A/C was fixed now this..
The pump does run when I put 12 volts to it.
If that valve were malfunctioning, I would think there would not be cold air at all. Right? The passenger side is very cold.
Many 02 and prior HVAC modules have shorted out... It's easier to pull it out and check vs. replacing the DCCV. Considering you already had replaced your DCCV I would check that climate circuit board.
Remember, Jaguar dealerships replace with new parts. They won't troubleshoot down to a burnt track on the circuit board.
Remember, Jaguar dealerships replace with new parts. They won't troubleshoot down to a burnt track on the circuit board.
As soon as this rain gives me a break, I will pull the CM and take pictures of the circuit board and post them. Maybe I'm overlooking something.
Maybe I misunderstand the problem. Sounds to me like your gripe is that with full cold selected on both sides, you get hot air out of the driver's side vents once you increase turns above idle, while cold air continues to emanate from the passenger side vents. Once returned to idle, the driver's side begins to cool off, returning to full cold as long as you leave the engine at idle. Correct?
If so, you don't have a refrigerant circuit problem. (Cold air is produced and delivered to your pax-side vents)
You don't have a coolant circulation pump problem. (hot coolant is delivered to the appropriate section of the heater core to produced heated air at the driver's side vents)
At full cold, one task of the climate control module is to command the water valve to keep both sides closed to prevent coolant flow to the heater core. (I suspect, but not having the V-8, don't care enough to look it up - that it also commands the coolant circulation pump to "off")
The task of the water valve (DCCV) is to keep both outlets to the heater core closed as commanded by the climate control module.
Enjoy playing with your coolant pump, but make sure you reserve some time to diagnose your real problem.
If so, you don't have a refrigerant circuit problem. (Cold air is produced and delivered to your pax-side vents)
You don't have a coolant circulation pump problem. (hot coolant is delivered to the appropriate section of the heater core to produced heated air at the driver's side vents)
At full cold, one task of the climate control module is to command the water valve to keep both sides closed to prevent coolant flow to the heater core. (I suspect, but not having the V-8, don't care enough to look it up - that it also commands the coolant circulation pump to "off")
The task of the water valve (DCCV) is to keep both outlets to the heater core closed as commanded by the climate control module.
Enjoy playing with your coolant pump, but make sure you reserve some time to diagnose your real problem.
Joined: Oct 2007
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From: PHX some of the time
Clamps on the hoses will do the trick.
No, you get reduced cooling at idle and more as engine speed increases.
No, you get reduced cooling at idle and more as engine speed increases.
The a/c compressor was changed last year. I read where some of the newer units did not have that issue and some did not have that spring behind the compressor. We have had 4 days of rain, and my car is outside, so I'm still delayed for working on it. I will look at it soon as this rain breaks.
I recently had a similar no A/C at idle with my 2000 SType 3.0 and found that my battery was the issue and I found it by accident. Replaced it and all was good. Have your battery and charging system checked. Also check your cabin filter.
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Gerry755
S-Type / S type R Supercharged V8 ( X200 )
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