Temp Guage

Any advise on the folowing would be much appreciated.
I have a 88 gti 1.8 cab and was having a problem with the led blinking occassionaly so replaced the sensor on the cylinder head.
It turned out to be the sensor on the expansion tank was causing the problem but by replacing the cylinder head sensor had created another problem as the needle now goes off the scale causing the led to blink again. it was a non genuine part so could buying a genuine part solve my problem ?.I disposed of the old sensor otherwise I would put it back on!.
Any advise would be much appreciated.

Hi baldy, those sendors can be duff, you need to test the omhz resistance on them when you gop to the place you bought it from. Not sure what it should be but someone here could test theirs, by using a multi meter and touching the base of the sensor and the top connection.

If they can test this when cold, then you can go to the shop and ask them for the box of sensors and test each one to find a good one, i know of one guy that tested around 30 from gsf and only 6 were ok  

I am having the same problem at the min mate!!  Bought a new sensor from GSFthe other day and the old one sheared off when I was removing it!!

Trying to find a good one this morning ready for going to DubFreeze tomorrow in it.

i've had a couple of GSF temp senders not work too. Both were reading way too high. I just tested the working one on my 1.3 driver which scews into the head and the resistance read 1.10 at the 20k ohms setting on multimeter when stone cold. Not sure if they're the same as the cabs so check.

i've had a couple of GSF temp senders not work too. Both were reading way too high. I just tested (as described above) the working one on my 1.3 driver which scews into the head and the resistance read 1.10 at the 20k ohms setting on multimeter when stone cold. Not sure if they're the same as the cabs so check.

Thanks to all of you who have replied,it seems as if the way to go is to get the genuine vw part  and hope it solves the problem.