Thread: P38 Rangie Air Con Problem ?

Ray, open the fuse box and see if the RL10 position is filled. If so, and you have a large heatsunk resistor behind the LH headlight, then it has had the air con compressor mod done.

If not, then I recommend fitting this kit. It's very easy to fit and costs under $100. It will overcome the problem of low voltage to the compressor clutch.

There is a TSB on this.

Originally Posted by Jezzaol

Thanks again,

That link would be good !

See RangeRovers.net :: View topic - heater blower motors

Originally Posted by P38ace

Jezzaol,

Unless you can get someone to check for free I would not waste any time or money on fault codes.

Apart from often being misleading as to the cause, there may be old codes stored there which were never cleared after previous work and these are going to send you off in the wrong direction.

The problem you describe is most likely one of the blowers not working. 99% of the time it is failure of blower relay 7. When this overheats and fails the book symbol comes on (but will go off again when fixed) and all appears normal but airflow from the vents drops off and becomes noisy.

Despite what you'll read on the interweb the aircon is usually simple to fix but I won't recommend anything else until you've checked this.

I'm luck in that I'm in the position of being able to read/rest the codes for free.

RL7 is a bad 'un as P38ace points out. It affects the LH blower.

Originally Posted by p38arover

Ray, open the fuse box and see if the RL10 position is filled. If so, and you have a large heatsunk resistor behind the LH headlight, then it has had the air con compressor mod done.

If not, then I recommend fitting this kit. It's very easy to fit and costs under $100. It will overcome the problem of low voltage to the compressor clutch.

There is a TSB on this.

no relay in RL10

Originally Posted by hiline

no relay in RL10

Ray, if you have the RAVE CD-ROM, look up the Technical Bulletins->Index Selection->Heating/AirCon->Range Rover->0010 Intermittent Operation of the ATC Link Harness

the kit you need is the: YMQ104590AA Kit - link harness - compressor.
The kit contains the link harness, relay, relay label, 10 amp fuse, fuse label, 2 screws and cable ties.

You might also check if you have the Alternator link harness also mentioned in this TSB. Mine had it but not the compressor link harness. If yopu don't have it, get it, too. It's not expensive. YSB106340 Link harness - alternator

If you don't have the TSB, PM me with a fax number and I'll fax it tomorrow.

my fax number is : .................

thanks Ron

thanks Ron fax received


now how do i go about getting the said fix for the wifes car ??

I ordered the kit from either Trivetts (Scouse) who are my local dealers or British Motor Imports (I can't remember which). You should be able to get it from a local dealer. It's an easy fit.

Now you have the instructions you can see if your car already has the alternator link cable. It probably does.

Oh, is your VIN prior to the no. listed on the TSB? I don't know if it is needed on later cars.

It fixed my intermittent compressor failure to switch on problems. I'd already removed the compressor shim about 4 years earlier.

The other problem is the connector to the blower motors. Do you want that TSB, too?