CV7132005 Posted January 28, 2020 Share Posted January 28, 2020 Hi, I have a 2005 granite. When it is cold the fan doesn't like to shut off. It proceeds to come on and off continuesly. I took the high pressure switch out of the equation and jumped it with a jumper wire and it didn't change anything. I have replaced the fan solenoid, water temp sensor, oil temp, and the air temp sensors as well, nothing has helped. Any help would be appreciated. I'm afraid it's going to ruin the clutch seeing how its never directly ingauged. Quote Link to comment https://www.bigmacktrucks.com/topic/60739-fan-cluch-issue/ Share on other sites More sharing options...
tjc transport Posted January 28, 2020 Share Posted January 28, 2020 "replaced temp sensor" there are two temp sensors. one on the side of the engine, and one on the back of the head at the firewall. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/60739-fan-cluch-issue/#findComment-441505 Share on other sites More sharing options...
steeler Posted January 31, 2020 Share Posted January 31, 2020 On 1/28/2020 at 6:36 PM, tjc transport said: "replaced temp sensor" there are two temp sensors. one on the side of the engine, and one on the back of the head at the firewall. The one on the side is for the temp gauge. The one in the rear is for the ecu, which controls the fan. I believe he only has the one temp sensor in the rear on an 05 though. So the fan is only partially engaging? Do you have good air pressure to the solenoid? Quote Link to comment https://www.bigmacktrucks.com/topic/60739-fan-cluch-issue/#findComment-441618 Share on other sites More sharing options...
tjc transport Posted January 31, 2020 Share Posted January 31, 2020 my 05 427 had both. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/60739-fan-cluch-issue/#findComment-441635 Share on other sites More sharing options...
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