Another CDTi Cooling Fan Problem - Page 2

GBCB1986 · 27th August 2019, 07:48

Thanks for the info. I was worried it was the PCB.

No the ECM is high and dry.

Can you change a 3 speed fan motor over to a 2 speed I wonder? Save me beginning my newly fitted carbon brushes!

SD1too · 27th August 2019, 10:59

Quote:

Originally Posted by GBCB1986

Can you change a 3 speed fan motor over to a 2 speed I wonder? Save me beginning my newly fitted carbon brushes!

Why would you want to do that Graham? It wouldn't help as the diesel needs a PCB control box whether it has a 3 or 2 speed motor. With new brushes from Engineering Carbon Products your 3 speeder will give you long, reliable service.

Simon

GBCB1986 · 27th August 2019, 16:54

Oh I was under the impression that when the 2 speed fan was fitted you could do away with the PCB. I could have sworn I had seen a thread on hear which showed a 2 speed fan with no PCB fitted to a CDT.

SD1too · 27th August 2019, 19:44

Quote:

Originally Posted by GBCB1986

Oh I was under the impression that when the 2 speed fan was fitted you could do away with the PCB.

No, that's not correct I'm afraid. The PCB is needed because on the diesel the engine ECU sends fan control commands as a complicated coded signal which has to be decoded by the PCB which then activates the relays. There's no way around that I'm afraid, except to buy a petrol engined car!

Simon

GBCB1986 · 27th August 2019, 19:47

That’s it then 4.6 v8 then!!!

27th August 2019, 07:48	#11
GBCB1986 Avid contributor Ford Kuga Join Date: Dec 2016 Location: Stafford Posts: 116 Thanks: 41 Thanked 12 Times in 9 Posts	Thanks for the info. I was worried it was the PCB. No the ECM is high and dry. Can you change a 3 speed fan motor over to a 2 speed I wonder? Save me beginning my newly fitted carbon brushes!

27th August 2019, 16:54	#13
GBCB1986 Avid contributor Ford Kuga Join Date: Dec 2016 Location: Stafford Posts: 116 Thanks: 41 Thanked 12 Times in 9 Posts	Oh I was under the impression that when the 2 speed fan was fitted you could do away with the PCB. I could have sworn I had seen a thread on hear which showed a 2 speed fan with no PCB fitted to a CDT.

27th August 2019, 19:47	#15
GBCB1986 Avid contributor Ford Kuga Join Date: Dec 2016 Location: Stafford Posts: 116 Thanks: 41 Thanked 12 Times in 9 Posts	That’s it then 4.6 v8 then!!!