Air conditioning not working - Page 3

Russp · 12th May 2019, 20:30

Well as windscreen demist doesn't operate the fan and I've tested the relay I think the fan is at fault.
Is it basically plug and play for a swap to a two speed one?

Russp · 12th May 2019, 20:34

As an aside from this does the fan on diesel versions work much to cool the engine except in summer?
The one on my maestro diesel van never kicks in even though the system is all working correctly

HarryM1BYT · 12th May 2019, 20:52

Quote:

Originally Posted by Russp

As an aside from this does the fan on diesel versions work much to cool the engine except in summer?
The one on my maestro diesel van never kicks in even though the system is all working correctly

The diesel is very much over cooled, so unlikely the fan will ever need to run to provide increased engine cooling. The only time it usually runs, it to provide cooling for the a/c system.

Mike Trident · 12th May 2019, 20:54

I don't recall hearing my fan switch on in over 2 years of driving my diesel. They are cold-blooded to the point of fitting a Fuel burning heater for winter.

Just make sure your thermostat is working correctly. Temp gauge should get to 9pm

Russp · 12th May 2019, 20:55

Thanks for that , I'm going on a run on Wednesday and could do with the ZT as it has satnav and will hopefully sort the fan out next weekend

SD1too · 13th May 2019, 08:04

Quote:

Originally Posted by Russp

Well as windscreen demist doesn't operate the fan ...

On your 3 speed system that means that one of your motor brushes has worn to the extent that it is no longer making contact with the commutator. If you're technically minded and find a cost-effective repair attractive, you can buy a set of new brushes for about £20 from here (ignore the incorrect reference to 'heater'). These were developed with input from me and fellow club member Greeners and I have some fitted to my car.

For a pictorial fitting guide, search under club member Arctic.

Quote:

Is it basically plug and play for a swap to a two speed one?

Yes, but much more expensive and if it comes with a standard 'silver' resistor you'll need to change it to a 'gold' one for long term reliability.

By the way Russ, looking at your location and job, do you volunteer on the North Norfolk Railway?

Simon

Russp · 13th May 2019, 20:08

I've ordered a two speed fan and gold resistor.
I was a volunteer on the railway many years ago running the diesel department, but to be honest don't care much for the place these days , I prefer the mid Norfolk even though I live only a few hundred yards from the north Norfolk.
But there again just doing 25mph with a 37 isn't nowhere near as much fun as doing 90 on the mainline and getting paid for it!

12th May 2019, 20:54	#24
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	I don't recall hearing my fan switch on in over 2 years of driving my diesel. They are cold-blooded to the point of fitting a Fuel burning heater for winter. Just make sure your thermostat is working correctly. Temp gauge should get to 9pm __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

12th May 2019, 20:30	#21
Russp Loves to post MG ZT Join Date: Dec 2018 Location: holt Posts: 296 Thanks: 219 Thanked 112 Times in 49 Posts	Well as windscreen demist doesn't operate the fan and I've tested the relay I think the fan is at fault. Is it basically plug and play for a swap to a two speed one?

12th May 2019, 20:34	#22
Russp Loves to post MG ZT Join Date: Dec 2018 Location: holt Posts: 296 Thanks: 219 Thanked 112 Times in 49 Posts	As an aside from this does the fan on diesel versions work much to cool the engine except in summer? The one on my maestro diesel van never kicks in even though the system is all working correctly

12th May 2019, 20:55	#25
Russp Loves to post MG ZT Join Date: Dec 2018 Location: holt Posts: 296 Thanks: 219 Thanked 112 Times in 49 Posts	Thanks for that , I'm going on a run on Wednesday and could do with the ZT as it has satnav and will hopefully sort the fan out next weekend

13th May 2019, 20:08	#27
Russp Loves to post MG ZT Join Date: Dec 2018 Location: holt Posts: 296 Thanks: 219 Thanked 112 Times in 49 Posts	I've ordered a two speed fan and gold resistor. I was a volunteer on the railway many years ago running the diesel department, but to be honest don't care much for the place these days , I prefer the mid Norfolk even though I live only a few hundred yards from the north Norfolk. But there again just doing 25mph with a 37 isn't nowhere near as much fun as doing 90 on the mainline and getting paid for it!