The new fresh air intake pipe arrived. It did not fix the air leak. I cannot feel any cracks or imperfections in the throttle body opening, and I would quite like to try other things before replacing what appears to be a perfectly fine throttle body. Does anyone have any ideas for sealing this conne...

Thank you. I have ordered a new hose, with the idea that any used hose will eventually have the same issue. It is, of course, one of those parts that must be special ordered, and I do not have access to "Overnight parts from Sweden" :( I will report back once the new hose eventually arrives.

My 2001 S80 2.9L (without a turbo) was not running well, so I decided to smoke-test the intake. I removed the Engine Air Intake Hose ( Part Number: 9161391 ) from the mass airflow sensor at the point 1 in the attached image, in the black box, then put the smoke machine output in that same hose. Smok...

I had a random shutdown issue on my 2001 S80, which I traced to an intermittent connection in the circuit that turns on the ECM relay ( thread link ). The base bracket (part 9456590) holding the ECM was loose, causing the circuit to intermittently break, which turned off the relay, which killed the ...

I forgot to update this...my apologies. I think the fault was a worn plastic bracket that holds the ECM & TCM in the plastic module box and connected to the wire harness. Replacing that solved all my issues. Before I replaced the bracket, the only way to reliably make the car run was to use a ma...

First, I know the real fix is replacing the dashboard. I don't have the motivation to replace an otherwise-fine dashboard on a 24 year old car. As I am sure has happened to many before me, the plastic inside the defrost vents below the windshield in my 2001 S80 have embrittled in the sun and broken....

I learned a few things over the weekend I suspect the CEM-ECM communication datapoint is the CEM communication menu is the closest thing to an indicator that the ECM is sending signals to relays While I didn't find a way to activate the engine management relay in the Activations menu, I can turn on ...

After some more digging, the issue seems to be the car is only intermittently turning on the Engine Control Module main relay (what I had been calling the ETM relay), which sends power to the ETM and the coils. When that relay does switch on, everything works great. I pushed this question back to th...

After some more digging, the ETM seems to be perfectly fine. My current diagnosis centers on the Engine Control Module Main Relay (what I had previously called the ETM relay). The relay sends power to the ETM and coils, so it needs to click on before the engine to start. The car starts if I bypass t...

I now know there is an ETM forum, so I have posted this issue there.