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  • Auto Repair Advice?

    Anybody here handy when it come to auto repairs?

    I know my fair share of auto repairs, but this last one has me stumped.

    My friends' Chrysler Concorde cooling fan stopped working today, and I was unable to help fix it.

    The fan works when hooked to 12v, ruling out fan motors.

    Temperature sensor changed. Thermostat changed.

    I also replaced the fan relays to no avail. Total cost of parts was around $40, so he's a little mad that I made him buy those parts without the problem being fixed

    Anyways, any ideas?


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  • #2
    Temperature sensor, is that the same as the temperature sending unit for the fan?
    Last edited by BroncoFanNC; 04-28-2012, 10:57 PM.
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    • #3
      Originally posted by BroncoFanNC View Post
      Temperature sensor, is that the same as the temperature sending unit for the fan?
      Yes sir, it is. It's located right next to the thermostat.


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      • #4
        The only idea I have is google the problem and see what you can find. Everytime I have a problem, I google it and always find the answer.
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        • #5
          No chrysler concord forum? (I'm suprised lol)
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          • #6
            Originally posted by getlynched47 View Post
            Anybody here handy when it come to auto repairs?

            I know my fair share of auto repairs, but this last one has me stumped.

            My friends' Chrysler Concorde cooling fan stopped working today, and I was unable to help fix it.

            The fan works when hooked to 12v, ruling out fan motors.

            Temperature sensor changed. Thermostat changed.

            I also replaced the fan relays to no avail. Total cost of parts was around $40, so he's a little mad that I made him buy those parts without the problem being fixed

            Anyways, any ideas?
            I would get a volt meter and op check the wiring. Check for power to the fan, and work your way back to the relay, etc..

            The only other thing I would consider, is bypassing the relay altogether, and routing the power straight to the ignition. The fan will run constantly, but whoopdey do. I mean, it's not a show car.

            I'm sure if you trace the wiring with a volt meter, you'll find your problem though. Haynes manuals usually have wiring schematics. That would take away the guess work that goes along with removing the black plastic and electrical tape manufacturers are in love with these days.

            Another thing to do is search the internet for common cooling fan problems for a Chrysler sedan that has the same motor as his. Such as an LHS, Sebring, or Intrepid. I know they used the same fan set up on numerous models.

            OK, I'm out of gas.

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            • #7
              Originally posted by Spice 1 View Post
              I would get a volt meter and op check the wiring. Check for power to the fan, and work your way back to the relay, etc..

              The only other thing I would consider, is bypassing the relay altogether, and routing the power straight to the ignition. The fan will run constantly, but whoopdey do. I mean, it's not a show car.

              I'm sure if you trace the wiring with a volt meter, you'll find your problem though. Haynes manuals usually have wiring schematics. That would take away the guess work that goes along with removing the black plastic and electrical tape manufacturers are in love with these days.

              Another thing to do is search the internet for common cooling fan problems for a Chrysler sedan that has the same motor as his. Such as an LHS, Sebring, or Intrepid. I know they used the same fan set up on numerous models.

              OK, I'm out of gas.
              Is it difficult to route the fan straight to the ignition?

              I'll look at some electrical diagrams, but I've never bypassed a relay to fix a fan.

              It seems like a good fix, though. Any help is greatly appreciated.


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              • #8
                Originally posted by getlynched47 View Post
                Is it difficult to route the fan straight to the ignition?

                I'll look at some electrical diagrams, but I've never bypassed a relay to fix a fan.

                It seems like a good fix, though. Any help is greatly appreciated.
                Anywhere you can tap into 12vdc with the key on. Preferably w/o splicing any wires.

                Before you do that though, I would double check the fuse panel diagram to make sure the cooling fan fuses are good. There can be two different fuses sending power to two different relays. High and low fan speed.

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                • #9
                  Originally posted by Spice 1 View Post
                  Anywhere you can tap into 12vdc with the key on. Preferably w/o splicing any wires.

                  Before you do that though, I would double check the fuse panel diagram to make sure the cooling fan fuses are good. There can be two different fuses sending power to two different relays. High and low fan speed.
                  I replaced both fan relays (high and low) and also checked the fuse without any success.

                  If I bypass the relay, will I screw up the computer? I want to let my friend know whether he'll have a Check Engine light at all times if I go that route.


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                  • #10
                    Originally posted by getlynched47 View Post
                    I replaced both fan relays (high and low) and also checked the fuse without any success.

                    If I bypass the relay, will I screw up the computer? I want to let my friend know whether he'll have a Check Engine light at all times if I go that route.
                    It shouldn't effect the ECM, but I can't say for sure. I did a little looking for schematics online, and didn't find jack. I still think your best bet is to get ahold of a volt meter, and op check the circuit.

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                    • #11


                      Chrysler schematics/confusing to me lol.

                      http://images.search.yahoo.com/searc...ler+schematics

                      http://en.allexperts.com/sitesearch....air-807&sdn=en

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                      • #12
                        Probably has something to do with the car.

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                        • #13
                          Originally posted by Brancos View Post
                          Probably has something to do with the car.
                          For some reason, I doubt that.
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                          • #14
                            Originally posted by Brancos View Post
                            Probably has something to do with the car.
                            I figured it had something to do with the real tire


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                            FA Targets: DT Jason Jones, DT Pat Simms, S Reggie Smith, LB Dan Connor



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                            • #15
                              Have you gone over the wires? if you have a cut wire or a badly corroded wire relays wont matter. Also check the grounds if you have a bad ground connection you wont complete the circuit and wont get any power.
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