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deja vu

 
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  • 2 Post By Handy_Cruiser
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Old 18 Apr 2019, 10:53 am
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Default deja vu

Wasn't I just here a year ago having cooling fan issues? Again the engine makes enough noise to make a boeing jet jealous, but the fan isn't turning. I crank it and turn on the ac, and get nothing turning in fantown. I do not have electrical skilz to diagnose it that way. No fault codes. I just had a couple times when the temp gauge creeped upward so I popped the hood and sure enough it's not turning. Any particular advice besides stay away from places where it's hot?
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Old 18 Apr 2019, 12:01 pm
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Default Re: deja vu

Forum member, Rocket1, gave a great fan diagnostic procedure at this link:

Testing cooling fan
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Old 18 Apr 2019, 02:24 pm
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Default Re: deja vu

I would suggest checking the fuses first and second I would check the ground contact on your radiator fan plug. It is very rare for both speeds to go out at the same time.

Just make sure that after engine is cold start the engine, turn on the A/C and physically check to see if the fan is turning. If not turning check fuses first if 2005 or older.

If fuses and ground contacts are good apply 12 volts to low and high speeds on radiator fan. If fan is good on both speeds check coolant temp sensor.

Post what you find out.
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Old 19 Apr 2019, 10:34 am
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Default Re: deja vu

Thank you for posting Rocket1s simplified fan test. Yesterday I did the low speed test, driving for around 15 minutes at about 30 mph, then let it idle for another 15. The fan never came on. I can see it from above and nothing. Then this morning I verified the coolant is up to the cap, drove as instructed, stopped and turned on the ac and the fan was blowing.

Last year I replaced the high speed Relay hoping that would fix it and still haven't replaced the low speed relay. I might replace that first and if that doesn't work I will install another fan.

Last edited by OldMiner; 19 Apr 2019 at 10:37 am. Reason: edited for ac kept getting removed by autocorrect
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Old 19 Apr 2019, 10:07 pm
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Default Re: deja vu

Quote:
Originally Posted by OldMiner View Post
Thank you for posting Rocket1s simplified fan test. Yesterday I did the low speed test, driving for around 15 minutes at about 30 mph, then let it idle for another 15. The fan never came on. I can see it from above and nothing. Then this morning I verified the coolant is up to the cap, drove as instructed, stopped and turned on the ac and the fan was blowing.

Last year I replaced the high speed Relay hoping that would fix it and still haven't replaced the low speed relay. I might replace that first and if that doesn't work I will install another fan.
What brand radiator fan do you have in it now?
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Old 21 Apr 2019, 10:04 am
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Default Re: deja vu

Quote:
Originally Posted by ptcruisersteve View Post
What brand radiator fan do you have in it now?
Dorman
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Old 21 Apr 2019, 12:22 pm
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Default Re: deja vu

Quote:
Originally Posted by OldMiner View Post
Dorman
Did it come with a warranty?
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