i am having a problem with my heaters, i have a 1990 2.0td super extra, the front heater i warm at about 1000 rpm buts get cold if the fan is on full(stand still) or when i am travelling along, it apears tthat there is some kind of obstruction restricting the water flow through the matrix, the rear is just not having any of it, it's realy cold all the time, i have just replaced the headgasket, thermostat and temp sender ( the head was crack tested and clear), anybody have any ideas before ai go ripping it all apart
regards colin

- (#11953) COLIN, 26 Nov 03 14:03

Air locks?? give all the (especially the top hose)hoses a squeeze (when cold)with pressure cap off to see if air bubbles pop out.
Or heater valves??- visual check of valve (on heater hose)to ensure operating

- (#11954) chris turner, 26 Nov 03 18:17

The rear heater should be hot all the time, it is on a constant feed part of the bypass system. Have you fitted the correct thermostat?
Does the temp guage show normal temp?

- (#11955) Clive (Bristol), 27 Nov 03 2:58

had tthe same prob drained and re filled the system make shore when re filling that the heaters are put to the hot possition worked for me it had a air lock in the rear heater .

- (#11956) pete, 28 Nov 03 4:24