W211 AMG Discuss the W211 AMG's such as the E55 and the E63
Sponsored by:
Sponsored by:

M113k Misfire/backfire on acceleration problem

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 01-30-2023, 08:39 PM
  #1  
Newbie
Thread Starter
 
maz55amg's Avatar
 
Join Date: Jan 2023
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2003 CL55 AMG
M113k Misfire/backfire on acceleration problem

2003 CL55 AMG (I know this is the E55 forum but it’s more active and it should be the same)


Idles fine, misfires like crazy when accelerating then seems to go into a safe-mode with almost no power. Replaced o2 sensors, injectors, spark plugs, coil packs and wires, all vacuum lines, still dealing with this problem. Could it be the primary cats? They are not OEM they are Magnaflows. The codes point to them, but some people have been telling me that it’s generic and has nothing to do with the cats. Keep in mind the o2 sensors are new. Want some input before I decide to cut them off and see what happens.

mods:
77mm UPD clutched Pulley
630cc Injectors
82mm Throttle Body
VRP V2 heat exchanger
Magnaflow primary cats
secondary cats and resonator straight piped


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: M113k Misfire/backfire on acceleration problem



All times are GMT -4. The time now is 10:54 AM.