Cooling fan Gold resistor and automatic gearbox

vilas66 · 17th January 2018, 04:46

Hi Folks.
I've certainly mounted in the past a gold resistor on my manual CDTi but I am aware that cars with automatic transmission have a different fan assembly.
As I will probably tomorrow collect an Automatic CDTi with the fan not working on first speed, I wonder if the problem is the same of the manual ones, I mean could be the resistor on automatics as well or I have so search elsewhere for the issue?
Thank You

MatiNitro · 17th January 2018, 06:29

If you can see resistor between fan wings, it means this same type of fan. I have CDTi with automatic gearbox and I fixed resistor last month, works perfect.

snowman · 17th January 2018, 07:19

Me to have had mine for the last four years on my auto and works ok no probs

SD1too · 17th January 2018, 08:52

Quote:

Originally Posted by vilas66

... I am aware that cars with automatic transmission have a different fan assembly.

That's not true as a general rule Canio. As far as the resistor circuit is concerned, it is the same on cars with both manual gearboxes and automatic transmission.

The one quirk is the 1.8T automatic. According to RAVE this has an additional transmission cooler fan, but the word 'Turbo' is missing from the wiring diagram leading readers to believe that all 1.8 automatics have it.

Simon

goofysth · 17th January 2018, 09:35

I have two R75, one is manual, one is auto and i fitted gold resistor to both of them. Works like a charm...

Basically, if you see the old resistor through the grill, you can refit it...

vilas66 · 17th January 2018, 12:37

Quote:

Originally Posted by SD1too

That's not true as a general rule Canio. As far as the resistor circuit is concerned, it is the same on cars with both manual gearboxes and automatic transmission.

The one quirk is the 1.8T automatic. According to RAVE this has an additional transmission cooler fan, but the word 'Turbo' is missing from the wiring diagram leading readers to believe that all 1.8 automatics have it.

Simon

Thank You Simon. I've just seen the Rimmers website and found out that they quote the same fan assembly for 1.8. T and 75 CDTi automatic with different part numbers of the ones quoted for manual cars...
and that's the doubt I had.

SD1too · 17th January 2018, 17:22

Quote:

Originally Posted by vilas66

I've just seen the Rimmers website and found out that they quote the same fan assembly for 1.8. T and 75 CDTi automatic with different part numbers ... for manual cars....

I can't find that Canio. Could you post me a link please?

Simon

vilas66 · 17th January 2018, 18:07

Rover 75/MG ZT Oil/Air Cooler - Diesel https://rimmerbros.com/Item--i-GRID001592 - Fan cowl PGF106900
Rover 75/MG ZT Fan - Diesel https://rimmerbros.com/Item--i-GRID001602 - looks like a different design and parts are split, maybe motors are the same ?
Automatics got two fan motors, one for the engine and atc and one other for the automatic transmission oil cooler; After 11 years of ownership I'm still not quite prepared on Rover 75's :-)

SD1too · 18th January 2018, 11:45

Thanks for the links Canio.

Quote:

Originally Posted by vilas66

Rover 75/MG ZT Oil/Air Cooler - Diesel https://rimmerbros.com/Item--i-GRID001592 - Fan cowl PGF106900

This is a transmission fluid/air cooler fitted on very early diesels only. It was superseeded by a fluid/engine coolant cooler. In both cases the radiator fan is the same as on a diesel with a manual gearbox, which was your original point.

Quote:

Originally Posted by vilas66

Rover 75/MG ZT Fan - Diesel https://rimmerbros.com/Item--i-GRID001602 - looks like a different design and parts are split, maybe motors are the same ?

This is the diesel radiator fan assembly; the same for both manual cars and automatics.
I don't know what you mean by "different design" and "parts are split".

Can you be more specific and I'll try to answer.

Quote:

Automatics got two fan motors, one for the engine and atc and one other for the automatic transmission oil cooler ..

No they didn't, not as a general rule.
As I've said, only the 1.8T and very early diesel automatics had separate arrangements for ATF cooling. In both cases the radiator fan assembly, with or without resistor, is no different from an equivalent manual gearbox car.

I hope that this has cleared up your original claim that cars with automatic transmission have a different fan assembly (meaning the radiator fan). They don't!

Simon

NigelOBB · 18th January 2018, 16:00

I’ve got 2 diesel Autos, both different fan types and no 2nd fan.

Sent from my iPhone using Tapatalk

17th January 2018, 04:46	#1
vilas66 Avid contributor Rover 75 CDTi Tourer, CDTi Tourer, Saloon Join Date: Sep 2007 Location: ROME Posts: 216 Thanks: 60 Thanked 32 Times in 22 Posts	Cooling fan Gold resistor and automatic gearbox Hi Folks. I've certainly mounted in the past a gold resistor on my manual CDTi but I am aware that cars with automatic transmission have a different fan assembly. As I will probably tomorrow collect an Automatic CDTi with the fan not working on first speed, I wonder if the problem is the same of the manual ones, I mean could be the resistor on automatics as well or I have so search elsewhere for the issue? Thank You __________________ Rover 75 Connoisseur Tourer (Two), Contemporary SE Saloon and (** most of all ) Wolseley 6/99 and SD1 2000 owner Regular Member**

17th January 2018, 18:07	#8
vilas66 Avid contributor Rover 75 CDTi Tourer, CDTi Tourer, Saloon Join Date: Sep 2007 Location: ROME Posts: 216 Thanks: 60 Thanked 32 Times in 22 Posts	Rover 75/MG ZT Oil/Air Cooler - Diesel https://rimmerbros.com/Item--i-GRID001592 - Fan cowl PGF106900 Rover 75/MG ZT Fan - Diesel https://rimmerbros.com/Item--i-GRID001602 - looks like a different design and parts are split, maybe motors are the same ? Automatics got two fan motors, one for the engine and atc and one other for the automatic transmission oil cooler; After 11 years of ownership I'm still not quite prepared on Rover 75's :-) __________________ Rover 75 Connoisseur Tourer (Two), Contemporary SE Saloon and (** most of all ) Wolseley 6/99 and SD1 2000 owner Regular Member** Last edited by vilas66; 17th January 2018 at 20:08..

18th January 2018, 16:00	#10
NigelOBB This is my second home 04 Rover 75 Contemporary SE - 53 Rover 75 Connoisseur -94 Mercedes W140 - 72 VW Beetle 1300 Join Date: Sep 2012 Location: Sunderland Posts: 4,767 Thanks: 1,379 Thanked 493 Times in 429 Posts	I’ve got 2 diesel Autos, both different fan types and no 2nd fan. Sent from my iPhone using Tapatalk __________________ [SIGPIC][/SIGPIC] Keep smiling - it makes people wonder what you've been up to.

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17th January 2018, 06:29	#2
MatiNitro Regular poster Rover 75 Saloon Join Date: Oct 2017 Location: London Posts: 68 Thanks: 0 Thanked 8 Times in 6 Posts	If you can see resistor between fan wings, it means this same type of fan. I have CDTi with automatic gearbox and I fixed resistor last month, works perfect.

17th January 2018, 07:19	#3
snowman Avid contributor rover 75 tourer Join Date: Nov 2010 Location: birmingham Posts: 123 Thanks: 107 Thanked 33 Times in 25 Posts	Me to have had mine for the last four years on my auto and works ok no probs

17th January 2018, 09:35	#5
goofysth Avid contributor Rover 75 Contemporary Saloon Join Date: Apr 2012 Location: Capitol Posts: 116 Thanks: 37 Thanked 10 Times in 10 Posts	I have two R75, one is manual, one is auto and i fitted gold resistor to both of them. Works like a charm... Basically, if you see the old resistor through the grill, you can refit it...