Post by sparkingmatt on Jul 14, 2015 2:29:26 GMT -5
So the fan never turns on and reeper is getting into the red every time I drive it. Checked all fuses under the dash, including the relays (tried from another one I have) and still can't get the fan to ever kick on. lugnut got a suggestion for that one? Lol
First use a volt/ohm meter and see if it is getting voltage to the fan wires when engine is hot and you know the fan should be on. If the red wire going to the fan motor has 12 volts plus showing and it has voltage then you have a bad fan motor. If not then here is a wiring diagram of the other wiring stuff to trouble shoot. Check all three wiring harness grounds and clean and dielectric grease the connections. You may need to add the little star washers to bite into the metal to insure a good ground at all times also. Clean off any paint under the connection of the ground.
That's better than when my fan wasn't coming on. I checked all the same stuff , checked the power to the fan, ran jumper wires from a spare battery to the fan and it worked so then i was stunned went to plug the fan back in and the plug didn't click i finally pushed hard enough to made it click together and it worked at that point i wished i would of started at that end of the circuit lol
2012 blue reeper
Eagle alloy rims
definity dakota mt 235/75/15
mbquart gmr1 radio
kicker km4 speakers
Hey folks ! Hoping to see if any one can help with cooling fan problem I have - it has constant power to the fan motor but not making contact in the relay from what signals it to come on through the neg. side of fan motor. I can take cover off relay and manually close contact and fan will come on so I think from relay to fan is well but wondering if the temp sensor can go bad or be tested . Is there a improved way to cool these things ?
Is the other two prongs on the relay getting any power while the engine is hot? What I'm saying is are you getting a hot 12v on the trigger wire? That would be on the Light Green and Black wire on the high speed relay. Check that it is energizing while the engine is hot and needs the fan to come on.
It has power when key is on not only when engine is hot @ 12volts - but if I pull relay it drops to @ 4 volts I have fuse box out of dash & swapped relays on both hi & low speed with fuel pump & ing. no change .
Something is wrong there, as with the relay out and you read 4Volts on that wire it will never turn the fan on. That should go to ground and no voltage on the wire (with the relay out) as I'm looking at the way its wired. The ECU will switch that ground and turn the fan on. No ground, No fan. Something is bleeding into that circuit from the ECU. Contact your dealer of Oreion in New Mexico and see what they say about this. Cause as I'm looking at it there shouldn't be 4Vs there.
Thanks Lugnut I had actually called them when you last replied and talked to Orieon Motors she walked me through the process of what to check . It was the connection on the engine temp.sensor - I had rechecked voltage @ relay it was 12 volts until engine warmed up and went to 0 and I heard fan come on - I wasn't sure which sensor worked what , I thought the front one worked the fan but both have there place all is well for now ! thank You ,Oreion and Matt for your help - electronics is not strong point
I'm having a similar issue with mine. I started with the fuse. It was a 30 amp and was blown, melted, and broken off. I replaced that then moved to the motor connector. After reading this I wanted to check for full seat on the connector. It was seated. Now with it running and right on the edge of the red line I checked the voltage at the supply plug to the motor. Measured .2 volts. So,I have a supply issue somewhere. Any common places to check that would cause this? Also, both the high and low speed relays are 14V 40 amp. Is that correct?