johnlw

Radiator Cooling Fan

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This is from a Fiesta - but may be correct as Haynes Manual is same for both.

There is also a fan relay in the internal fuse box, but should be identifiable from the sticker on the back of the glove box.

The relay in the engine is for the "high speed", bypassing the slow speed resistor

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On 6/27/2019 at 1:20 PM, Paulkp said:

This is from a Fiesta - but may be correct as Haynes Manual is same for both.

There is also a fan relay in the internal fuse box, but should be identifiable from the sticker on the back of the glove box.

The relay in the engine is for the "high speed", bypassing the slow speed resistor

Thank you so much, Paul. I haven't had access to the car for a few weeks as my son was using it, on strict instructions not to use the air conditioning. Picked it up this morning, found your post, took the cap off the relay box, started the engine, ran the air conditioning, waited until the fast fan kicked in, and then pulled relay number 2. The fast fan immediately stopped, leaving just the slow fan running, so stopped air conditioning, then stopped the engine. To my surprise the relay was hot, one of the flat metal pins at the bottom so hot I couldn't touch it when I had just pulled it. For comparison, I pulled the two other relays and they were cool. Guesing something like corrosion or heat erosion inside the relay causing it to make poor contact, and sometimes stick instead of opening. Am now about to order a replacement using the part number of that relay.

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Good to hear your progress - hopefully that will sort it.

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