I had the radiator replaced on my 1998 dodge grand caravan with 3.3 liter V-6 with 113,000 miles on it. The technician replaced the radiator and refilled it, when he was giving the final check-out he noticed that the fan never came on. He thought maybe a bubble of air was in the cooling system he used a special funnel and monitored the tempature with a diagonistic plug, and it read up to 217 degrees and the fan never came on. However when you turn on the A/C both fans run fine. What controls the fan when only engine tempature is envolved? Is there a fuse or relay to look for? I thought about just mounting a tempature switch on the radiator hose and tieing into the fan relay. What do you think?
Aug 27, 2007 at 3:25 PM