SL 55 R230 - Acceleration Problem

[bonnim]

Hi Guys,

I wonder if anyone has experience this before.

After hard acceleration, if I step off the throttle for a couple of seconds and then floor it, the throttle stops responding.

Basically, the only way to get the car to respond is by pulling over and turning the engine off and restarting. I even had to physically remove the key from the ignition (usually the radio will turn off once the engine is turned off but in this case it would only turn off once the key was removed). Once I removed the key and then put it back in and switched the car on, the car was back to normal (albeit I didn't boot it again after that). I was scared that it would happen again, and although it might be psychological, it seemed to me that the car is not as responsive as it was before.

I have read similar issues on other forums where the goes into 'limp' mode. I do not believe that this is happening to me because after happening, the throttle does not respond whatsoever (whether at low RPM or high RPM).

Has anyone had this issue before? Is it a gear box problem? Or is it a failed sensor?

Any help would be greatly appreciated. Thanks!!

[bonnim]

Thank you very much for your replies gents, much appreciated.

So IC pump, throttle pedal and camshaft sensor. Are these expensive fixes and are any of these a possible diy job? Is it possible for me to identify the culprit beforehand? I had the car at a garage a few months ago and it didn’t through up any messages, although it is possible that this is a ‘new’ issue!

Cheers

[bonnim]

Thank you very much for your replies gents, much appreciated.

So IC pump, throttle pedal and camshaft sensor. Are these expensive fixes and are any of these a possible diy job? Is it possible for me to identify the culprit beforehand? I had the car at a garage a few months ago and it didn’t through up any messages, although it is possible that this is a ‘new’ issue!

Cheers

[bonnim]

Hi dapper dan,

Thanks very much for your response, and for your generousity. I live in the south east area so the midlands is a little too far for me, but thanks anyway.

I reckon I might try replacing the IC pump msyekf if it’s not too dear and seeing if that might be the problem. It’s probabky never been replaced and the car is 70k miles / 15 years old so it may well be worth doing anyway!

[bonnim]

Thanks very much mate. I had a quick look on you tube and I think it’s beyond my capabilities! I think I will leave it alone and get someone to do it for me.

Incidentally we would you install the updated Bosch part or the CM30 Johnson pump?

[bonnim]

Thanks again mate, would you happen to know the part number I’m looking for by any chance?

[bonnim]

Thanks very much mate, sounds like its this IC pumpt then!