Problem with acceleration in a 2002 C240-Please Help

1silvermercedes · 11-11-2009, 04:22 PM

Hi,

I have a problem with my 2002 C240 and I need some help. Any suggestions are much appreciated.

I have been having problems with my acceleration. It first started when I was making a right hand turn and trying to accelerate so a Ram truck wouldn't run up my @ss. I pressed the gas petal and the car just wouldn't go. I had the petal all the way to the floor and nothing was happening. Then all of the sudden the car just start to go. It has been happening off and on since then, especially at stop lights.

Today an orange triangle appeared on my dashboard when I was pushing the gas petal all the way to the floor. Then all of the sudden the car decided to accelerate and the orange triangle disappeared.

The throttle body valve was cleaned last night and the car is still acting up. Does anyone have any ideas of what might be going on?

Thanks for all your help,

KD

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OneOfaKindTrini · 11-11-2009, 04:50 PM

Do you have anything like a SprintBooster on your car? It the yellow triangle a CEL?

1silvermercedes · 11-11-2009, 05:03 PM

I don't have any aftermarket parts on the car and its an orange triangle, I'm sure.

samaritrey · 11-11-2009, 05:08 PM

the orange triangle is for the esp. the car will not let you spin the tires and if it senses any slippage will cut the throttle until it stops. if i hit the throttle to the floor in my c320 the rear end will break loose pretty easily if i am turning or it is damp. i don't think that is what is happening to you because first i think you would notice sliding or spinning of the rear tires and second if you were driving like that you would put two and two together and figure it out. Ok now some questions how many miles, replaced the cps, how new are the tires, location location location, any check engine lights or errors in the ic.

lol i just reread your problem and the first time it actually does sound like you were spinning the wheels and the car cut the throttle to stop it. how long have you had the car if you have not spun the tires before and noticed this that is interesting. my original questions still stand though.

samaritrey · 11-11-2009, 05:12 PM

look at page 273 of your owners manual.

1silvermercedes · 11-11-2009, 05:20 PM

The tires were not spinning in the rear of the car. I don't drive aggressively when this happens. The tires are brand new and the car has about 79,000 miles.

Karo · 11-11-2009, 05:36 PM

Have you tried to reset the ECU? Give that a shot.

Put key in: 1 click: 2 click: Start
This is legend follow below this.

Put key in the ignition
Turn once (click 1)
Press pedal all the way to the floor (hitting the quickdown)
Hold for 5 sec
Turn the key to off position while holding the pedal all the way down
wait 1-2 sec, Let go of pedal and wait for 2 min for ECU to reset.

DO NOT TAKE OFF THE KEY WHILE WAITING FOR 2 MINUTES

Hopefully this will do somehting. This resets the throttle so hopefully it can fix yoru problem. But I have a feeling it might be something more.

samaritrey · 11-11-2009, 05:36 PM

ok back to my original questions then. could be something in the esp is faulty and causing it to cut the throttle or it could be something worse like engine not getting enough fuel or fuel pump or cps or maf or ...

1silvermercedes · 11-11-2009, 09:05 PM

Thanks for all the suggestions, I tried the thing with the ECU and I will see if that works. Thanks again.
KD

LILBENZ230 · 11-11-2009, 10:15 PM

Could this be throttle position sensor or crankshaft position sensor?

acr2001 · 11-11-2009, 10:57 PM

Your ESP light came on, so this means either:

A. You don't know what you're talking about and one of your wheels WAS spinning.

B. Something is wrong with your ESP system and it's causing the engine to cut out when it's not necessary.

Does the ESP light come on whenever this happens?

jcnash · 11-11-2009, 11:12 PM

Quote:

Originally Posted by LILBENZ230

Could this be throttle position sensor or crankshaft position sensor?

The TPS and CPS will throw error codes (check engine light)....so unless he forgot to mention the error code...I think we can rule that out.

1silvermercedes · 11-12-2009, 05:24 PM

The ESP light only came up on the dashboard once and no the tires were not spinning, I'm not an idiot. There are no error codes present. Today however, I did notice when I rev. the engine at a stop light and then accelerated the car, it tends to respond better. This makes me think it might be a sensor problem. Also when I'm on a flat surface, and I take my foot off the brake, the car doesn't move. I find this wield because before this problem started I'm sure the car would move a bit when I released the brake. Thanks for all the comments.

Karo · 11-12-2009, 06:57 PM

Quote:

Originally Posted by 1silvermercedes

The ESP light only came up on the dashboard once and no the tires were not spinning, I'm not an idiot. There are no error codes present. Today however, I did notice when I rev. the engine at a stop light and then accelerated the car, it tends to respond better. This makes me think it might be a sensor problem. Also when I'm on a flat surface, and I take my foot off the brake, the car doesn't move. I find this wield because before this problem started I'm sure the car would move a bit when I released the brake. Thanks for all the comments.

I believe the trottle is responding better because you did a throttle reset "Sneaky ECU Reset".

Do you still get the same problem now? Do you have HID lights? I know some members messed up their ESP unit because they mounted the ballast to close to it.

Might be a bad ESP unit. I am hoping it's not because they cost a good chunk of money.

Good Luck

samaritrey · 11-12-2009, 07:39 PM

Quote:

Originally Posted by Karo

I believe the trottle is responding better because you did a throttle reset "Sneaky ECU Reset".

Do you still get the same problem now? Do you have HID lights? I know some members messed up their ESP unit because they mounted the ballast to close to it.

Might be a bad ESP unit. I am hoping it's not because they cost a good chunk of money.

Good Luck

i didn't even think to ask that this time i must be loosing it

acr2001 · 11-12-2009, 10:12 PM

Please don't take what I said personally, I wasn't calling you an idiot. It's just that we often get noobs who haven't read their manual and are clueless.

Without any codes I'm not sure what to tell you. I would focus on the ESP module first. Try running the car in dyno mode - if the ESP module is causing the problem then your car will operate normally in dyno mode.

I don't know the code for dyno mode on an 02, so please do a search.

holycaoAMG · 11-12-2009, 10:53 PM

Im guessing its the ESP module, but who knows.
From my experience, when i let my foot off the brake on a flate even surface, my car doesnt move either. Im thinking its normal.

jcnash · 11-12-2009, 11:01 PM

Quote:

Originally Posted by holycaoAMG

Im guessing its the ESP module, but who knows.
From my experience, when i let my foot off the brake on a flate even surface, my car doesnt move either. Im thinking its normal.

If its an automatic and its in 'Drive' or 'Reverse', it should roll in the appropriate direction when you lift off the brake!
I think thats common knowledge...maybe im missing some detail here

holycaoAMG · 11-13-2009, 12:43 AM

Quote:

Originally Posted by jcnash

If its an automatic and its in 'Drive' or 'Reverse', it should roll in the appropriate direction when you lift off the brake!
I think thats common knowledge...maybe im missing some detail here

Its an auto, but when im on drive and im at a red light, then i let off the brake to go, the car doesnt move forward at all. It feels and acts exactly like im driving stick.

acr2001 · 11-13-2009, 02:43 AM

Quote:

Originally Posted by holycaoAMG

Its an auto, but when im on drive and im at a red light, then i let off the brake to go, the car doesnt move forward at all. It feels and acts exactly like im driving stick.

My car does not move forward as quickly as your average car when you let off the brake in gear, but I believe that is how MB designed it. In comfort mode, the car rolls at an idle even less - almost not at all. Are you in comfort mode? Otherwise that seems a little strange.

TemjinX2 · 11-13-2009, 05:10 AM

does the car go into limp mode or safe mode after you get the esp error? If it does, then its probably a bad throttle actuator.

1silvermercedes · 11-15-2009, 12:46 PM

Hi everyone. So I have been working on my car this weekend. I cleaned the MAF sensor and EGR value and the car was running great. Then this morning I get a check engine light on my dashboard. Fun times. I don't think I put the EGR value in right. Does anyone know how to correctly connect the EGR value? I might be missing something but I have no idea. The car runs a lot better however, well at least for now

jcnash · 11-15-2009, 04:48 PM

Quote:

Originally Posted by holycaoAMG

Its an auto, but when im on drive and im at a red light, then i let off the brake to go, the car doesnt move forward at all. It feels and acts exactly like im driving stick.

Thats definitely not right.

When in 'S' mode, it should roll slowly (not as aggressively as other cars) provided the surface is level.

When in 'W/C' mode, it should still roll but even slower..

Put the car in Neutral and check your idling RPM..when warmed up my car idles at about 700-800 RPM

dmatre · 11-15-2009, 06:39 PM

You say that the tires are brand new - this is probably a clue to what's going on.

Did you change the brand/type/size of the tires, or did you change only 2?

If you have changed the rolling diameter of one axle in relation to the other, the ESP will "sense" wheelspin and apply the brake to stop this.

A co-worker had this happen to him on his BMW 3-series, and his car would come to a complete stop in the intersection when it happened.

Hopefully it's something simple like this. Good luck!

c240MBenz · 03-06-2012, 10:13 PM

Hey EVERYONE- I am a newby to the C240 Mercedes Benz world. my issue arrises when my car started lagging as I drove my buddy drove her and said your car doesnt pick up like its supposed to why? After a few hours of driving it she started to litterally not pick up at all then it would pick up out of no where. Well I found this forum and did 3 things things so far from to try to correct the fault. I cleaned and removed the MAF Sensor, I also cleaned the L shaped neck between the MAF sensor and the Throttle body itself, I removed all the lines and inspected them for cracks or missing parts everything seems and looks good no frays or dry rott, i also opened up and cleaned the Throttle body with some Throttle body cleaner and wiped it down. I moved the throttle body flap back and forth to check for sticking or maybe it being 2 loose well it was actually pretty good no sticking no excessive looseness or sign of wear. i added feul cleaner and then added 91 OCTANE fuel to it . I replaced all components and the car is still acting up . The car was driving yesterday ( Mar 5,2012 ) but doesnt drive as of today it acts very irratic and sputters constantly then shuts off. I made a youtube video so you can see personally how it acts when is start it up . i also did reset my ECU like it says above and it didnt do anything. there is no Codes or CEL lights being turned on . the CEL light was on at one point but now its off and it hasnt turned on. please give me any advice or what to look at. http://youtu.be/_OJgC-B7bhA

11-11-2009, 05:08 PM	#4
samaritrey Super Moderator 2001 Mercedes-Benz C-Class Join Date: Mar 2007 Location: McLean VA Posts: 3,708 Drives: THE C320	the orange triangle is for the esp. the car will not let you spin the tires and if it senses any slippage will cut the throttle until it stops. if i hit the throttle to the floor in my c320 the rear end will break loose pretty easily if i am turning or it is damp. i don't think that is what is happening to you because first i think you would notice sliding or spinning of the rear tires and second if you were driving like that you would put two and two together and figure it out. Ok now some questions how many miles, replaced the cps, how new are the tires, location location location, any check engine lights or errors in the ic. lol i just reread your problem and the first time it actually does sound like you were spinning the wheels and the car cut the throttle to stop it. how long have you had the car if you have not spun the tires before and noticed this that is interesting. my original questions still stand though. __________________ Trey's Car History 87 Suzuki Samurai Gone :( 99 KIA Sportage 2Door Sold July 20 2009 97 J30 given when 16 Has been passed down to sibling 01 C320 Got at 16 as of 2-22-13 has 189,000 miles with Eurocharged Tune, AMG Style Trunk Spoiler, BIX, NAV 2.0, Tein Springs with Renntech Shocks Next car G55 or SLK55 All About Trey and Cars Thread

11-11-2009, 05:12 PM	#5
samaritrey Super Moderator 2001 Mercedes-Benz C-Class Join Date: Mar 2007 Location: McLean VA Posts: 3,708 Drives: THE C320	look at page 273 of your owners manual. __________________ Trey's Car History 87 Suzuki Samurai Gone :( 99 KIA Sportage 2Door Sold July 20 2009 97 J30 given when 16 Has been passed down to sibling 01 C320 Got at 16 as of 2-22-13 has 189,000 miles with Eurocharged Tune, AMG Style Trunk Spoiler, BIX, NAV 2.0, Tein Springs with Renntech Shocks Next car G55 or SLK55 All About Trey and Cars Thread

11-11-2009, 05:36 PM	#7
Karo MBWorld Fanatic! Garage is empty, add now Join Date: Feb 2009 Posts: 5,456 Drives: 2006 C350 Sport	Have you tried to reset the ECU? Give that a shot. Put key in: 1 click: 2 click: Start This is legend follow below this. Put key in the ignition Turn once (click 1) Press pedal all the way to the floor (hitting the quickdown) Hold for 5 sec Turn the key to off position while holding the pedal all the way down wait 1-2 sec, Let go of pedal and wait for 2 min for ECU to reset. DO NOT TAKE OFF THE KEY WHILE WAITING FOR 2 MINUTES Hopefully this will do somehting. This resets the throttle so hopefully it can fix yoru problem. But I have a feeling it might be something more. __________________ Custom OETuning ECU Tune, 82mm TB with Flap Deleted Manifold, Headers, Remus muffler., K&N. CF Lip, CF Rear Wing, VOLK Progressive ME. LED Interior, Flat Badge, DEPO with 6K H&F, Renntech Shocks with H&R Springs, Chirp, Euro Impact Strips (need to put on) Debadged but the plate says it all. Need a tint badly.

11-11-2009, 05:36 PM	#8
samaritrey Super Moderator 2001 Mercedes-Benz C-Class Join Date: Mar 2007 Location: McLean VA Posts: 3,708 Drives: THE C320	ok back to my original questions then. could be something in the esp is faulty and causing it to cut the throttle or it could be something worse like engine not getting enough fuel or fuel pump or cps or maf or ... __________________ Trey's Car History 87 Suzuki Samurai Gone :( 99 KIA Sportage 2Door Sold July 20 2009 97 J30 given when 16 Has been passed down to sibling 01 C320 Got at 16 as of 2-22-13 has 189,000 miles with Eurocharged Tune, AMG Style Trunk Spoiler, BIX, NAV 2.0, Tein Springs with Renntech Shocks Next car G55 or SLK55 All About Trey and Cars Thread

11-11-2009, 10:15 PM	#10
LILBENZ230 MBWorld Fanatic! Garage is empty, add now Join Date: Jul 2008 Posts: 6,177 Drives: 2011 C300	Could this be throttle position sensor or crankshaft position sensor? __________________ FOR SALE 2011 C300 Sport rims/tires/TPMS/cap package

11-11-2009, 04:50 PM	#2
OneOfaKindTrini MBWorld Fanatic! Garage is empty, add now Join Date: Jun 2009 Location: Queens, Ny Posts: 1,833 Drives: Nike Turbo Shox	Do you have anything like a SprintBooster on your car? It the yellow triangle a CEL?

11-11-2009, 05:03 PM	#3
1silvermercedes Newbie Garage is empty, add now Join Date: Nov 2009 Posts: 6 Drives: 2002 C-240	I don't have any aftermarket parts on the car and its an orange triangle, I'm sure.

11-11-2009, 05:20 PM	#6
1silvermercedes Newbie Garage is empty, add now Join Date: Nov 2009 Posts: 6 Drives: 2002 C-240	The tires were not spinning in the rear of the car. I don't drive aggressively when this happens. The tires are brand new and the car has about 79,000 miles.

11-11-2009, 09:05 PM	#9
1silvermercedes Newbie Garage is empty, add now Join Date: Nov 2009 Posts: 6 Drives: 2002 C-240	Thanks for all the suggestions, I tried the thing with the ECU and I will see if that works. Thanks again. KD

11-11-2009, 10:57 PM	#11
acr2001 MBWorld Fanatic! Garage is empty, add now Join Date: Nov 2007 Location: NYC Posts: 1,983 Drives: 2012 C300 4Matic	Your ESP light came on, so this means either: A. You don't know what you're talking about and one of your wheels WAS spinning. B. Something is wrong with your ESP system and it's causing the engine to cut out when it's not necessary. Does the ESP light come on whenever this happens?

11-12-2009, 05:24 PM	#13
1silvermercedes Newbie Garage is empty, add now Join Date: Nov 2009 Posts: 6 Drives: 2002 C-240	The ESP light only came up on the dashboard once and no the tires were not spinning, I'm not an idiot. There are no error codes present. Today however, I did notice when I rev. the engine at a stop light and then accelerated the car, it tends to respond better. This makes me think it might be a sensor problem. Also when I'm on a flat surface, and I take my foot off the brake, the car doesn't move. I find this wield because before this problem started I'm sure the car would move a bit when I released the brake. Thanks for all the comments. Last edited by 1silvermercedes; 11-12-2009 at 05:27 PM.

11-12-2009, 10:12 PM	#16
acr2001 MBWorld Fanatic! Garage is empty, add now Join Date: Nov 2007 Location: NYC Posts: 1,983 Drives: 2012 C300 4Matic	Please don't take what I said personally, I wasn't calling you an idiot. It's just that we often get noobs who haven't read their manual and are clueless. Without any codes I'm not sure what to tell you. I would focus on the ESP module first. Try running the car in dyno mode - if the ESP module is causing the problem then your car will operate normally in dyno mode. I don't know the code for dyno mode on an 02, so please do a search.

11-12-2009, 10:53 PM	#17
holycaoAMG Senior Member Garage is empty, add now Join Date: Jul 2008 Location: Nor Cal Posts: 380 Drives: 08 C300	Im guessing its the ESP module, but who knows. From my experience, when i let my foot off the brake on a flate even surface, my car doesnt move either. Im thinking its normal. __________________ 19" Mandrus Milenium Staggered H&R SS Magna Flow X Pipe Secondary Cat Delete Brabus Spoiler 8000K HID Shattered Fogs LED Interior/License 5% Tint Akebono Ceramics Vinyl Grill Fins

11-13-2009, 05:10 AM	#21
TemjinX2 MBWorld Fanatic! Garage is empty, add now Join Date: Dec 2007 Location: Corona, CA Posts: 5,034 Drives: 03 g35 coupe...........02 c32 Sold	does the car go into limp mode or safe mode after you get the esp error? If it does, then its probably a bad throttle actuator. __________________ 2002 Mercedes c32 amg S2k projector retrofit http://www.mbworld.org/forums/c32-am...-retrofit.html My carputer http://forums.mbworld.org/forums/sho...d.php?t=237456 TemjinX2's rides http://forums.mbworld.org/forums/sho...=1#post3053382 FREE C32 BLOCK/ PART OUThttp://mbworld.org/forums/engine-per...ml#post5433265

11-15-2009, 12:46 PM	#22
1silvermercedes Newbie Garage is empty, add now Join Date: Nov 2009 Posts: 6 Drives: 2002 C-240	Hi everyone. So I have been working on my car this weekend. I cleaned the MAF sensor and EGR value and the car was running great. Then this morning I get a check engine light on my dashboard. Fun times. I don't think I put the EGR value in right. Does anyone know how to correctly connect the EGR value? I might be missing something but I have no idea. The car runs a lot better however, well at least for now

11-15-2009, 06:39 PM	#24
dmatre MBWorld Fanatic! Garage is empty, add now Join Date: Feb 2003 Location: Charlotte, NC Posts: 1,045 Drives: '03 C230 Sport Sedan	You say that the tires are brand new - this is probably a clue to what's going on. Did you change the brand/type/size of the tires, or did you change only 2? If you have changed the rolling diameter of one axle in relation to the other, the ESP will "sense" wheelspin and apply the brake to stop this. A co-worker had this happen to him on his BMW 3-series, and his car would come to a complete stop in the intersection when it happened. Hopefully it's something simple like this. Good luck! __________________ 2003 C230 Sport Sedan

03-06-2012, 10:13 PM	#25
c240MBenz Junior Member Garage is empty, add now Join Date: Mar 2012 Location: Beverly Hills ,California Posts: 45 Drives: C240 Mercedes Benz	Hey EVERYONE- I am a newby to the C240 Mercedes Benz world. my issue arrises when my car started lagging as I drove my buddy drove her and said your car doesnt pick up like its supposed to why? After a few hours of driving it she started to litterally not pick up at all then it would pick up out of no where. Well I found this forum and did 3 things things so far from to try to correct the fault. I cleaned and removed the MAF Sensor, I also cleaned the L shaped neck between the MAF sensor and the Throttle body itself, I removed all the lines and inspected them for cracks or missing parts everything seems and looks good no frays or dry rott, i also opened up and cleaned the Throttle body with some Throttle body cleaner and wiped it down. I moved the throttle body flap back and forth to check for sticking or maybe it being 2 loose well it was actually pretty good no sticking no excessive looseness or sign of wear. i added feul cleaner and then added 91 OCTANE fuel to it . I replaced all components and the car is still acting up . The car was driving yesterday ( Mar 5,2012 ) but doesnt drive as of today it acts very irratic and sputters constantly then shuts off. I made a youtube video so you can see personally how it acts when is start it up . i also did reset my ECU like it says above and it didnt do anything. there is no Codes or CEL lights being turned on . the CEL light was on at one point but now its off and it hasnt turned on. please give me any advice or what to look at. http://youtu.be/_OJgC-B7bhA Last edited by c240MBenz; 03-06-2012 at 10:21 PM. Reason: forgot year and miles 2002 C240 Mercedes Ben 129K Miles

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