temp gauge gone abit mad?

[julie]

Hi noticed over the past couple of days my temp gauge seems to have gone abit mad was driving along for about 5mins on way home from work and noticed the gauge shoot up from 0 to 90 then it dropped back down to 0 then went to 90 and stayed there then again today it went up to 90 then when i stopped in traffic it dropped to 0 then when i started moving back to 90 any ideas?
havent had the car long and guessing its not suppose to do this.

[topher]

faulty temp sensor, about 15 quid and 10 minutes to fix

[theshrew]

Or a broken wire / bad connection

[LazyLunatic]

mine does something similar to this, do you reckon its a temp sensor? i thought it might be the wiring, but i have checked it and checked it and found nothing wrong! its got a new temp sensor, i believe its the green one. Think its a gsf jobby.

went to the dealership and having spent a long time searching and searching, we found there was two different types of green temp sensor (well two different codes) i know if its a newer version they brought out or what.

do you think maybe its a crappy gsf part thats faulty? wouldnt be the first time i have bought a new part that turned out to be faulty!

will have a chat to the vw giys and see if i can test a genuine new temp sensor to see if its the problem.

[topher]

mine does something similar to this, do you reckon its a temp sensor? i thought it might be the wiring, but i have checked it and checked it and found nothing wrong! its got a new temp sensor, i believe its the green one. Think its a gsf jobby.

went to the dealership and having spent a long time searching and searching, we found there was two different types of green temp sensor (well two different codes) i know if its a newer version they brought out or what.

do you think maybe its a crappy gsf part thats faulty? wouldnt be the first time i have bought a new part that turned out to be faulty!

will have a chat to the vw giys and see if i can test a genuine new temp sensor to see if its the problem.

i assume you're not using the mk4 dash cluster, so who knows. does the qpeng loom make use of the CTS for the ecu or is it to the gauge only? If the latter you'd need the original mk3 sensor i'd imagine.

[julie]

forgot to say car is mk4 tdi 130! do i get this from vw

[Rhyso]

forgot to say car is mk4 tdi 130! do i get this from vw

Yes 

[LazyLunatic]

mine does something similar to this, do you reckon its a temp sensor? i thought it might be the wiring, but i have checked it and checked it and found nothing wrong! its got a new temp sensor, i believe its the green one. Think its a gsf jobby.

went to the dealership and having spent a long time searching and searching, we found there was two different types of green temp sensor (well two different codes) i know if its a newer version they brought out or what.

do you think maybe its a crappy gsf part thats faulty? wouldnt be the first time i have bought a new part that turned out to be faulty!

will have a chat to the vw giys and see if i can test a genuine new temp sensor to see if its the problem.

i assume you're not using the mk4 dash cluster, so who knows. does the qpeng loom make use of the CTS for the ecu or is it to the gauge only? If the latter you'd need the original mk3 sensor i'd imagine.

the ecu uses the CTS as well as going to a gauge. qpeng said use the mk4 CTS. it has the resistor in the loom and all the wiring is good...

might be worth trying a few different genuine ones and what works.

[northeast_gti-t]

forgot to say car is mk4 tdi 130! do i get this from vw

Yes 

or trade parts specialists  best to get an o.e.m one

[jamie16v]

just a quick Q about the temp sender, does it have two thermistors? one to run the gauge and one for the ecu?.