M113 - No Response to Accellerator - Thoughts? (MB Doc?) - PeachParts Mercedes-Benz Forum

DUTCH · #1 10-01-2006, 04:59 PM

So I'm driving my 2000 (preMBUSA) G500 (M113 engine) and starting to pull out from a side street into a 5 lane main drag with somewhat limited visibility to the left. I intend to pull out and turn left into the middle turn lane and move over to the main traffic lanes. As I start crossing the first lane from the left, there's an approachng car, but he's far enough away not to worry.

All of a sudden there's a speeding car passing him in the second lane, and there's only one way to clear them both: Full floor boarded accelleration with a hard left turn under accelleration into that center turn lane. Both left front and left rear tires smoked a bunch and left long black tracks with this manuever (no ESP or ETS on this one); but I made it with just inches to spare, as the speeder never slowed in the least.

I drove for another mile or so with normal driving characteristics and accellerator response. I made a turn onto a side street and at that point there was no, as in zero, response from the accellerator. I pressed it to the floor, and the engine continued to hold completely unresponsive at idle speed. It would not accellerate at all.

I let it drift to a stop and pressed on the pedal with no response. It was in gear and the engine was turning at idle speed, but it would not go. I put it in neutral and pressed on the pedal. After a few seconds, I finally got a very weak response. I put it back in gear. If I accellerated very easily, it would go. If I pressed down harder, it would not respond.

I stopped to fill up with gas and turned off the engine while I did so. After fillup and a restart, it drove normally. I put another 50 miles of normal driving - stops, go's, easy starts, fast starts, slow city drivng, interstate driving, etc - on it with no problems.

Any thoughts as to what might have happened in this no accelleration event? This engine is "fly by the wire" for the accellerator. Is this a harbinger of looming failure? Btw, no error codes were shown on the OBDII plug, but most of MB's proprietary codes aren't readable there anyway.

Thoughts? Ideas? Suggestions? MB Doc? Anyone?

TIA!!