losing temp mk 4 1.8t gti

[madmk4]

driving home today when i noticed the temp gauge had droped from 90 to 0 i stopped and switched it off left it a few minute started again and back to 90 for a few miles dropped any ideas what this could be cheers

[gtigolfthree]

Its either a fault with your gauges sender unit or a problem with your thermostat. Is your heater still hot when the gauge drops?

[madmk4]

yea it still blowing  hot and the fan still cuts in and out

[gtigolfthree]

It will be a gauge issue then, either a dodgy electrical connection or more likely a faulty sender unit.

[madmk4]

got one order getting it fitted at lunch will update later 

[mac456]

temp sender - 10mins to fit

[madmk4]

hope u can help had the car booked in at lunch to get the temp gauge sender unit changed and they had order the 2 pin unit instead of the 4 pin apparantly , going back tom mornin , anyway on the way home tonight the engine managment light came on would this temo unit cause this light to come on , cheers martin

[madmk4]

any1 ?

[T_J_G]

Post in the mk4 section. I'd replace your temp sender and thermostat with genuine VW items.

[madmk4]

all sorted replaced the temp sender from vag and engine managment light has gone out well chuffed cheers