Question about 1998 Dodge Neon

1 Answer

What would make the fans not come on and cool the radiator?

Posted by Anonymous on

  • perrynbecky1
    perrynbecky1 May 18, 2016

    There are several reasons an electric fan will not come on. Here is a list of checks to do in order to diagnose the problem but you will need a good test light, and or a digital volt ohm meter, you will need to locate the fuse panel either through a shop manual, or your owner's manual, or you can go looking around either under the driver's side of the dash, passenger kick panel, or most commonly found under the hood, but occasionally fuse panels are even placed behind a hidden compartment behind an access panel in the glove box.

    Once you have these things and the fuse box located, test the appropriate fuse by touching the back of the fuse to see if both metal tabs on the back light up. If only one side does, the fuse is blown. If both sides don't light up, then you have a power supply wire that is open or in some cases, corroded and unable to conduct electricity.

    If the fuse tests good, then you will need to trace the circuit to the fan relay (You will need to have a wiring diagram for this job). You will then need to test the relay to make sure that the relay has a battery feed, ignition feed, and that the ground wire coming from the PCM is not broken.

    Finally the output wire from the relay which is usually much larger than the other wires to handle the amperage, must have voltage coming out of it to the fan(s) when the relay is activated. You will want to check the plug at the fan for voltage and ground. If all these circuits test ok, then you need to replace the fan motor.

  • perrynbecky1
    perrynbecky1 May 18, 2016

    Note, there is a small fan module on Chrysler products that is located on the right side of the radiator support that is notorious for blowing out. Please add this to the equation by verifying power is going to the module. If it appears burn at the plug, replace it and the plug end, and retest the system.

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Hello Anonymous,

Before replacing the fan motor try hot wiring it to see if the motor will run. Disconnect the two wire connector at the fan motor and run two jumper wires from the battery. If you get the polarity backwards the fan will still run, just backwards... but it will answer the question of whether or not the motor is bad. If the motor runs on the hot wire setup, it's good and the problem lies somewhere else like the radiator fan relay.

This relay is located near the driver's side front wheel well. Go under the car and find the wires leading to the radiator fan on the drivers side. Trace them back and you will see they go to a waffer shaped solid state relay bolted to the car near the wheel well. It measures about 1 1/2 inches across and is about 1/4 inch thick.

Severe corrosion or heat damage to the aluminum mounting bracket may be the culprit. .

Posted on May 18, 2016

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How to Replace Engine cooling Fan on car? http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-engine-cooling-fan-on.html

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http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cooling-fan-on-acura-car.html

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  3. Disconnect the fan motor and motor connector.
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  13. Connect the automatic transaxle cooling lines to the radiator, if equipped.
  14. Connect the upper and lower radiator hoses.
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  17. Reconnect the negative battery cable. Fig. 7: Cooling system components — 1988–91 engines 86833085.gif
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  3. Disconnect the fan motor and motor connector.
  4. Disconnect the upper and lower radiator hoses.
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  6. Disconnect the coolant reservoir overflow hose.
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  10. Attach the cooling fan and shroud to the radiator and install the assembly.
  11. Attach the radiator bolts and brackets. Tighten the radiator bracket bolts to 7 ft. lbs. (10 Nm).
  12. Connect the coolant reservoir overflow hose.
  13. Connect the automatic transaxle cooling lines to the radiator, if equipped.
  14. Connect the upper and lower radiator hoses.
  15. Connect the fan motor and thermo-switch wire connector.
  16. Refill the system with the proper type and quantity of coolant, check for leaks and bleed the cooling system.
  17. Reconnect the negative battery cable. Fig. 8: Cooling system components — 1992–95 engines 86833086.gif
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  2. 10e2638.gif
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    I am having trouble with my speedometer not working occasionally and now my seat belt light is coming on sometimes too. Is this the instrument panel cluster? Or something else? 1998 Dodge Neon. Backstory is as follows: -We take very good care of it and have one dedicated mechanic. -It has only had two owners; my parents and I. -We replaced the battery 2 months ago. -Mechanic checked to make sure the speedometer sensor was working. -We have had issues with the radio for years where it will randomly turn on and off, typically brought on by a stuffed trunk OR wet weather. -The speedometer works until we hit a bump and then the needle flies up and down or sometimes just stops working all together. -Mechanic has made mention of there being some Chrysler specific battery cable that is a smaller side cable and it is not in good condition. -Currently, my problem is that I can't find an old 1998 Dodge Neon in the salvage yard because yards are doing a lot of 2002 and newer vehicles and automatically crushing the others. The meat and potatoes of my question is what direction do I go in? And what of these symptoms ties to each other? And will adding new solder to the points on the panel fix it or is it something else? I'm trying to find least expensive to most expensive options and I'm rather handy but can't drop an engine or transmission or anything so keep this in mind. My handiness ends at resoldering the pins BUT I do have a mechanic I trust, but I fear that maybe I'm not combining symptoms properly. I have the money to repair an item I KNOW is wrong but not to chicken hunt around for problems.

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