Spyerx

So my exhaust flaps have had the vacuum lines plugged and side mufflers removed for like 2 years. The solenoid is plugged in. In theory it shouldn't know if the solenoids are there are not. Lines are simply plugged...

Anyway, pulled DME codes today and these 2 popped up - these haven't been there in the past:
P1682 - Output stage exhaust flap control/exh flap press. sensory
P1043 - Exhaust flap control final stage

Any theories? Of course car is running fine. I can just unplug the solenoid, I'm not using it... but want to ensure there aren't other issues at hand.

Spyerx

Bueller, anyone, bueller??

Fisher

Your fault codes could be caused by a problem with the signal sent to the switch.

You could check if 12V is being sent to the vacuum switch. I believe the 12V is sent to close the valves. Could be the other way though.

Hook up a DVM to the wires at the switch and see if turning on the Sport button changes the voltage.

Not sure about the exhaust flap pressure sensor, unless there is a problem with that part of the vacuum system being unable to hold a vacuum. Check for leaks in the vacuum line. Also check the device that provides vacuum, whatever and where ever that is.

Spyerx

^^^^^ winner winner. But what caused the signal issue....

Updating in this thread later today. The answer will shock and amaze. And for me pissed me off. Lol

https://rennlist.com/forums/997-gt2-...e-antique.html

eyedi27

Spyerx

so have you ever found what caused your codes? I think I am in the same boat as you, before I drop my engine to replace my oil pressure sensor, I would like to check if my exhaust sensor is causing the issue.

Spyerx

It was the solenoid. I had to do same BTW, dropping motor for a oil sensor sucks!!!

eyedi27

So what I am reading is...it was unnecessary engine drop
Anyhow thanks to your previous experience I have told my mechanics to check the exhaust flap solenoid before we drop the engine. Thank you

Spyerx

well, dropping motor to replace the oil pressure sender (which I had fail on my car, one of a very few mechanical issues and I drive it HARD) does require a motor drop. Well, you can get to it if you remove the entire top side of the motor in the car, but it's just not worth doing that there is no real time savings if you have the ability to drop the motor.

exhaust valve is easily accessible to replace, right there under the decklid.