Coolant Loss

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10-13-2009, 10:24 PM

RDS

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Coolant Loss

Jag 2005 S Type, constantly loosing coolant, falls below min/max, fill it and hours later down again. Next day coolant all over the ground. Took to shop they diagnosed as Heater Control Valve....do the two corrolate?

I have posted here before, not familiar with how to navigate, should someone respond can you also respond to rdsliny@aol.com

Thanks so much....
confused

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10-14-2009, 06:27 AM

JOsworth

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Quote:

Originally Posted by RDS

While the S type is high tech, the same basic principles still apply. Heat for the car is still provided by hot coolant from the cooling system.... So, yes the coolant valve could cause the problem.

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10-14-2009, 07:00 AM

joycesjag

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RDS, the heater control valve is located up front passenger side of vehicle near the radiator itself. There appears to be 2 soleniods and 2 heater hoses attached. The passenger front wheel and inner wheel well will have to be removed along with the under pan to gain access.

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10-14-2009, 03:41 PM

Gessie

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RDS, I had 2 problem with coolant on my 2003 S type R

1. The overflow tank kept cracking and had to be replaced twice.

2. I had a leak behind the engine, took it to my former Jaguar dealer/repair shop and was told that it was a seal on the back of the engine. They had to drop the transmission to get to it. I have the 4.2L engine. In the end it cost me $3,200 plus since it was no longer under warranty.

Hope this does not get you scared, I hope your car is still under warranty.

Last edited by Gessie; 10-16-2009 at 01:20 PM.

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10-14-2009, 04:26 PM

danielsatur

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These cars have more hoses than my garden!

Plastic,rubber,and seals are unstable, they will age and go bad, the freeze plugs go bad, because of bad or neglected coolant.

wow! Just like the Lincoln LS, the DCCV go's bad.

YES - A new Bosh DCCV on Ebay for $115, but I would suspect a bad hose going to the DCCV.

Make sure you do a proper coolant bleed procedure for Engine block + heater core.

*The dual climate control valve (DCCV) needs tobe exercised during Winter and summer so it don't seize up.
This valve provides coolant for the heater core, so the driver and passenger have there own heat control.

Last edited by danielsatur; 10-14-2009 at 07:37 PM.

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