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1994 Dodge Caravan 3.0L: Overheating when idleing. Fine on the highway but when I stop it overheats. Radiator fan is not coming on. Checked fan (wire direct to battery) and its fine... Replaced coolant temperature switch still the fan doesn't come on.

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You problems in the cooling fan relay and why the fan is not activated verifies the terminale 85 86 one has to be positive and the other is negative the negative comes the computer...

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Overheating


If the problem is overheating on the highway, your prrboem is the radiator. Your engine produces more heat as it works under a load. sitting at an idle, it doesn't have to work. It's my opinion that the center rows of the radiator core are stopped up or severely restricted. With it using a plastic and aluminum radiator, I would only go with a new one. Out on the highway, it doesn't need the fans to cool the engine off, the movement of the car forces enough air through the radiator to keep the engine cool. Either that, or check for a badly restricted a/c condensor which will inhibit the air flow to the radiator. My choice would be the radiator.Without seeing it I can only give you my best guess. I work with a lot of Nissan's

Mar 25, 2014 | 2004 Nissan Maxima

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MY VAN IS OVERHEATING WHAT ARE THE STEPS FOR TROUBLESHOOTING


When does it overheat? At idle, or at highway speed? Is the coolant level where it should be? Overheating at idle or highway speed may be a faulty thermostat. If it overheats only at idle then it is likely a cooling fan fault. To determine if the fan is working start the engine and switch the A/C on, the fan should come on, if it does not, then you need to have the computer "scanned" to see if it can detect the reason for the fan not coming on. If the fan is switching on, then you need to have the water pump checked to see if in fact it is pumping coolant (this could also be the cause of overheating at highway speed) If you are overheating only at highway speed you may want to have the enigine checked for a blown head-gasket, or faulty radiator.

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1 Answer

My van (93 dodge caravan)over heats i have changed the thermostat, water pump,hoses and now my mechanic found a cooling fan plug thats bad and he wants me to find the plug(boyh ends) or he can sawder it...


If it overheats when stopped it may be a cooling fan issue,if it overheats on the highway it is not a cooling fan issue,as air flow is coming through the rad at highway speed.Don't bother with soldering 2 ends of a connector,just solder the wires together without the connector.Also,you do not have to have the relay for the cooling fan kept in the fuse box,it can live externally with soldered or wired connections.
Other option,just set the cooling fan to run whenever the key is on.

Sep 29, 2017 | 1993 Dodge Caravan

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96 dodge caravan to show its overheating then return to normal


air pockets in the cooling system can cause this problem. idle engine with radiator cap removed for 10 -15 min. Do not let engine overheat and make sure coolant lvl is topped off. this should bleed all air from system.

Nov 07, 2009 | 1996 Dodge Caravan

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Radiator fan will not turn on and car overheats.


Check rad fan relay & or fuse under hood in fuse/relay box on drivers side fender area. Map is on underside of cover.

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2004 Dodge Ram 3.7L Overheating


is the a/c running or not??
if it is check to be sure the auxiliary fan comes on when you turn the a/c on!!!
if thats ok then it's probably your fan clutch!!!

Jun 17, 2009 | 2004 Dodge Ram

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Radiator fans will not go on


check fuses and relay to fan, if not it, check wiring to fans.

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Did you bleed the cooling system after refilling the radiator ? to bleed the system, fill the radiator with water and coolant. Run the engine until it is at a good temperature. Then turn off the engine and look for a bleeding screw at the oulet of the thermostat housing and turn it with a screwdriver counterclock wise. The trapped air will go out and coolant will start coming out. refill the radiator and repeat until only coolant comes out and no air.be careful not to burn yourself.

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1 Answer

Overheating engine: termo guage at the middle during idle


The Temp gauge should read in the middle of the gauge at operating temperature. This is normal. The radiator fan should come on after idling (not driving) for 20 minutes. The fan should also come on when you turn on the AC. Are you experiencing overheat problems?
Please reply if you have overheating issues.

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