The car is a 1992 400E
This is the issue - Driving the car in cruise control at about 65 I lost power and the car started to slow down. I pressed the gas pedal and the engine would not respond until I depressed the pedal to the position of passing gear acceleration. At the first chance I pulled over and made the following observations. First - at a stop position engine idling normally in park no fine and slow engine acceleration till pedal at passing gear position. I could control this position to accelerate the engine. Second - Opening the hood and moving the throttle lever I got the same response. Rotating the lever 30 to 45 degrees there was no response. Bottom line I lost the fine control to smoothly accelerate. Other points - I decided to drive the car this way and I observed the following, transmission shifting was affected but shifted if I let back off the gas it would shift into the next gear. Drove this way for about 40 miles, thankfully I did not have to make many stops. The thing that made this stranger is I had to stop for gas because I had another 150 miles to go. When I got back in and started the car every thing went back to normal and I was able to use the cruise control. I know this will happen again and I got a warning something is going. The question is what and what actions can I take. I searched the archives under gas pedal response, throttle response and fine throttle response could not find this exact situation. Any help would be appreciated.

This would fall under the "Can of worms" category... (sorry)

Do a search for "wiring harness"

Do a search for throttle actuator or electronic throttle actuator (there are several names for this part. Bottom line is that the same crappy wiring used in the harness's was also used inside of these actuators.

With some luck, there ought to be some codes that you or someone, can pull from it, and give you a fault code. If you're lucky, you have the kind with the little push-button and LED and you can count the flashes and make a more educated guess than just looking at it.

Above all...Good Luck!

-Larry

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09 Jetta TDI
1985 300D

I did that search. Nothing really popped up to relate to my issue. My question is where is the throttle actuator, is it easy to remove for inspection and cleaning or get a new one?