Question about 2003 Land Rover Discovery

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My 1997 Landrover Discovery AC problem is that the system has been checked over and recharged (it was low, not empty) and works ice cold at idle (it's a diesel). However when you rev the engine the compressor stops spinning. It does this more or less from AC switch-on so I don't think it's any kind of thermal load thing on the compressor as it has only just started running. I thought at first it might be some kind of high-pressure switch thing but it did it when the system was half full and it does it when you just blip the throttle even before the engine has revved by any appreicable amount and presumably therefore still short of peak pressure? Meanwhile, if you press the accelerator slowly it can sometimes stay spinning well above idle. Therefore if it's not a pressure switch I'm wondering if it's a compressor clutch slipping problem? My AC recharge guy says his brother had a Focus with the same problem and he took a shim out of the clutch to put the magnets closer to the pulley (may have misunderstood that bit) and the car was fine afterwards. Any ideas? Pete Crespin

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I know on some cars that they do, or did incorporate an AC cut-off point when accelerating, as a safety feature, when passing, to allow for maximum horsepower at wide open throttle, due to fact that vehicle was basically underpowered, thus allowing you to have full power until you were back at cruising speed. Maybe with a little research, you'll find same situation with yours.

Posted on Jul 03, 2009

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Suggested Solution 2002 Land Rover Discovery Series II Logo Problem with 2002 Discovery Series II Starts fine when cold, after running dies on idle then wont start 2002 land rover discovery, starts fine...


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My Ac doesnt really blow that cold.I have tried recharging it and it started to click. DOes that mean its full, over full, or just the compressor going on and off? What? I want it to be cold. I did add...


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