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  • Temp gage close to red

    Last week I had a remanufactured kzn130 enging fitted , along with a new rad and water pump, Today I have have temp problems. At speeds upto 70 temp gage is fine and sits bang in the middle, push it any further ( or uphill ) it heats up and goes right upto the start of the red. Come of throttle again and it soon lowers again. Checked coolant and thats ok and air filter is also new ??
    I also had the aircon recharged yesterday and at slow speeds upto 50 mph its nice and cool , but again pushed any further the air is quite warm ??

    Puzzled any help or advice would be magic
    Everywhere I go .... Im there

  • #2
    Coincidence?

    Was just going to post something similar...

    Today coming home had the air con on full blast... travelling at approx 50 mph for most of journey, towing a big trailer.
    Slowed down off A Road, and turned into my estate, then noticed air con had stopped being cold and temp guage had crossed the middle...
    stopped outside my house and let engine tick over for a while. Air con came back and temp guage went back to normal.
    So, how are air con and engine temp related?!?!?!?
    Also going to have to look at my (additional) cooling system methinks...
    "B.A." Baracus: "Talk to me, talk sense so I can talk back. Not all this jibberjabber like breaking the peace and all that."
    www.johnthebuilder.info

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    • #3
      Originally posted by Wolfracer View Post
      Was just going to post something similar...

      Today coming home had the air con on full blast... travelling at approx 50 mph for most of journey, towing a big trailer.
      Slowed down off A Road, and turned into my estate, then noticed air con had stopped being cold and temp guage had crossed the middle...
      stopped outside my house and let engine tick over for a while. Air con came back and temp guage went back to normal.
      So, how are air con and engine temp related?!?!?!?
      Also going to have to look at my (additional) cooling system methinks...
      Isn't there a lock out to kill the air con when the engine gets too hot?
      Eat.Sleep.Surf.Repeat.

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      • #4
        Originally posted by shokenore View Post
        Isn't there a lock out to kill the air con when the engine gets too hot?

        I did think that that could be what happened , A thermostat of some kind but dunno
        Everywhere I go .... Im there

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        • #5
          Originally posted by shokenore View Post
          Isn't there a lock out to kill the air con when the engine gets too hot?
          Never read about that before, but if there is, mine is working!

          Time for a coolant system review.
          The only thing I can't get my head around is that I was taking it easy coming back, so wasn't really stressing the ATF...
          Hmmm....
          "B.A." Baracus: "Talk to me, talk sense so I can talk back. Not all this jibberjabber like breaking the peace and all that."
          www.johnthebuilder.info

          Comment


          • #6
            Originally posted by Wolfracer View Post
            Never read about that before, but if there is, mine is working!

            Time for a coolant system review.
            The only thing I can't get my head around is that I was taking it easy coming back, so wasn't really stressing the ATF...
            Hmmm....
            Make sure you got all of Salisbury plain out of the rad first, then have a search for ATF cooler
            Eat.Sleep.Surf.Repeat.

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            • #7
              Originally posted by shokenore View Post
              Make sure you got all of Salisbury plain out of the rad first, then have a search for ATF cooler
              Weirdly, considering the stickiness of the stuff at the time, there wasnt that much welded in, but yes, will give it a gently wash down again, just to be sure.

              Anyone know if veggie oil has any adverse effect vs pure deisel?
              "B.A." Baracus: "Talk to me, talk sense so I can talk back. Not all this jibberjabber like breaking the peace and all that."
              www.johnthebuilder.info

              Comment


              • #8
                Dont get too hung up on the ATF. Its my experience that the ATF does not contribute to overheating jacket water. What you need is a fully functional viscous fan a clean radiator and a good water pump. A radiator needs to be clean on the inside too.
                Сви можемо

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                • #9
                  My overheating issues seem to be ATF related. ATF temperature light comes on first, then the engine temperature goes high.

                  My entire cooling system is new.
                  Do you know that, with a 50 character limit, it's

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                  • #10
                    Originally posted by Albannach View Post
                    My overheating issues seem to be ATF related. ATF temperature light comes on first, then the engine temperature goes high.

                    My entire cooling system is new.
                    Well I suppose that depends on the temperatures at which these alarms trigger, but this doesnt make the temp issue ATF related as far as I can see. If youve got the standard set up, the overheated jacket water could be heating up the ATF. Somebody who could be bothered and who knew all system pressures and pumping rates could work it out, but Id say that the circulation rate of ATF is way less than the circ rate of jacket water, so my little brain is saying that jacket water is going to have a greater effect on ATF than vice versa.
                    Im sure you understand how it all works better than me anyway.
                    Сви можемо

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                    • #11
                      Nah, I just know about steam and hydrocarbons. This vehicular stuff is all magic to me.

                      But, I will say, I had no overheating issues until I had the gearbox reconditioned last year. Since then, the head has gone, I can't tow 750kg and I can't drive from Falkirk To Edinburgh, at 70mph, on the motorway without the AT Temp light coming on.

                      To me, that suggests a gearbox issue? Indeed, I reckon overheating gearboxes are a bigger issue than we think.
                      Do you know that, with a 50 character limit, it's

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                      • #12
                        Originally posted by Albannach View Post
                        Nah, I just know about steam and hydrocarbons. This vehicular stuff is all magic to me.

                        But, I will say, I had no overheating issues until I had the gearbox reconditioned last year. Since then, the head has gone, I can't tow 750kg and I can't drive from Falkirk To Edinburgh, at 70mph, on the motorway without the AT Temp light coming on.

                        To me, that suggests a gearbox issue? Indeed, I reckon overheating gearboxes are a bigger issue than we think.
                        Can you pull away from a standstill quickly or does the gearbox feel like it's slipping?
                        Could be that the clutch bands aren't tight enough or the torque converter isn't 'locking up'. Either would cause the ATF to get hot quickly.

                        Comment


                        • #13
                          Originally posted by MIleshighhopes View Post
                          Last week I had a remanufactured kzn130 enging fitted , along with a new rad and water pump, Today I have have temp problems. At speeds upto 70 temp gage is fine and sits bang in the middle, push it any further ( or uphill ) it heats up and goes right upto the start of the red. Come of throttle again and it soon lowers again. Checked coolant and thats ok and air filter is also new ??
                          I also had the aircon recharged yesterday and at slow speeds upto 50 mph its nice and cool , but again pushed any further the air is quite warm ??

                          Puzzled any help or advice would be magic

                          Remove the rubber splash guards from under the wheel arches, they keep mud and crud off the engine but also keep engine heat in.

                          Or, cut a couple of vents (one either side) into the bonnet halfway between the front edge and windscreen, they will help airflow through the radiator at speed.

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                          • #14
                            Originally posted by Albannach View Post
                            To me, that suggests a gearbox issue? Indeed, I reckon overheating gearboxes are a bigger issue than we think.
                            Not going to argue that, but I still cant get my head around the idea, that ATF heat can make a significant difference to engine heat. No matter how hot the ATF gets, I cant see enough heat transfer from that totty wee exchanger in the bottom of the rad taking place to make much difference.
                            Сви можемо

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                            • #15
                              Originally posted by BUSHWHACKER View Post
                              Remove the rubber splash guards from under the wheel arches, they keep mud and crud off the engine but also keep engine heat in.

                              Or, cut a couple of vents (one either side) into the bonnet halfway between the front edge and windscreen, they will help airflow through the radiator at speed.
                              I have removed the guards already and was consideing putting a couple of scoops on there , I did not have these problems before changing the block.
                              gonna check the rad this savvo make sure no airlock in there .....
                              its like a never ending job having a surf lol
                              Everywhere I go .... Im there

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