Help to identify

[t4vwbugster]

Can you identify the 2 water temp sender units? I'm assuming one is for the ecu and one is for the gauge?
Measuring the resistance, I get 1.9 k on the blue one, and 0.9 k on the black one.

Which would be used as a water temp sender for an after market ecu (gotech pro using 5volt).

When I took them out, both look the same and says "12volt" with a part #.

Can you help me?
Marius

edit - forgot to add - it's from a 2.1 "CU" WBX motor.

[fastback]

The blue shold be the sensor for the stock ECU
the black for the Gauge.
either way i asme u must calibrate the sensors in the new ECU anyway?

[t4vwbugster]

That is true - calibration is needed. What was strange to me is the difference in resistance. I'm worried one might be a switch only (maybe for a fan?). You say blue is for the std ecu = that's what I'll try an' use. Thanks for the help.

[fastback]

no its not a switch, it's the sensor for the engine temp gauge.
the switch for the fan is located in the radiator

[Steve C]

Hi

I ran an after market ECU on my WBX powered 1302. I had some aluminium slugs made to fit in the hole that the stock senders fit in and tapped them to suit my ECU and temp gauge.

Steve

[51MAN]

"CU" is 2L aircooled engine code..

Senders are odd on these vehicles, you might be better fitting a more common replacement screwed in elsewhere or even just in an "inline" adapter on the hose rather than trying to make these work..

[t4vwbugster]

Hi - thanks again for everyone's help - I'm already using the blue one down the dizzy hole on an aircooled 2 liter. Motor just start with the new ecu.
http://www.shoptalkforums.com/viewtopic ... 3&t=136362

So far everything looks 100% and the low temp is picked up perfectly but I still need to run it up to like 90 degrees C.
I put it where the dizzy used to be hoping it'll get splashed with oil from the dizzy/cam gears.

Best
M