Thanks for the information, everyone.
I was having the same problem on my 2010 Transit Connect overheating in heavy traffic and my mechanic said my fans were bad so they were replaced.
Afterwards I was still having an occasional problem with overheating in heavy traffic on a hot day here in South Florida yet the fans would run. I looked here on this forum, and I found 103west43rd instructions on where to look for the fuses for high and low speed.
I copied the post and gave it to my mechanic who found that the 50 amp fuse was indeed blown, so when the vehicle got too hot for the slow speed on the fans, they just quit working because the 50 amp fuse was blown to make the fans work on high.
Naturally the temperature gauge would then spike until I got moving again, then it would fall back into normal range.
Who knew they had two speed fans with two different fuses? It was a surprise to me (and I think a surprise to my mechanic)!
Thanks again!!!!
