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overheating problem....

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    overheating problem....

    I have a minor overheating problem....
    The car was running fine, until I would get on the freeway or something (i.e constant speed @ medium RPM) As soon as i got up to speed, it would start to cool off.... After about 5 minutes of freeway driving, the temp gauge showed completly cold. This killed my gas milage because it was running rich. So today I put a new thermostat in it. No biggie, and it all went back together perfectly.... I got to test drive it, and it is running just fine until I come to a stop light. While sitting at the light, the temp gauge started showing really hot (almost pegged). When I get the engine running faster at all, the temp drops, but as soon as i go back to idle, the temp climbs again. Anybody have any ideas as to what I did wrong to cause the overheating?

    #2
    That sounds like low coolant to me. Did you remember to refill your radiator ?

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      #3
      yep... refilled the radiator.....

      BTW: If I start it and let id idle, it warms up fine and stays that way... only overheats when sitting idle after driving!

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        #4
        make sure your fan is coming on
        bleed the little screw on the head

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          #5
          what screw on what head?

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            #6
            Left side, bleeder screw, can't miss it, bleeds the air out of your head and needs to be done anytime your radiator fluid gets low. You should invest in a cheap Haynes manual($15).

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              #7
              bleeding done.... but this never said anything about bleeding the system. Of course, I never even thought about it though either! Hopefully this will take care of the problem!
              Attached Files

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                #8
                Yeah it does say to bleed, it just doesn't use that word. I think it says to loosen that bolt and fill coolant until a steady stream comes out, then you lock the screw.

                Yeah I'd suggest on making sure your fans are coming on too.

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                  #9
                  yea... my bad! It does not say anything about bleeding the system in the part about replacing the thermostat.... it does say that in the part about replacing the radiator though! oops.... and I still need to check on the fans... first thing tomorrow.

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                    #10
                    same thing happened to me once, first things first, do the bleeding, ill almost guarantee thats your problem.

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                      #11
                      could be many reasons. save the headache and pay someone to check it.
                      1] headgasket
                      2]waterpump
                      3]the owner before you
                      etc.
                      etc.
                      etc.

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                        #12
                        Originally posted by revhighschoolin
                        could be many reasons. save the headache and pay someone to check it.
                        1] headgasket
                        2]waterpump
                        3]the owner before you
                        etc.
                        etc.
                        etc.
                        water pump would constantly over heat... headgasket would see white smoke out of the tail pipe and chances are he would be out of coolant by now, and what does the owner before him have to do with anything? as long as he keeps up with maintenece he should be good cooling system wise

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                          #13
                          Bleeding the system worked.... I just got back from a "spirited" drive, and it is running beautifully. It warmed up just fine, and stayed centered. amazing how a little air can screw stuff up.

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                            #14
                            Hey pleather. Go take some classes smart guy. If the headgasket was broke between cylinders 2 and 3 = no smoke. Seeming you personaly have had problems with previous owner fixing wrong part 4 times, you should go ... and I am glad you fixed the problem pbraile.

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                              #15
                              i have bleeded the system and on me it still does the same.

                              sorry for taking over the thread, but you already fix the problem and i haven't.

                              I already changed my waterpump thinking that would fix it and it's good on coolant.

                              Comment


                                #16
                                Originally posted by Ricoh_X
                                sorry for taking over the thread, but you already fix the problem and i haven't.
                                Its all yours.... Good luck with your problem.

                                Comment


                                  #17
                                  well ricoh, lets hear your symptoms, every problem is unique.

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                                    #18
                                    My simptons are.

                                    Drive some time on freeway and right after i get off and stop at a stop light the needle starts to rise. HOwever if i hit the RPM's the needle slowly goes back to normal.

                                    If I drive on freeway for some 20 minutes and get off it does it. But if I drive on freeway pretty far the needle sits at normal temperture.

                                    I have changed my waterpump, bleed the system, change the coolant, and have flushed it too.

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                                      #19
                                      thermostat.......

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                                        #20
                                        How old is the radiator? Did you flush the radiator backwards? Ie top to bottom. Try taking it out and flushing bottom to top.

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                                          #21
                                          youve tried all those things, and havent changed the thermostat yet? They are cheap, in price and quality, usually, so they are prone to going, Id try that next, and be sure to bleed it again after you change it.

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                                            #22
                                            Oh yeah I forgot it has also been changed, and it does work because I have observed the bottom radiator hose getting warm after a couple of minutes after warming up.

                                            Comment


                                              #23
                                              yeah, then check the rad for clogs, thats probably it.

                                              Comment


                                                #24
                                                Originally posted by revhighschoolin
                                                Hey pleather. Go take some classes smart guy. If the headgasket was broke between cylinders 2 and 3 = no smoke. Seeming you personaly have had problems with previous owner fixing wrong part 4 times, you should go ... and I am glad you fixed the problem pbraile.
                                                before you wanna say another word.. i recall you saying this
                                                Originally posted by revhighschoolin
                                                could be many reasons. save the headache and pay someone to check it.
                                                1] headgasket
                                                2]waterpump
                                                3]the owner before you
                                                etc.
                                                etc.
                                                etc..
                                                keep in mind this was all related to OVERHEATING, not running rough(all he said was he was running rich) so stop acting like a badass

                                                Comment


                                                  #25
                                                  running rich would cool the motor. Running lean makes the motor run hot.....
                                                  where does he say it runs 'rich'?

                                                  show me.....

                                                  Comment

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