2005 overheating town and country with check engine light



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Thread: 2005 overheating town and country with check engine light

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    2005 overheating town and country with check engine light

    Hello, I am new to this site and am looking for some assistance. I have a 2005 T & C with the 3.8L V6. last week the van while sitting in traffic started to overheat. I turned on the heater and was fine. After this event I got a check engine light that has stayed on. Then four days later it overheated for my wife in a similar situation while sitting in traffic.

    I checked the coolant level and it was good. I checked the fuses and relays that control the fan and they seemd ok. I did another test last night in the garage. The large two fan cooling assembly never turned on. I am thinking it is some sort of relay or temparture sensor that is not telling the auxillary cooling fans to turn on and off. Could the thermostat be going bad?

    Any ideas or suggestions on how to repair or trouble shoot? Any help would be appreciated. Thanks.

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    1 out of 1 members found this post helpful.
    You're on the right track. Have the fault codes checked with a scanner to confirm. Usually the radiator cooling fan relay is the culprit especially if the fans aren't coming on either when the engine gets hot or when you turn on the A/C. Should see a P0480 series code. Autozone will check codes for free. Not positive on the location of the relay on an 05. It's either down low on the drivers side on the frame next to the radiator or on the frame near the headlight. Follow the wire harness from the fans and you'll find it. This isn't your average relay so it's not in the relay panel (IPM). It's actually a pulse width modulated microprocessor that gets very hot. It uses the vehicle frame as a heatsink to dissipate heat. They cost anywhere from $40-$80.

    In some cases a fan motor can sieze and burn out the relay. Before changing the relay spin the fans by hand. If one turns only a time or two this may be the case. Power the fans directly to make sure they work. Jumper power to the fan connector straight off the battery or or at the relay connector.
    Last edited by RIP; 06-09-2010 at 01:12 PM.
    ******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********

    **** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****

    96 Gr Caravan LE 3.8, 206K miles
    07 Fusion / 06 RAV 4 / 06 Accord / 94 Camry

  4. The Following 4 Users Say Thank You to RIP For This Useful Post:

    DaveInColumbus (06-14-2010), FamilyGuy76 (07-25-2010), GarnerDenver (06-11-2010), tcwagner1 (06-10-2010)

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    PROBLEM FIXED!!! Thanks RIP for the information. I did some more investigating last night. I decided to take a look at where the sensor was located so I had a better idea on what I was getting into. After I removed the front drivers head light and the front grill insert, I found the sensor in front of the cross support. I also found a wire that had broken! The car was in a fender bender some time ago and repaired. I am thinking some thing came loose. I did strip back the wires, touched them together and started the car. The fans started up about 20 seconds later. I had a friend who had a scan reader and we got the same code. I did a rewire and solder on the broken wires. Cleared the code out and took for a test drive. Van cooled down with no over heat problems.
    Last edited by tmr91; 06-10-2010 at 09:17 AM. Reason: Problem fixed

  6. The Following 4 Users Say Thank You to tmr91 For This Useful Post:

    DaveInColumbus (06-14-2010), FamilyGuy76 (07-25-2010), GarnerDenver (06-11-2010), tcwagner1 (06-10-2010)

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    Some out there would have taken their van to a dealership and spent $200 or more getting this fixed. How do you like that fatter wallet? Nice feeling isn't it. Congrats!

    Oh and thanks for coming back and posting the fix.
    Last edited by RIP; 06-10-2010 at 03:24 PM.
    ******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********

    **** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****

    96 Gr Caravan LE 3.8, 206K miles
    07 Fusion / 06 RAV 4 / 06 Accord / 94 Camry

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    Way to GO ......
    You done GOOD.
    1990 Plymouth Grand Voyager LE 3.3L LWB-- 207,000 miles and counting ......
    333,134.21 kilometers, for you metric buffs ......
    For Sale - Make Offer


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