2.1 DJ Syncro Temp sender 2 VW part no required

Post by **sonic23** » 28 Nov 2007, 12:23

Hi,
I think I've got a dodgy temp 2 sender on the thermostat. The engine is sometimes hard to start from cold. And also sometimes when it does start - the idle is very fast, but returns to normal once warmed up.... from the research I've done - all fingers seem to point at replacing the temp 2 sender.

I've got a metal Thermo Housing from a 86 DJ Syncro. It hasn't got the retaining clips to hold the 2 pin sender in that ETOS shows, rather it's a screw in type. I think this is Syncro specific?
The only part no I can find is 025 906 041 A - but this looks like it uses spring clips

Does anyone have the correct part number so I can order one.....or has anyone got a new one on the shelf that they'd want to sell?
cheers,
Rich

Post by **Ye Olde Syncrospares** » 28 Nov 2007, 13:15

go to a motor factors,very common used in lots of other stuff like vauxhalls,cj.

Post by **sonic23** » 28 Nov 2007, 14:57

thanks for that CJ.

Post by **Aidan** » 28 Nov 2007, 15:14

025 906 041
silly money but so essential, are you sure yours be kerfuffed ?

Post by **sonic23** » 28 Nov 2007, 15:37

Thanks for that part number. crikey approx £30!! but as you say - vital.

hmmm - I'm not sure how to tell if it's feckled Aidan?

Everything was fine until it refused to start last weekend from cold for a good 5 mins, now it's a bit tempermental at starting, and also idles fast until it's warmed up. Once it's warmed up it drives superbly. very responsoce etc.

I've cleaned all the contacts etc.

Post by **Hacksawbob** » 28 Nov 2007, 17:29

I am guessing to check you hold in water as it warms and check for continuity change, I'm guessing 80degs C?

Post by **Pickles** » 28 Nov 2007, 20:29

You can buy the sensor from GSF, if you trust there stuff
93494A 2 pin Blue £7.25
I believe Baxter doesnt he only buys them from VW

You can measure the resistance fixures in Haynes and Bentley

50c - 800 ohms
75c - 350 0hms
100c - 200 ohms

Post by **Aidan** » 28 Nov 2007, 22:15

yes check it for resistance at the sender, and also at the disconnected ecu to be sure, and also check throttle switch is calling up idle stabiliser as required too, worth checking before spending the money cos 9 times out of 10 it will be the wiring imhe

Post by **sonic23** » 29 Nov 2007, 09:44

thanks guys - I'll give it a go later Today hopefully
cheers,
Rich

Post by **sonic23** » 01 Dec 2007, 07:50

looks like it was the connection at temp sender .
I got the multimeter out and pins 2 and 7 at the unplugged multiconnectorshowed no resistence, whereas temp sender 1 did. I unplugged the TS2 connector and did get a reading, (approx the same as TS1 - as the engine was cold). Plugged it back in - and hey presto pins 2 and 7 at the multiconnector now have a resistence.

thanks once again guys.
Rich