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A/C cutting out when engine heats

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    #1

    A/C cutting out when engine heats

    Hey guys,

    I'm having an issue with my AC. Basically, it works fine, unless the engine heats up to much. Basically, when the car warms up with the AC on (and the fan kicks in) The car will idle really low, before cutting off the AC (in order to retain proper idle?). Any ideas what could be causing this?
    "Am i crazy? Or am i so sane that i just blew your mind?"
    Tags: None
    #2
    What powers your A/C that's hooked to your engine?
    ..
    ..
    ..
    .compressor
    MRT
    37.5 MPG, AC on, cruising at 80.
    30.0 MPG, AC on, aggressively driving around 90.
    27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

    Lots of DIY videos specifically for our car

    Get some awesome wipers! <-- It's a DIY
    Originally posted by Tippey764
    I think driving your car naked will cause the engine to overheat
    Originally posted by deevergote
    sneaky motherfucker

    Comment

      #3
      when the a/c kicks on , you will have a lower idle . the compressor works on the belt system .think about it .power drainage is common.

      A man that keeps looking back can't see whats in front of him.

      Comment

        #4
        Originally posted by stretch JDM View Post
        when the a/c kicks on , you will have a lower idle . the compressor works on the belt system .think about it .power drainage is common.
        x2 i seen that on a lot of cars.. nothing wrong
        AT WEST COAST MEET

        cb7rush: who has the tongs?
        JDMxDB8: i got a thong on...



        to get to see more of my cb click the link below.
        http://www.cb7tuner.com/vbb/showthread.php?t=130922

        Comment

          #5
          Originally posted by iwork4mycb7 View Post
          x2 i seen that on a lot of cars.. nothing wrong
          Nothings wrong? So the A/C is supposed to stop working?
          "Am i crazy? Or am i so sane that i just blew your mind?"

          Comment

            #6
            When's the last time she was tuned up, had an oil change and the AC was checked by a shop? It's possible that you have a combination of conditions causing abnormally low idle when the compressor kicks in and the computer may be shutting the AC off in order to keep the engine running and/or preserve the AC system. How low are the RPMS dropping when this happens? If you manually keep the revs a little higher with the gas pedal, will the AC kick back in and start working?

            Comment

              #7
              ok, car is serviced regularly. If you are cruising, this problem doesnt occur. The real issue is that it will cut out at traffic light etc whilst idling. Once you start cruising again ac will kick back in
              "Am i crazy? Or am i so sane that i just blew your mind?"

              Comment

                #8
                Does anything else cut out like any interior lights dimming?
                94 UK Accord*Weapon-R Intake*Apexi Exhaust*2 JL Audio 10W0s

                Comment

                  #9
                  Originally posted by accordvince View Post
                  Nothings wrong? So the A/C is supposed to stop working?
                  Lol, something is wrong.....so, your first statement. " I'm having an issue with my AC. Basically, it works fine, unless the engine heats up to much".

                  The ECU won't energize the clutch relay if the car thinks its too warm. Demand for engine cooling trumps AC.
                  Also, if the car is idling really low before cutting off AC, you have bigger problems. The cars strategy to deal with AC is: You turn on A/C, the ECU enrichens the fuel misture for smooth transition, then fires then a/c compressor relay. You idle is also slightly higher with A/C on...not the other way around. Take the car to a mechanic for a full once over.

                  Comment

                    #10
                    Originally posted by spillagecars View Post
                    Lol, something is wrong.....so, your first statement. " I'm having an issue with my AC. Basically, it works fine, unless the engine heats up to much".
                    I did realise this, was being sarcastic, but yeah, might just have to take it to a mechanic
                    "Am i crazy? Or am i so sane that i just blew your mind?"

                    Comment

                      #11
                      Originally posted by GeoffMisiak View Post
                      What powers your A/C that's hooked to your engine?
                      ..
                      ..
                      ..
                      .compressor
                      How is this helpful?
                      "Am i crazy? Or am i so sane that i just blew your mind?"

                      Comment

                        #12
                        Originally posted by accordvince View Post
                        How is this helpful?
                        Helping the op think out his problem.
                        MRT
                        37.5 MPG, AC on, cruising at 80.
                        30.0 MPG, AC on, aggressively driving around 90.
                        27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

                        Lots of DIY videos specifically for our car

                        Get some awesome wipers! <-- It's a DIY
                        Originally posted by Tippey764
                        I think driving your car naked will cause the engine to overheat
                        Originally posted by deevergote
                        sneaky motherfucker

                        Comment

                          #13
                          Originally posted by GeoffMisiak View Post
                          Helping the op think out his problem.
                          Thankyou for the brilliant insight
                          "Am i crazy? Or am i so sane that i just blew your mind?"

                          Comment

                            #14
                            Have a mech check it out. When its summer here were I live i put my AC on and it does drain some HP on the motor. I'm not sure if its normal.
                            MY MRT
                            http://www.cb7tuner.com/vbb/showthread.php?t=178936

                            Comment

                              #15
                              Originally posted by accordvince View Post
                              Thankyou for the brilliant insight
                              Always happy to help!
                              MRT
                              37.5 MPG, AC on, cruising at 80.
                              30.0 MPG, AC on, aggressively driving around 90.
                              27.5 MPG, no AC, cruising at 90 with occasional gridlock. 40 degrees Fahrenheit

                              Lots of DIY videos specifically for our car

                              Get some awesome wipers! <-- It's a DIY
                              Originally posted by Tippey764
                              I think driving your car naked will cause the engine to overheat
                              Originally posted by deevergote
                              sneaky motherfucker

                              Comment

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