I installed a Pioneer headunit in a friends 02 996 Coupe and am having a few issues now. I grounded the alarm "clip" that normally goes on the factory cage to the radio black ground wire and connected, power, remote, ground, and speakers to the headunit (cut off the connector and spliced). The headunit works great, sound is fine and coming out of all speakers however, I have a couple issues now that arose and I am not sure why or if they are even related.

1. The car will not accept gas. I checked the fuses and that is not it.
2. The car beeps when I lock it (as if something is open). The gas door doesn't lock (but it never has and never beeped).

Any ideas? The beeping I can understand may be from something I did wrong, but not taking gas? The beeping began immediately after, the gas he didn't notice for a couple weeks, but its his first fill-up since the install...
Evan

 

the actuator on the gas... there is a pin,.... I seen my friend fix it... problem went away...

 

I just replaced the head unit in my 01 996 TT last week. There is nothing in the head unit area or Nav area that would cause a problem with fueling. I bypassed my amp though - that was just ahead of the fueling point. I didn't see any harness there that could be related to the security sensor for the gas cap, but there could be something around there. Did you have to fiddle with the amp?

 

That "ground clip" as you call it is actually a triger input to the factory alarm. You must un-ground it......unplug it from the metal plate and tape off....this will resolve the chirp when arming. That has nothing to do with gas filling, seperate issue. Search it....it has come up before,

 

Check your fuse box for any blown fuses - E6 in particular. It's possible that you accidentally blew a fuse during the installation. There is an electronic valve that might not be opening due to the blown fuse. See post #23 in the "why can't i fill my gas tank all the way up?" thread.

 

By the way. I have an aftermarket stereo in mine as well and I get the two-beep alert when arming the system. I'm not sure of the cause, but I'm guessing that the shop didn't hook something up correctly. When I get a chance I'm going to try Turbo Electro's tip about the ground clip.

 

All you have to do is to take out the headunit 10cm and put some electrical tape on the left side. Damn, my english is not good enough to explain it better.