Help!!!! No boost or power!
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2018 e63amgs
Help!!!! No boost or power!
i have an issue with my 2018 E63 s... it’s has 2300 miles on it and I’m not getting any boost or power anymore... on the boost and hp meters it’s maxing out at 40% boost and 300hp... it’s been at the dealer for a month now and no resolution... no check engine lights or fault codes... I’m thinking it’s something so simple everyone is over looking it bc they checked all the obvious... all the “values” are within spec, the exhaust valves open and close, there are no leaks, and everything else major checks out... any ideas or anyone else experience this issue?!? Anything will help at this point!
Thanks!
Thanks!
Last edited by princep3231; Nov 13, 2018 at 01:22 AM. Reason: Typos
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E63s
My car has the same issue. The exhaust flap broken, my car had no power. I think that is the problem. After fixing the flap, my car still has no power. Because my car was tuned, dealer blamed the tune cause this issue. But I know it is not the tune. it bothers me very well. If you solve this issue, plz let me know.
Last edited by Qingqing Su; Nov 13, 2018 at 01:51 AM.
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2018 e63amgs
My car has the same issue. The exhaust flap broken, my car had no power. I think that is the problem. After fixing the flap, my car still has no power. Because my car was tuned, dealer blamed the tune cause this issue. But I know it is not the tune. it bothers me very well. If you solve this issue, plz let me know.
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2018 E63S
Oh man. Experiencing the same issue for the past month or so. We've done lots of testing, and even brought the car to the Mercedes dealership amg performance center...have yet to figure out the problem we're trying to solve. No codes, no nothing. We did find a tech bulletin called 'power cut above 4,000 rpms', or something along those lines. One cause is the exhaust flap issue....one of mine is stuck. Parts coming from Germany this week. Disappointed to hear that didnt solve the problem. If this doesn't work, will reflash ecu to check the software side. My car has pure stage 1 turbos and tuned of course. Interesting to hear this has also happened to tune only and stock cars as well.
...was going to make a post this week after the exhaust work was completed. Now it seems that exhaust work won't help with this problem. Oof.
I'll report back. If no solution soon, also gonna make a change, even though this is my favorite car on the road. Too expensive of a ride to make only 3-400 hp. Hah. Might have some low miles upgraded turbos available for trade of stock ones soon. Hope thats not the case!!
...was going to make a post this week after the exhaust work was completed. Now it seems that exhaust work won't help with this problem. Oof.
I'll report back. If no solution soon, also gonna make a change, even though this is my favorite car on the road. Too expensive of a ride to make only 3-400 hp. Hah. Might have some low miles upgraded turbos available for trade of stock ones soon. Hope thats not the case!!
Last edited by Ralcbah; Nov 13, 2018 at 06:50 AM.
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E63s
I want to ask you the same thing. Did you replace them both (actuator motors and muffler)? My dealer only replaced the actuator motors. I found that the angle of the flap was not the same as the other side. It works, but cannot completely open and completely closed. I asked them to replace the muffler, but the dealer refused.
I think the problem is on this exhaust. I saw a post about c63s said plug out the actuator motors can make flap 100% open. I tried and the car into the same mode as our issue, no boost after 4000 rpm. When I plug the actuator motors back, everything works fine.
I think the problem is on this exhaust. I saw a post about c63s said plug out the actuator motors can make flap 100% open. I tried and the car into the same mode as our issue, no boost after 4000 rpm. When I plug the actuator motors back, everything works fine.
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2018 E63S
I want to ask you the same thing. Did you replace them both (actuator motors and muffler)? My dealer only replaced the actuator motors. I found that the angle of the flap was not the same as the other side. It works, but cannot completely open and completely closed. I asked them to replace the muffler, but the dealer refused.
I think the problem is on this exhaust. I saw a post about c63s said plug out the actuator motors can make flap 100% open. I tried and the car into the same mode as our issue, no boost after 4000 rpm. When I plug the actuator motors back, everything works fine.
I think the problem is on this exhaust. I saw a post about c63s said plug out the actuator motors can make flap 100% open. I tried and the car into the same mode as our issue, no boost after 4000 rpm. When I plug the actuator motors back, everything works fine.
So your car is working fine now? Under what condition? When you disconnect electrical from the actuators?
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E63s
We ordered actuator motors only...no mufflers. If the car needs mufflers to work, will def work to have Benz pay for that or just get the AWE setup. This issue has nothing to do with mods apparently.
So your car is working fine now? Under what condition? When you disconnect electrical from the actuators?
So your car is working fine now? Under what condition? When you disconnect electrical from the actuators?
I think only replace the actuators cannot solve the issue, need to replace them both.
Last edited by Qingqing Su; Nov 13, 2018 at 10:37 AM.
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2018 E63S
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E63s
I am planning to do the AWE exhaust upgrade. They are 15% off right now. the price of one side muffler is 1836 USD. But full Awe exhaust is 3200 USD.
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2018 E63S
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E63s
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I remember reading somewhere on the forums that the exhaust valve is actually responsible for causing power loss if it fails to open up, I remember AWE was offering a solution to bypass this on the C63s forums. Not 100% sure just going off memory
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E63s
I tested that c63 awe bypass on the e63s (when my car was no issues), it didn't work for e63 and cause lacking power.
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I agree with you. I guess the butterfly valve got stuck. and the stuck cause the damage of actuators.
Last edited by Qingqing Su; Nov 13, 2018 at 12:38 PM.
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2018 e63amgs
ive tried everything including replacing the entire exhaust system with another stock system... same issues so def not the cause... I was hoping it was but it’s not!
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go fast grocery getter wagon
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2018 E63S
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2018 E63S
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another similar occurence over at C63 forum ... may suggest weak battery ....
https://mbworld.org/forums/c63-c63s-...-anyone-2.html
https://mbworld.org/forums/c63-c63s-...-anyone-2.html
Last edited by bobblehead; Nov 13, 2018 at 01:51 PM.
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2018 E63S
another similar occurence over at C63 forum ... may suggest weak battery ....
https://mbworld.org/forums/c63-c63s-...-anyone-2.html
https://mbworld.org/forums/c63-c63s-...-anyone-2.html
Thx. My guy reset 'everything' last week, but will have it done again tomorrow for the sake of thoroughness. Will also look at battery independently. Thanks again.
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2003 W211 E55, 2003 W220 S600
Just doing a smoke test without pressure will only detect leak at 0 psi.
I have components that hold boost till 15 psi and at higher boost levels the cracks leak.
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2018 E63S
Update later this morning...
