Engine Cooling Fan Top Speed Won't Go Off

[markwilliams]

got a 4x4 turbo and the forth fan speed will not go off, have traced it back to relay four in the engine bay box. there is a 12v feed to the coil of the relay but i can't find where it is feed is comming from. took it into vauxhall but they trryed telling me that the fan was faulty witch is working fine, you would have thought that the manufactures would be the people to ask wouldent you?

as a tempory solution i have pulled the relay out:?

[DaveQ]

<!--quoteo--><div class='quotetop'></div><div class='quotemain'><!--quotec-->you would have thought that the manufactures would be the people to ask wouldent you?<!--QuoteEnd--></div><!--QuoteEEnd--> err no

Is the earth there as well? It could be a sticking relay...or faulty switch. You are talking about the internal fan as opposed to the rad fan?

Dave

[markwilliams]

its the rad fan. there are two fans one eather side of the radiator and it is the engine bay fan that does not go off. have put a tester across the coil and there is 12v. Checked the relay and it works fine. have tryed pulling the plugs out on both thermostats on the rad.