Finally got a chance to look at this again. What seemed to be happening was that after starting the engine, it would idle at normal speed for a while--up to a minute, but often less--then the revs would abruptly increase. Putting the transmission in drive or reverse would bring the revs back down to a normal idle speed.
I confirmed that the linkage isn't sticking anywhere and the throttle plate isn't binding.
But after going through this sequence a few times, I noticed that the revs always started to increase when I took my foot of the brake pedal. Pressing the brake again would restore normal idle.
This is strange. Now I'm wondering if the brake booster is creating a massive vacuum leak somehow. I'm looking for a diagram of the booster to try to understand if this could be possible.
Local wrecker has 116 with a pristine piece I need. It's the front pilar with the plastic insert. I see there's a philips screw at the top end but that's it. Do I have to pop off the plastic piece to access some screws in order to get off or what?
OMG! That's funny because you just made me realize that I completely blocked out my BMW episode. LOL! I totally forgot about it. I did have one of those actually. I replaced my flooded Saabs with a 2011 BMW Convertible 135i with 55k on the odometer. It gave me nothing but problems. It was a cute little car and when it was running it was fun to drive. But it was constantly going back to the shop. The day I bought it they were "working on it" so my purchase was contingent on it being right. A few days later they delivered it to me at work and it broke down on my way home. I spent months in and out of the shop with the dealer on that car before I finally cut my losses and told them to come pick it up and just keep it. I forgot all about that. LOL! It was just a total lemon. When it did run, it was amazing. I would definitely give BMW another go if given the right opportunity.
Anyways, I am so glad to be here. I am just spending all my time searching and reading through all this forum has to offer. This is one heck of a knowledge base that ya'll have here.