nandj

Start your car, get down on yer knees and look under the sill beneath the RNS door. There you will see some pipes, one of which will terminate open ended under the car, it will have a small box midway along it. put your fingers carefully over the end of the pipe to see if there is exhaust coming out. If not, then it may be your aux heater is not working. Causes will be naff glo plug, the heater disables after 5 ignition errors. Replace plug, reset and it may fire up. If not, probably heater is us altogether or its disabled again due to lack of coolant pressure, in which case look at aux water pump.

I did, but then I sourced a new one at a good price.

OK, I stand corrected, so is it an airtube or not?

These diesel TDi engines are very efficient heatwise and produce very little residual heat for heating the cabin. That is why they are fitted with auxillary heaters to assist in giving the system a headstart heating coolant then the cabin. These heaters can fail (glowplugs etc), there are numerous threads on this issue. As you are getting heat when driving along suggests the circulation is OK. My first port of call would be to check: Aux Heater glowplugs>> Aux Heater itself >> Aux water pump.

How many miles has your vehicle done? I have been having the exact same probs and have replaced everything bar the fricken ashtray. At the mo, I have diagnosed that my AUX water pump is not working. Do a search an aux pump or "run on pump". They seems to die at 90k. I have anew one on order and hope to install this weekend.

Why cant it be cruise control> Dont TDis Fords have them? My SEAT is a TDi and has CC. To me its a CC pipe and should be going up the steering column to the CC control.

Thanks guys, lastly, do they have a fuse on the live feed? If so, where is it? N Mirez, is that company APD near you still going. Cant get thru on the number you posted. Many thanks

Hi, do these pumps stay on all the time whilst the car is in use or do they come on sporadically (if assumed to be in working order) thanks

I think, on visual exam my aux heater has had water ingress and is completely US. Doesnt start and has impacted on the heating ability of the car, naturally. My Q is: Bearing in mind this unit is on the coolant circuit, would the fact it is US deem it a "blockage " in the cooling system? Im getting overflow from the header tank on long journeys at high speed and my oil temp raises above the normal 90 deg mark. does the aux heater sit in "series", so to speak in the coolant system (in which case it could prevent flow thru) or does it sit in "parallel", therefore it not working wont prevent coolant flow? Thanks