vw cylinder head....coolant

[wallacen01]

hi, i have jus bought a bora 1.9 tdi, 115 6 speed remapped to 150, x reg, and as soon as i got it the coolant light was coming on, i went to my local garage and he checked the obvious faults such as thermostat and water pump, and they were ok, he said the next thing will be the cylinder head, so i got a new cylinder head fitted and new gasket set, as the one on the car had already been skimmed so could not be done again. the new head and gasket is fitted and when i drove the car 10miles or so the exact same thing is happening, water is not circulating and is presurizing up, can anyone please help me on what else this can be???? all the pipes have been checked.

[Mook]

Welcome to Tyresmoke

One of the most common problems is water pump failure - the impellors wear and eventually can't pump any more coolant round the block. Get your cambelt and tensioner changed at the same time if it's not been done yet.

[leon_h]

I've just had the same problem of only being able to travel about 4-5 miles before the temp warning light was coming on - the reason being that no water was flowing round the system. After trying a thermostat and then a radiator it turned out to be the water pump. The plastic impellor had become brittle and disconnected from the water pump shaft which meant even though the pump hadn't seized it wasn't turning the impellor and therefore not pumping any coolant (apparently a common fault). I've replaced it with an FAI pump (got mine from Carcraft in Rochdale part no. WP6128) which has a metal impellor so hopefully I won't get the same problem again.

As Mook suggested, definitely worth doing the cambelt at the same time.