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Old 02-22-2014, 04:36 PM   #1
tonypa
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2001 ford focus zx3. Problem.HELP PLEASE.

My ford focus is overheating. It burns the radiator fan relay twice. I had to change it. There was a hairline leak on top of the radiator pipe and another one in the bottom one. I changed it. For some reason the radiator fan does not stop running even after i stop the car and take out the keys.

i have taken it to three mechanics. They do not know what the problem is.

Please Help.


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Old 02-22-2014, 05:37 PM   #2
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Has anyone checked the thermostat...?
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Old 02-22-2014, 05:51 PM   #3
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If the fans don't shut off, the contacts in the relays are possibly welded closed.

There are cooling fan relay(s) and the power hold relay, check all. The cooling fan relays shouldn't even have power to them unless the power hold relay is closed.

Find new mechanics, I can't imagine where you are going for work where zero for three "mechanics" couldn't find and fix this problem.
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Old 02-22-2014, 05:56 PM   #4
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Has anyone checked the Fan Resistor/connector for the resistor?

Problems there are the most common overheat cause, when hot enough fan should continue to run after turning off the car until it cools.
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Old 02-22-2014, 06:29 PM   #5
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Quote:
Originally Posted by sailor View Post
Has anyone checked the Fan Resistor/connector for the resistor?

Problems there are the most common overheat cause, when hot enough fan should continue to run after turning off the car until it cools.
Does your non-SVT Focus' fan run after the key is off?
Mine doesn't.

Looking at the wiring diagram, it doesn't appear that it should.
The cooling fan relay gets it's power for it's coil through the power hold relay, which is fed from the on/run/start position of the ign switch.
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Old 02-22-2014, 06:36 PM   #6
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There are two cooling fan relays...one for high speed operation, and one for low speed. Both relays go direct to power. The power hold relay is not involved. The low speed fan resistor would not cause this either.
F2 (30A) is for low speed operation. F6 (50A) is for high speed. Pull the fuses one at a time and determine which circuit is faulty. Go from there...

Meant to say power hold relay is not involved unless relay is energized.

Last edited by FocusKnot; 02-22-2014 at 06:38 PM. Reason: Correction
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Old 02-22-2014, 07:13 PM   #7
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Hmm, maybe not on the after run. Been so long since it's been warm... So many cars do this I was making an assumption & you know where that leads you (grin).

Mainly thinking on reasons for overheat & repeated relay failure. Only high speed working is such a common issue..
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Old 02-23-2014, 03:08 PM   #8
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I had a car that would keep the fan on for awhile after the car was off if it was hot enough. Usually shut off after like two minutes
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Old 02-24-2014, 09:53 PM   #9
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guys thank you for all your help. This is the first focus i had ever owned and i love this car. I wish someone would suggest a good mechanic who can solve this problem. I am debating to take this to the dealer. They charge an arm and a leg to even diagnose the problem. I think it is the resistor that is being welded since it got too hot and it is causing an arc and making the radiator relay fuse burnt.

What do you guys think?

Thanky you again.
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Old 02-24-2014, 09:53 PM   #10
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The thermostat seems fine.

Thank you for your attention.
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