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Posted on Jan 13, 2009
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The cooling fan doesnt work on my 91 honda accord

The fuse isnt blown and the switch has been changed , even when you turn the AC on it starts to over heat with in 20 to 30 mins

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  • Freddy Lewis Mar 13, 2009

    My daughters 2005 Honda Civic has a problem running hot. The cooling fans defintely work. She changed the raditor cap and Tstat 4 months ago, but problem is still there. I let it idle for 20 mins, no problem, then at the drop of a hat the temp goes to HOTT!!, turn it off and within 2 mins the  temp drops to 3/4. Same as when driving. Seems like the TStat gets stuck and won$t' allow the coolant to circulate, thens will open, then gets stuck again. We checked the oil and tail pipe and have no signs of moisture or coolant, or milky looking oil or oily residue in the coolant, which seems to eliminate a blown head gasket. 
    Your help is greatly appreciated.
    Perplexed in GA..

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Ronnie Wilson

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  • Master 1,596 Answers
  • Posted on Jan 13, 2009
Ronnie Wilson
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Joined: Jan 07, 2009
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  1. Cooling fan Relay
  2. Engine temp Sensor
  3. Cooling fan itself
  4. If While A/C is on Fan does not come on I would Check Fan By unplugging it first than apply Pos+ and Neg- to it if it comes on that's eliminated Then go to step 1-3 one of them is bad I usually replace Engine temp sensors no mater what they are Crucial components for the safety of the Engine.

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I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

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How to voltage drop test starter motor circuit

Starter Voltage Drop These test's will find any starting circuit problem .

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