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 inoperable Elect.Cooling Fan?

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saltfevr



Posts : 35
Join date : 2009-11-10
Age : 66
Location : Magna, Utah

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PostSubject: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 12:09 am

1994 RMW 155K Tow Package

Don't believe my secondary, elect. cooling fan is operating? I've jumpered the elect. fan and it spins. But replaced the secondary cooling fan relay. Still no go. Drove 22 miles today with AC on, but still no fan operating while idling? Guess I need to test fuse/relay panel, then wiring and coolant temp. sensor. Any ideas? Thanks
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Nick Danger

Nick Danger

Posts : 727
Join date : 2010-03-27
Location : Albuquerque

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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 8:58 am

The secondary fan doesn't come on until the engine is quite warm. The only time I've heard it run was in June when we were driving slowly in Tuscon.

You can test it by unplugging the intake air sensor. Both fans come on and the CEL comes on.

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sherlock9c1



Posts : 2306
Join date : 2009-05-28
Location : Huntsville, AL

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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 1:41 pm

Uh Nick, don't you mean the COOLANT temperature sensor?
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phantom 309

phantom 309

Posts : 5833
Join date : 2008-12-28
Age : 111

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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 1:53 pm

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Nick
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Nick Danger

Nick Danger

Posts : 727
Join date : 2010-03-27
Location : Albuquerque

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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 7:39 pm

I don't know. I once forgot to plug in the IAT, and both fans went to full speed.

PS I just discovered shbox. Love it.
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saltfevr



Posts : 35
Join date : 2009-11-10
Age : 66
Location : Magna, Utah

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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 9:25 pm

Nick & Sherlock;

Thanks for the pics & replies! Mebbe you're correct aboout my engine wasn't warm enough? It was only 75 degrees,when I drove 22 miles. When I did the digital #8 temp. control dash test as I drove, temp. only read 127F? Dash gauge needle was only about 1/2 way.
I'll try disconnecting the ECT sensor(engine coolant Temp) which is easily shown in my Haynes Manual beneath water pump on drivers side.
Thanks guys!
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Krzdimond
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Krzdimond

Posts : 3410
Join date : 2008-11-04
Age : 54
Location : Savannah, GA

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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitimeSun Aug 08, 2010 11:12 pm

Things that make you say HMMMMMMM

You drove 22 miles and the ECC says 127*F and the dash reads 1/2?

Sumpin ain't right. Thermostat stuck open?

180* is only 1/4 on my dash, and that's after about 6 min of driving.
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PostSubject: Re: inoperable Elect.Cooling Fan?   inoperable Elect.Cooling Fan? Icon_minitime

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