Water/temp Problem

[michelle]

Hi was wondering for some help if possible. We have a 2001 1.9 tdi galaxy and for some time the heaters do not blow hot air only on the very odd occasion. Also for the last couple of weeks the car has been very sluggish to start and when it does white smoke bellows out first of all then is all right but the temp gauge goes straight up to 90 as soon as the ignition is turned on. Today we have had the car at a ford garage for a diagnostics which came back with nothing that we didnt already know (back windscreen heater not working and heaters not working but no reason why). Have been looking on here and have seen it could be coolant temp sensor and/or impellor on water pump but would these not show on a diagnostics test. If it is these are they dear to buy and can the impellor be fixed without having the whole water pump replaced. Thanks :(

[chrispb123456]

Hi there

 

You haven't mentioned anything about coolant loss or overheating so hopefully no other damage has been done.

 

The water pump comes as a complete unit which will require removal of timing belt which should also be replaced.

 

Temp sensor should have come up on diagnostics but not the pump, the sensor is easy to change (remove clip and pull out) although access is awkward (behind engine under fuel pump) they are colour coded make sure you get the same.

 

You also have an electric water pump (run on pump) also check this is working, it's located on the bulkhead behind the fuel filter and you should hear it humming for about 3 minutes after switching off engine, it's job is to prevent hot spots and to aid circulation through rear compartment heater and allow booster heater to operate without overheating.

 

When you say sluggish to start are you saying the starter is turning the engine over slower than usual, or is the engine turning over normally but not firing/starting?

 

Rear screen heater is probably broken wiring in the gaiter from the body to the tailgate (common fault)

 

Very rough guide from factors

Water pump

[Peter Langton]

Hi there

 

You haven't mentioned anything about coolant loss or overheating so hopefully no other damage has been done.

 

The water pump comes as a complete unit which will require removal of timing belt which should also be replaced.

 

Temp sensor should have come up on diagnostics but not the pump, the sensor is easy to change (remove clip and pull out) although access is awkward (behind engine under fuel pump) they are colour coded make sure you get the same.

 

You also have an electric water pump (run on pump) also check this is working, it's located on the bulkhead behind the fuel filter and you should hear it humming for about 3 minutes after switching off engine, it's job is to prevent hot spots and to aid circulation through rear compartment heater and allow booster heater to operate without overheating.

 

When you say sluggish to start are you saying the starter is turning the engine over slower than usual, or is the engine turning over normally but not firing/starting?

 

Rear screen heater is probably broken wiring in the gaiter from the body to the tailgate (common fault)

 

Very rough guide from factors

Water pump

[chrispb123456]

Yes the plastic around the sensor is coloured you may have to clean it off to see it.