If your aceleration problem returns (I really doubt it was the adaptive programing) there is another common problem on the 208's. It is failure of the Pedal Position Sensor (PPS) which tells the throttle body how much gas you are asking for. This car is drive by wire meaning there is no mechanical link between the accelerator pedal and the throttle. Mine did the same thing you described on ur first post but it would always reset on restart. I took it to my shop and the guy read the codes (IMPORTANT) which indicated the PPS. This part is about $135 from KOPerformance and takes maybe 10 minutes to install. Sooo if ur problem comes back, mine was intermitant with sometimes months passing between episodes until I learned how to "make" it happen, you will want to get those codes read.
If your aceleration problem returns (I really doubt it was the adaptive programing) there is another common problem on the 208's. It is failure of the Pedal Position Sensor (PPS) which tells the throttle body how much gas you are asking for. This car is drive by wire meaning there is no mechanical link between the accelerator pedal and the throttle. Mine did the same thing you described on ur first post but it would always reset on restart. I took it to my shop and the guy read the codes (IMPORTANT) which indicated the PPS. This part is about $135 from KOPerformance and takes maybe 10 minutes to install. Sooo if ur problem comes back, mine was intermitant with sometimes months passing between episodes until I learned how to "make" it happen, you will want to get those codes read.
Cool. Good looking out. I'll be sure to look into the things you said. Is it true that the best/cheapest place to have my CLK's codes read is at "AUTOZONE"? LoL. everyone's been telling me... yeah, just go to autozone, you wouldn't want to pay for the same thing at the dealer.
I've been meaning to try the Autozone thing. My independant mechanic charges me $75 to read codes. I want him to stay in business when I need his expertise but come on, $75 to plug in and read a code! Anyway, try the Autozone thing and let me know how that goes. My fear would be that they have the wrong key for the codes or there are multiple codes that offset or are somwhow related and you don't really get any help.
If your aceleration problem returns (I really doubt it was the adaptive programing) there is another common problem on the 208's. It is failure of the Pedal Position Sensor (PPS) which tells the throttle body how much gas you are asking for. This car is drive by wire meaning there is no mechanical link between the accelerator pedal and the throttle. Mine did the same thing you described on ur first post but it would always reset on restart. I took it to my shop and the guy read the codes (IMPORTANT) which indicated the PPS. This part is about $135 from KOPerformance and takes maybe 10 minutes to install. Sooo if ur problem comes back, mine was intermitant with sometimes months passing between episodes until I learned how to "make" it happen, you will want to get those codes read.
Bro! i think you might be right. the gas pedal problem happened again. When i first drove off in the morning, it was fine. but when i left the car and got back in. it happened. can you give me more info on your suggestion and what i should try to do. thanks.
What did you mean when you said that you learned how to "MAKE" it happen? Why does it do that anyways? What i do notice is that it HAPPENS only when i FLOOR IT. i had to floor it to jumped into a faster lane, but DANGEROUSLY... the car lagged, and there was a car speeding right behind me. this thing is dangerous.
and oh. another thing, i went to autozone today to check it out, cause out of nowhere my "check engine light" came on. i don't know why. so i used their code reader, and it said error, i tried it twice and gave up. so after going somewhere and getting back in the car. the "C.E.L." disappeared? Any suggestions on that?
Last edited by babyboigsxr : 02-24-2008 at 12:31 AM.
it will randomly do this... ill be driving and if i press the gas to hard, or slow down or something triggers it ( its sparatic)
the RPM will go to the RED area... 7000rpm
and the car will just roll... like i was going down hill with no gas... it will not respond to me pressing the pedal.
is there any way to fix/solve this problem? i personally think that it's dangerous cause on the freeway, there are times when i need to pull out of a lane quickly. and out of nowhere. i'm screwed, the car behind me is coming in fast. and my car is BARELY moving.
it will randomly do this... ill be driving and if i press the gas to hard, or slow down or something triggers it ( its sparatic)
the RPM will go to the RED area... 7000rpm
and the car will just roll... like i was going down hill with no gas... it will not respond to me pressing the pedal.
Hi mate.
I'm no expert but this is what I can deduce from what you're saying:
You're driving along normally (on a freeway, for example) and then you put your foot down. You car will know that you are wanting to go faster and takes steps to change down a gear. It is at this point that it sounds like your car is having difficulty in changing from one gear to another. The high revs that are produced at this point suggests to me that it is not quite shifting to the lower gear - leaving it in a "neutral" state hence the high revs.
Like I say, I'm not an expert on this type of thing but it sounds quite serious - I'm guessing transmission mounts/ transmission alignment, needing the transmission fluid checked/ changed or other transmission related issues.
Hope this has been of some use but I reckon a veteran on this forum may be able to help more. Obvious thing would be to take it to a MB workshop.
Hope it all works out.
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Hi mate.
I'm no expert but this is what I can deduce from what you're saying:
You're driving along normally (on a freeway, for example) and then you put your foot down. You car will know that you are wanting to go faster and takes steps to change down a gear. It is at this point that it sounds like your car is having difficulty in changing from one gear to another. The high revs that are produced at this point suggests to me that it is not quite shifting to the lower gear - leaving it in a "neutral" state hence the high revs.
Like I say, I'm not an expert on this type of thing but it sounds quite serious - I'm guessing transmission mounts/ transmission alignment, needing the transmission fluid checked/ changed or other transmission related issues.
Hope this has been of some use but I reckon a veteran on this forum may be able to help more. Obvious thing would be to take it to a MB workshop.
Hope it all works out.
see, that's what i'm not sure of. cause here's the thing... during the times that the "LAG" happens, i would put it to NEUTRAL and attempt to rev it. the gas pedal would be all the way to the floor. and the engine WOULD NOT REV. how problematic is that? i need some hardcore technicians or someone to give me suggestions.
see, that's what i'm not sure of. cause here's the thing... during the times that the "LAG" happens, i would put it to NEUTRAL and attempt to rev it. the gas pedal would be all the way to the floor. and the engine WOULD NOT REV. how problematic is that? i need some hardcore technicians or someone to give me suggestions.
Hmm, I agree. The lack of response from the accelerator pedal is indeed puzzling.
Hopefully someone more knowledgeable will help you out.
I think it might be something that you'll have to get fixed my Benz themselves.
is there any way to fix/solve this problem? i personally think that it's dangerous cause on the freeway, there are times when i need to pull out of a lane quickly. and out of nowhere. i'm screwed, the car behind me is coming in fast. and my car is BARELY moving.
let me know what you think.
bro, you never mentioned that before... this is probably the most important symptom of the issue... and yes, it has been happening to me.
Just drive very carefully dont accelerate too fast.
Im pretty sure it is the Pedal sensor now too... my mechanic told me that too.
Im going to Oreilly after work to get that code... then i'll order and replace it myself or take it to my mechanic.
I replaced my motor mounts in the past so it may be transmission mounts too ... which is dangerous because it could damage my tranny!
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