2004 E55 : Weird Throttle cutoff issue at WOT
Thread Starter
Junior Member
Joined: Mar 2012
Posts: 25
Likes: 1
2004 E55 AMG
2004 E55 : Weird Throttle cutoff issue at WOT
Hello all!
I am having an issue on my e55 that started recently and can not figure it out:
2004 E55 AMG
H/E upgrade with CM johnson pump
550cc injectors
BIP fuel rail
BIP tune
Kleemann Shortie headers with all cats removed
Rear cooling tank
Custom intake system
75 shot nitrous system
belt wrap kit
tcu tune
factory torque converter
I have 16" drag tires on the rear 255 50 16's with stock 18's on the front
Tune is fine, no smoke, no smells, no CELs
What it does is this:
You can be in any gear and go upto 6500 rpm, but as soon as you hit the gas at wot, at 4500-5500 it feels like the car hits a wall : Engine RPM stays up, and then you have to let off the gas, and hit it again, and it will go.. it seems to fight to go beyond 5500 at WOT
Anyone ever experience this?
Bad coil pack? Torque converter? TPS?
Again, with all mods, it has worked perfectly for about a year.. it started doing it recently
I am having an issue on my e55 that started recently and can not figure it out:
2004 E55 AMG
H/E upgrade with CM johnson pump
550cc injectors
BIP fuel rail
BIP tune
Kleemann Shortie headers with all cats removed
Rear cooling tank
Custom intake system
75 shot nitrous system
belt wrap kit
tcu tune
factory torque converter
I have 16" drag tires on the rear 255 50 16's with stock 18's on the front
Tune is fine, no smoke, no smells, no CELs
What it does is this:
You can be in any gear and go upto 6500 rpm, but as soon as you hit the gas at wot, at 4500-5500 it feels like the car hits a wall : Engine RPM stays up, and then you have to let off the gas, and hit it again, and it will go.. it seems to fight to go beyond 5500 at WOT
Anyone ever experience this?
Bad coil pack? Torque converter? TPS?
Again, with all mods, it has worked perfectly for about a year.. it started doing it recently
Senior Member
Joined: Dec 2014
Posts: 271
Likes: 4
From: Auckland, New Zealand
2004 E55 AMG
Have you checked your fuel pressure
You could have failing pumps and are just starving it for fuel at WOT upper RPMs
When mine were dying sometimes it would just not feel as punchy in the upper RPMs and power would fade - I initially thought it was due to belt slip but eventually turned out to be the pumps and fuel pressure
Just a thought
You could have failing pumps and are just starving it for fuel at WOT upper RPMs
When mine were dying sometimes it would just not feel as punchy in the upper RPMs and power would fade - I initially thought it was due to belt slip but eventually turned out to be the pumps and fuel pressure
Just a thought
MBWorld Fanatic!
Joined: Nov 2014
Posts: 1,139
Likes: 77
E55
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Newbie
Joined: Apr 2024
Posts: 3
Likes: 0
2005 e55 amg
Bringing old thread to life
I’m currently running into this same issue after changing to 650cc injectors replacing all the supercharger gaskets with 72mm fixed pulley just replaced fuel pumps and fuel sending unit hard start up and cuts out at 80mph just like you decribed! Did you ever resolve the issue?
MBWorld Fanatic!
Joined: Feb 2017
Posts: 2,297
Likes: 1,205
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
I’m currently running into this same issue after changing to 650cc injectors replacing all the supercharger gaskets with 72mm fixed pulley just replaced fuel pumps and fuel sending unit hard start up and cuts out at 80mph just like you decribed! Did you ever resolve the issue?
