Hello, everyone I'm after some help and advice. I have a 1999 TD5 which has an issue with the heating. The problem is when you become stationary you lose the heat which is blowing out? The temperature gauge was as shown in Photo6 and when I was motoring along it was pumping out some lovely heat but as soon as I ease off the gas it starts to go cold? When stationary I revved the engine and held it at about 4000 RPM and the heat started to come through again so I’m confused to what the issue is? Under the bonnet I have noticed the heater unit is leaking air out the side through a small crack so not sure if this has anything to do with it. Photo 5 attached. Can anyone help please?
