951Porschiste

This is a picture of the engine area under the intake manifold. There are two sensors labeled 1 and 2. Number 1 is towards the front of the engine and obviously number 2 is towards the rear. I know one of them is the engine temp sensor. Which one is the temp sensor and what is the other one?

NZ951

Its not the knock sensor... its further to the front of the engine... tats all I can contribute!

PorscheDoc

Front is the coolant temp sensor, i can't remember off the top of my head at the moment what the other is.

PorscheDoc

That venturi tube makes my eyes burn....make it stop make it stop!!!

951Porschiste

Are these sensors known to fail often? While I'm in there I was thinking of replacing them, but I have no idea how much of a PITA they might be or how much they cost.

PorscheDoc

If i am reading PET correctly, it says they are both temperature sensors.

dlr944

1# is the temp sensor to the DME
2# is the temp sensor to th guage cluster

Cyrus951

dlr944,

Is that temp sender to gauge cluster located in the same spot in the 89 turbos?

Any idea how much the part is? Part number?

brad-cam

Here's the info from Pelican Parts (as an example). Prices are pretty typical.

Sensor #1:

DME Temp Sensor II, 924S/944/968 All (02/85-89),
E-606-125-00 $27.00


Sensor #2:

Coolant Temperature Sender, 944/S/S2/Turbo (02/85-91), 968 (1992-95),
F-606-201-01 $39.75

hosrom_951

The sensor with the blue top is the DME Temp Sensor (otherwise known as the fuel temp sensor). The golden one is the water temp sensor for the gauge. Yes, the gauge sensor does tend to fail every now and then (the workshop manual shows how to replace them). Replace both for more accurate temp readings for the DME and the temp gauge.