Thanks. I remembered where it was right after i posted. I actually have one I can test it with when I get the chance

When Temp 2 or its wiring are faulty, the LH defaults the fuelling to the normal running 80degC settings. This is too weak to start a stone cold car. Unplugging it may work if it's just the sensor that is faulty, but is there's a short on the temp 2 connector or harness you wont get the desired open circuit for a cold start.

Thanks! I plan to check it where the signal comes to the ECU.
Aren't you the ST2 guy that sold me one through the guy in Washington? His name slips my mind

Yes, Jim Corenman in WA is the worldwide agent for Sharktuners. He gives fantastic support as he is a very skilled user. I have retired from JDSPorsche, which is being now run by Mike Parris here in uk and its agents worldwide. But only Jim Sells Sharktuners:-. SharkTuner – A complete tuning system for the Porsche 928 and siriuscyber.net/sharktuner/

Mr. Merlin.....have you ever thought about offering by the hour virtual "guidance"? I would guess that you could book some serious revenue just using video conferencing...the customer would be able to use his video from his phone and you could walk him through the steps from the comfort of nice office chair. I designed a system back before the days of iphone/facetime that allowed engineers that would normally be at a well site in North Dakota, overseeing operators of a single well, to work from an office and oversee 5 wells without travel. The biggest problem we had is that the guys on the well would touch the camera lenses.....otherwise, it was awesome.

Take money, inherit liability.

Sad, but most likely true.
I'd also appreciate such a service.

I have done PP consulting events,
most will return for more advice and guidance,
this usually results in a positive outcome for the owner.
If your willing to turn the wrenches,
Its way cheaper than flying out a mechanic.

I am at a point of potentially having to find and fly a mechanic to Saudi to do service on my and 2 other 928s. It’s a tough to service this car here.

^^^ what type of work do you need?
I just got my passport renewed.
Do you have a well stocked toolbox?

The two wires to the temp II sensor were shorted together.
THanks

I have a similar situation with a 89 S4. Car wouldn't start. Finally, having read this thread shot starter fluid into the MAF and sure enough the car started and after warmup it would continue to start.

But, my adventure has taken a dark turn.

While adjusting the wires to the Temp II sensor the wires at the sender began to smoke. After I changed my shorts I pulled the melted harness connector and Temp II sensor.

This is what they look like.
https://cimg1.ibsrv.net/gimg/rennlis...d2e3bf8446.jpg
https://cimg3.ibsrv.net/gimg/rennlis...9d2e961f5c.jpg
https://cimg8.ibsrv.net/gimg/rennlis...492b61685b.jpg
https://cimg1.ibsrv.net/gimg/rennlis...a20e0cd16f.jpg

I repaired the harness connector hoping the no start condition would be fixed. No such luck.

Fearing that the LH had been damaged I tested it in another car and it worked. Whew.

That leaves me with the possibility the two harness wires are shorted in the harness.

To prove this I need to know where the two wires terminate. I looked at the LH connector layout and could not see the Temp II referenced there.

I looked in the WSM wiring diagrams and could not locate the Temp II sensor.

TIA

Can somebody point me to where the Temp II sensor is and even better where it terminates.

thats an ugly connector and sensor ,

make sure the water bridge is not powder coated otherwise you will lose the sensor signal to the computers.
make sure to remove that sealant as well ,
the sensor needs a good ground to work

NOTE posting a few pictures of your engine bay helps us help you

Terminal 13 on the LH module to ground. Should read 5000 ohm cold and almost no resistance when hot. Or so I have heard:roflmao:

NOTE that Temp 2 sensor feeds both computers with a separate signal ,
thus each pin sends a signal to the LH or the EZK. the sensor needs a good ground.
to check the sensor,
test the resistance of each pin to ground. They should match
then at the BOTH of the computer connectors,
find the temp signal pin and the ground ,
with the connector connected to the sensor the computer numbers should also repeat what you find at the sensor