HELP! P202B-002 Idle Speed Control Implausible
Thread Starter
Senior Member
Joined: Mar 2009
Posts: 443
Likes: 8
From: UK
Stage 3 63
HELP! P202B-002 Idle Speed Control Implausible
hi
Any ideas???
P202B-002 Idle Speed Control Implausible
- Short circuit to ground or open circuit
i has replaced the boost pressure sensor and has checked for any air leaks it all seem fine.
Engine idles funny (up and down) sometimes. Sometimes it's fine.
Sometimes it feels like it's going to stall. When i switch the car off and back on it seems fine then then the problem comes again !
Thanks Acid
Any ideas???
P202B-002 Idle Speed Control Implausible
- Short circuit to ground or open circuit
i has replaced the boost pressure sensor and has checked for any air leaks it all seem fine.
Engine idles funny (up and down) sometimes. Sometimes it's fine.
Sometimes it feels like it's going to stall. When i switch the car off and back on it seems fine then then the problem comes again !
Thanks Acid
Thread Starter
Senior Member
Joined: Mar 2009
Posts: 443
Likes: 8
From: UK
Stage 3 63
Hey
the tb is a 80 mm I brought from a good member of here, is there any other thing that it could be? Shall I put the standard tb back on and will it fit or do i Need the change everything over? And then i need another map ?
Do you know if I lose any power with this issue?
Thanks acid
the tb is a 80 mm I brought from a good member of here, is there any other thing that it could be? Shall I put the standard tb back on and will it fit or do i Need the change everything over? And then i need another map ?
Do you know if I lose any power with this issue?
Thanks acid
Former Vendor of MBWorld
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From: Houston
2003 W211 E55, 2003 W220 S600
yes to fit the 74mm the sc, has to come off becuase the snout is different. did this just start after the 80mm install?
did you check the hose i was talking about.
did you check the hose i was talking about.
Thread Starter
Senior Member
Joined: Mar 2009
Posts: 443
Likes: 8
From: UK
Stage 3 63
Hey
I was racing a r8 v10. Last night first run from standstill I gapped him 2.5 cars and then on the second racing I was in front and then bang ! My crank pulley broke off at 120mph lost all power and so much smoke like a ash cloud!
My pulley went under the car hit the sump and cracked it all oil everywhere ! The crack pulley then hit the r8 and and was stuck under his car lucky There was no damage on the r8 someone could have been killed !
The reason the pulley broke is because my crank had a bad wobble and it was expected, so no one is to blame but me! Lol
It was a 180mm pulley asp.
So I guess I need to rebuild my engine now and the tb is the last of my problems.
Acid
I was racing a r8 v10. Last night first run from standstill I gapped him 2.5 cars and then on the second racing I was in front and then bang ! My crank pulley broke off at 120mph lost all power and so much smoke like a ash cloud!
My pulley went under the car hit the sump and cracked it all oil everywhere ! The crack pulley then hit the r8 and and was stuck under his car lucky There was no damage on the r8 someone could have been killed !
The reason the pulley broke is because my crank had a bad wobble and it was expected, so no one is to blame but me! Lol
It was a 180mm pulley asp.
So I guess I need to rebuild my engine now and the tb is the last of my problems.
Acid
Super Member
Joined: Jan 2008
Posts: 626
Likes: 8
From: UK
E55K AMG
Hey
I was racing a r8 v10. Last night first run from standstill I gapped him 2.5 cars and then on the second racing I was in front and then bang ! My crank pulley broke off at 120mph lost all power and so much smoke like a ash cloud!
My pulley went under the car hit the sump and cracked it all oil everywhere ! The crack pulley then hit the r8 and and was stuck under his car lucky There was no damage on the r8 someone could have been killed !
The reason the pulley broke is because my crank had a bad wobble and it was expected, so no one is to blame but me! Lol
It was a 180mm pulley asp.
So I guess I need to rebuild my engine now and the tb is the last of my problems.
Acid
I was racing a r8 v10. Last night first run from standstill I gapped him 2.5 cars and then on the second racing I was in front and then bang ! My crank pulley broke off at 120mph lost all power and so much smoke like a ash cloud!
My pulley went under the car hit the sump and cracked it all oil everywhere ! The crack pulley then hit the r8 and and was stuck under his car lucky There was no damage on the r8 someone could have been killed !
The reason the pulley broke is because my crank had a bad wobble and it was expected, so no one is to blame but me! Lol
It was a 180mm pulley asp.
So I guess I need to rebuild my engine now and the tb is the last of my problems.
Acid
Really sorry to hear this,
must have been a big shock at the time ............ your dash should have lit up like a christmas tree when this happened. If you did not run the car for long dry of oil, it should be ok to just replace the sump ?????????? right?
I really dont want to change my pulley, bad exsperiences time and time agian.
Good luck man
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Thread Starter
Senior Member
Joined: Mar 2009
Posts: 443
Likes: 8
From: UK
Stage 3 63
hey
The Pulley was put onwith the right Torque setting ,but the Crank has always had a wobble, so i cannot blame the Pulley to break off under so much pressure.
My Engine is fine and runs, i have a spare sump, but i Need to change my crank!!
i am thinking of putting Forged Pistons ! and to rebuilt the bottom end!
Acid
The Pulley was put onwith the right Torque setting ,but the Crank has always had a wobble, so i cannot blame the Pulley to break off under so much pressure.
My Engine is fine and runs, i have a spare sump, but i Need to change my crank!!
i am thinking of putting Forged Pistons ! and to rebuilt the bottom end!
Acid
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Thread Starter
Senior Member
Joined: Mar 2009
Posts: 443
Likes: 8
From: UK
Stage 3 63
hey
i got a spare crank as i am a mercedes Breaker! lol
I has the old pulley, i just got a new one from Jerry it arrived today the 180 Asp weld.
I was intrested in the 190mm you had for sale, send me a pm.....
I am going to take the engine out and strip it and see.
Where can i get forged pistons from, ??? looking to run Big power and i need it to take it.
acid
i got a spare crank as i am a mercedes Breaker! lol
I has the old pulley, i just got a new one from Jerry it arrived today the 180 Asp weld.
I was intrested in the 190mm you had for sale, send me a pm.....
I am going to take the engine out and strip it and see.
Where can i get forged pistons from, ??? looking to run Big power and i need it to take it.
acid
Former Vendor of MBWorld
iTrader: (1)
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
hey
i got a spare crank as i am a mercedes Breaker! lol
I has the old pulley, i just got a new one from Jerry it arrived today the 180 Asp weld.
I was intrested in the 190mm you had for sale, send me a pm.....
I am going to take the engine out and strip it and see.
Where can i get forged pistons from, ??? looking to run Big power and i need it to take it.
acid
i got a spare crank as i am a mercedes Breaker! lol
I has the old pulley, i just got a new one from Jerry it arrived today the 180 Asp weld.
I was intrested in the 190mm you had for sale, send me a pm.....
I am going to take the engine out and strip it and see.
Where can i get forged pistons from, ??? looking to run Big power and i need it to take it.
acid
yes wiesco makes some pistons for the 55k
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From: Toronto
V12TT
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Joined: Jul 2011
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MB Service Wagon
Spent hours chasing wiring and vacuum diagrams, finally gave up and decided the throttle had to be bad. Then I read your post... Checked the rubber evap hose at the left rear cylinder head. It was on there, but loose on the connectors. Threw some zip ties at each junction, problem solved.
Well done.
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Joined: Dec 2007
Posts: 1,461
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From: Treasure Island, FL
GLE 63S
Sorry to bump this from over a month ago, but you just saved my ***! Thanks soooooo much.
Spent hours chasing wiring and vacuum diagrams, finally gave up and decided the throttle had to be bad. Then I read your post... Checked the rubber evap hose at the left rear cylinder head. It was on there, but loose on the connectors. Threw some zip ties at each junction, problem solved.
Well done.
Spent hours chasing wiring and vacuum diagrams, finally gave up and decided the throttle had to be bad. Then I read your post... Checked the rubber evap hose at the left rear cylinder head. It was on there, but loose on the connectors. Threw some zip ties at each junction, problem solved.
Well done.
Well done Shardul
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MB Service Wagon
Guess what... There is a leak, just a very small one. If they had made that hose out of one piece of tubing it would be fine, instead it's like 4 pieces with little plastic connectors in between.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,461
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From: Treasure Island, FL
GLE 63S
Mercedes only mentions an air leak one time with that fault code. You check the value it specifies, everything looks good, you "don't have an air leak."
Guess what... There is a leak, just a very small one. If they had made that hose out of one piece of tubing it would be fine, instead it's like 4 pieces with little plastic connectors in between.
Guess what... There is a leak, just a very small one. If they had made that hose out of one piece of tubing it would be fine, instead it's like 4 pieces with little plastic connectors in between.
Also don't forget the thin aluminum tube that goes in to the blower and that get's bumped out when you take the fuel rail off and you don't realize it's off until you try start the car and the same issue with erratic idel etc.
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From: Sandy Eggo
2006 CLS55
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Took my Kompressor out to mod the 82 mm TB (M273 one) in. Put everything back together, flashed my EC flashware, deleted all errors from the battery disconnect, initialized the TB with my SD and have the same error now.
My idle speed is through the roof at 1800-2200 rpm. Car is undrivable. Trying to brake and the car wants to keep going.
I used brake cleaner to see if I can find a vac leak. So far nothing. Took the driver side surge tank off again, took the grommet out of the snout and it feels like it's not really super tight. I placed a zip tie around the hose that pushes onto the aluminum pipe that goes into the snout because that thing slips on and off with little to no resistance. Put the surge tank back on and still nothing.
Came across this post and it seems like I did everything you guys suggested and tried. The TB opens and closes when I press the gas pedal.
My idle speed is through the roof at 1800-2200 rpm. Car is undrivable. Trying to brake and the car wants to keep going.
I used brake cleaner to see if I can find a vac leak. So far nothing. Took the driver side surge tank off again, took the grommet out of the snout and it feels like it's not really super tight. I placed a zip tie around the hose that pushes onto the aluminum pipe that goes into the snout because that thing slips on and off with little to no resistance. Put the surge tank back on and still nothing.
Came across this post and it seems like I did everything you guys suggested and tried. The TB opens and closes when I press the gas pedal.
Last edited by Mackhack; Jan 29, 2018 at 10:43 PM.
Newbie
Joined: Jan 2023
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CLS 55 AMG
Same Problem!! First Post I’ve found describing same issues
Took my Kompressor out to mod the 82 mm TB (M273 one) in. Put everything back together, flashed my EC flashware, deleted all errors from the battery disconnect, initialized the TB with my SD and have the same error now.
My idle speed is through the roof at 1800-2200 rpm. Car is undrivable. Trying to brake and the car wants to keep going.
I used brake cleaner to see if I can find a vac leak. So far nothing. Took the driver side surge tank off again, took the grommet out of the snout and it feels like it's not really super tight. I placed a zip tie around the hose that pushes onto the aluminum pipe that goes into the snout because that thing slips on and off with little to no resistance. Put the surge tank back on and still nothing.
Came across this post and it seems like I did everything you guys suggested and tried. The TB opens and closes when I press the gas pedal.
My idle speed is through the roof at 1800-2200 rpm. Car is undrivable. Trying to brake and the car wants to keep going.
I used brake cleaner to see if I can find a vac leak. So far nothing. Took the driver side surge tank off again, took the grommet out of the snout and it feels like it's not really super tight. I placed a zip tie around the hose that pushes onto the aluminum pipe that goes into the snout because that thing slips on and off with little to no resistance. Put the surge tank back on and still nothing.
Came across this post and it seems like I did everything you guys suggested and tried. The TB opens and closes when I press the gas pedal.
I am praying you see this and can maybe shed some light since this is years late..but I had 92mm vrp kit installed and now the car wants to throttle itself and take off when I shift it into Reveres or Drive..shop I have it at has no clue and I’m about to get it back and possibly take it apart again but really am hoping I don’t have to do that..did you ever find what caused it???
Newbie
Joined: Oct 2022
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2006 CLS55 AMg
sorry man I’m learning as I go and trying to do as much on my own as I can lol so any help is appreciated
Last edited by r.dub23; Oct 13, 2023 at 11:29 PM.
