Yes, I changed my thermostat too in case it was stuck open. But it didn't change anything:( Just this cooling off at tickover now. I'm wondering if, because at at tickover the pump is running slowest, and the hot water is also going to the LPG, is the LPG circuit just an easer path to take...

I have had similar symptoms when my gas vapouriser freezes up before the circulating hot water has had time to warm it up. I'm running on gas and it conks out when pulling away. Then it won't start on petrol for some reason, probaly down to the electronics. If I wait 5 minutes it starts on...

Thanks for the thoughts. I've moved on a bit, someone suggested that water was being cooled in the rad while the thermostat was closed. Then when it opens, the cold water finds its way to the heater matrix.... So I've covered half the rad with foil. Now I get heat all the time, except...

Hi I've been looking after my 94 Disco V8 for 10 years and am getting to the point where I'm needing help. The latest is with heater problems that I've spent liots of time on. I've just posted a question in http://www.landyzone.co.uk/lz/f8/discovery-heater-49343.html Cheers Chris

First post here so... Hi I too am having heater problems but with my 94 V8 (3.9i) Disco. Could this too be a head gasket/head problem? Symptoms are as follows:- From cold heater works/warms up with engine. Once up to temp, the heater periodically goes cold for varied periods. Usually...