , it was a blown head gasket
  • eddie_veddie_v Posts: 1
    Check your A/C condenser, If its bad then your AC wont work right also did you recharge it? usually when they bad or about to you get a funny smell when you turn the A/C on.
  • I have a 02 Z24 in good condition, however when I shift from 2nd to 3rd gear the car sounds and feels as if the manual transmission is slipping (high rpms and little to no power). Dose anyone have an idea what the problem could be.
  • grlztoy49grlztoy49 Posts: 1
    edited June 2012
    I added coolant to my 03 Cavalier and my overheating light is on again? Not sure what to go to next? Thermostat or how to see why the light is on and the temperature is going up again on the gauge?Please help ASAP as I have doctors appointments and need the car.
  • Put car up on ramp or jack up enough to put 5 gallon bucket underneath to collect most of the coolant as you remove the thermostat housing. Take the thermostat to cook stove, put in sauce pan fill higher than thermostat. bring to medium heat and slowly watching the candy thermometer slowly rise to 180 degree and see if the thermostat start to open. if it get to 185 plus degree and still doesn't open than it's a bad thermostat. Now remember to take it to parts store and get the same height and size. Some cheaper stat will be shorter in height causing less coolant to flow leading to hotter engine. Taller stat lead more coolant flow and less heat buildup in block and head. Put stat back in and if it still overheat-next check the water pump. I bought a use cavalier from lady who use straight tap water (RUSTED IN EXPANSION TANK) (no coolant/distill water mixture) lead to water pump fins to completely disappear and then no water flow AT ALL! LEADING TO DESTROYED HEAD GASKET AND WARP HEAD. USE DEXCOOL (ORANGE COOLANT) WITH 50/50 DISTILL WATER. NO--NO--NO---> TAP WATER--THEY HAVE MINERAL IN THEM THAT WILL DESTROY MOST OF YOUR YOUR ENGINE COMPONENT LEADING TO EARLY ENGINE FAILURE. CHEAPER TO BUY RIGHT COOLANT/DISTILL WATER THAN EXPENSIVE ENGINE OVERHAUL!!!
  • Replaced water pump and thermastat on 2002 cavalier about five months ago. Everything was fine untill about a week ago i noticed a antifreeze smell from the engine and now the coolant seems to slowly leak from somewhere again because iv had to add coolant twice in one week. Its not the head gasket and im not sure if its the water pump again. Theres a small amount of coolant on the ground about the same area it was when the water pump was leaking before. Could the pump have gone bad again already or could it be something else? Its hard to pinpoint do to its been raining for the last few days. Anyone got any ideas?
  • Did you use High temp gasket sealer (red/orange) color? take off water pump and use the gasket sealer with the gasket. Coat the pump (clean surface/no oil or residue, clean it with denature alcohol) ) side thin smooth with clean finger, add gasket to it, clean engine block where the water pump goes and apply thin film on it and then attach water pump. I usually don't use must the gasket by itself, I like to use the sealer with the gasket for LONG maintenance free job. Should last another 100,00 miles. Is your gauge more than halfway? 180 degree-190 degree is normal. You should not have to remove anything else to get to water pump usually took me 25 min to complete the job! Wait 6 hour before adding coolant. Should not have to torque it anymore than 15-20 pound with torque wrench.
  • romeo2891romeo2891 Posts: 1
    edited July 2013
    I have 2000 Cavalier 4 door with a 2.2, I just replaced the water pump and radiator inlet pipe. After getting it back from having radiator inlet was fine for a few days and now its leaking again and overheating. Today I noticed some steam or something coming from engine and I just need this roommates and I think the leak is coming from water pump, since its directly under it and it doesn't just leak a pretty much dumps it. Any advice or ideas would be helpful.
  • 1-how many miles is on the head gasket?

    2-have someone being using straight water causing massive rusting? If so then the tiny holes in the head gasket is plugging up with rust crust causing choking of coolant flowing upward thru the head gasket as the water pump is pushing the water into the lower block first. Hot coolant runs out the pipe on the left side by the serpentine belts that flows into heater core and back into the thermostat housing and back into the engine and as the temp start to get 180 degree then the thermostat opens up allowing COOL coolant to flow into water pump into the block.

    3-replaced the thermostat which the lower radiator hose runs into an inlet? THERE ARE NO THERMOSTAT ANYWHERE NEAR THE HEAD OR OUTLET HOSES.

    4-try flushing out the system by disconnecting the heater hose that runs into the thermostat housing and use jet water hose and flush it out BOTH ways to get gunk out the heater core as well, you can also do that while the engine is running with parking brakes on, wheel chock and don't anyone in the front seat while flushing. Keep flushing BOTH WAYS till you will see clear water and then rehook it up and use DEXCOOL coolant GM recommendation. 50/50
  • i just replaced water pump, thremostat, upper/lower hose, radiator,and flushed its still overheating what can be the problem
  • did you find rusty water in tank that hold coolant? Highly likely is that rust has build up around the holes in the Head Gasket that let coolant flow thru is now plugging up and restricting flow of coolant therefore letting it over heat. Take out the thermostat for now till you can get to replacing the head gasket. Even though it will run cold but the better than warping the head and having more to deal with.
  • It could also be that the heater core is plugging up. NOTE: the heater core coolant is a full time flow that mean it runs in a loop constantly from the engine back to engine and not when you want heat in the car in the winter. I know it a stupid setup!
  • To find out if the heater core is plugged up-- follow the hose coming out of the firewall that supply coolant to core and disconnect them at the closet point and use a garden hose with a taper nozzel and inject it one way and the other way next and it no or little flow mean it plugged up, it full flow after cleaning it out mean the core is not plugged up.
Sign In or Register to comment.