Harness leak & Removing Manifold
Thread Starter
Newbie
Joined: Feb 2024
Posts: 1
Likes: 1
13 ml350
Harness leak & Removing Manifold
Hello,
I am removing the intake manifold to reach a camshaft position sensor. Has anyone been able to successfully remove the middle foam piece over those two rear screws holding the manifold down? The WIS states "Remove partition wall between wheel wells".
I have found oil on the plug to the ECU (no codes yet). To remedy, I am replacing the 4 camshaft position sensors, and the 4 camshaft solenoids, and plan to spray the harness on both ends, with electric cleaner multiple times.
Does this usually solve the problem? Any advice on the two rear bolts for the manifold?
TIA
I am removing the intake manifold to reach a camshaft position sensor. Has anyone been able to successfully remove the middle foam piece over those two rear screws holding the manifold down? The WIS states "Remove partition wall between wheel wells".
I have found oil on the plug to the ECU (no codes yet). To remedy, I am replacing the 4 camshaft position sensors, and the 4 camshaft solenoids, and plan to spray the harness on both ends, with electric cleaner multiple times.
Does this usually solve the problem? Any advice on the two rear bolts for the manifold?
TIA
Out Of Control!!
Joined: Sep 2018
Posts: 14,663
Likes: 4,567
From: unbegrenzt
2017 GLE350 4MATIC
Hello,
I am removing the intake manifold to reach a camshaft position sensor. Has anyone been able to successfully remove the middle foam piece over those two rear screws holding the manifold down? The WIS states "Remove partition wall between wheel wells".
I have found oil on the plug to the ECU (no codes yet). To remedy, I am replacing the 4 camshaft position sensors, and the 4 camshaft solenoids, and plan to spray the harness on both ends, with electric cleaner multiple times.
Does this usually solve the problem? Any advice on the two rear bolts for the manifold?
TIA
I am removing the intake manifold to reach a camshaft position sensor. Has anyone been able to successfully remove the middle foam piece over those two rear screws holding the manifold down? The WIS states "Remove partition wall between wheel wells".
I have found oil on the plug to the ECU (no codes yet). To remedy, I am replacing the 4 camshaft position sensors, and the 4 camshaft solenoids, and plan to spray the harness on both ends, with electric cleaner multiple times.
Does this usually solve the problem? Any advice on the two rear bolts for the manifold?
TIA
Junior Member
Joined: Dec 2010
Posts: 50
Likes: 2
From: Castle Rock, CO
2021 GLE AMG 63S, 2022 GLC, and 2013 ML350 4Matic
They also make these little throw away harnesses you may want to put to protect the harness. Make sure it fits your model.
https://www.fcpeuro.com/products/mer...des-2711500156
You have to remove the partition wall. I was able to get the manifold loose enough to squeeze in and replace the bank 2 exhaust, but I didn’t put it back on securely and there was a small leak.
https://www.fcpeuro.com/products/mer...des-2711500156
You have to remove the partition wall. I was able to get the manifold loose enough to squeeze in and replace the bank 2 exhaust, but I didn’t put it back on securely and there was a small leak.
Last edited by marcanders; Feb 15, 2024 at 11:42 PM.
Super Member
Joined: Nov 2001
Posts: 789
Likes: 55
From: Henrico, Virginia
2014 ML350 4Matic
The video is for a sedan. The ML is very different - the firewall center piece sits low over the rear of the plenum. That piece is supposed to be removable, but I was not able to extract it after removing all the screws (the bottom screws are REALLY hard to reach).
Junior Member
Joined: Dec 2010
Posts: 50
Likes: 2
From: Castle Rock, CO
2021 GLE AMG 63S, 2022 GLC, and 2013 ML350 4Matic
I tried to do it 2 weeks ago and gave up. I gave up as the intake was loose enough where I was able to squeeze underneath to replace that bank 2 exhaust sensor. Of course all the movement messed up the seal putting it back on and I had an intake leak. It didn’t fix my problem (subsequently it was a bad camshaft that’s being replaced) so it’s at the shop and they are dealing with it. I know this doesn’t help but Know it does need to come off, I know this video isn’t helpful but it’s the best I was able to find as well. Take away all the rubber and plastic and good luck!
MBWorld Fanatic!
Joined: May 2021
Posts: 2,524
Likes: 2,041
From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
Out Of Control!!
Joined: Sep 2018
Posts: 14,663
Likes: 4,567
From: unbegrenzt
2017 GLE350 4MATIC
The dash plenum is trivially easy to remove. Remove the two corner pieces then the middle piece. Engine is nearly identical in all contemporary installations for 205, 212/213 and 166.
Trending Topics
Super Member
Joined: Nov 2001
Posts: 789
Likes: 55
From: Henrico, Virginia
2014 ML350 4Matic
The middle piece is the problem. I would like to see a video of someone actually removing it. After removing all the fasteners I could not get mine out. Maybe I'm just not talented enough.
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
Junior Member
Joined: Dec 2010
Posts: 50
Likes: 2
From: Castle Rock, CO
2021 GLE AMG 63S, 2022 GLC, and 2013 ML350 4Matic
Super Member
Joined: Nov 2001
Posts: 789
Likes: 55
From: Henrico, Virginia
2014 ML350 4Matic
That is the piece of the partition that causes the grief. I tried to remove it to do spark plugs per the MB WIS instructions. I removed all the side pieces, cowl seal, etc. but even though I had removed all the fasteners I could not extract the piece. I searched the web and even talked to some dealer techs. Everyone did what I ended up doing - do the plugs without removing the center piece of the partition. I appreciate the efforts made on this thread so far but I haven't yet seen anyone actually extracting that panel. My ML shows no signs of oil leakage so I am not in the immediate need to remove that part. But if it becomes necessary I'll probably turn the job over to the dealer.
Junior Member
Joined: Dec 2010
Posts: 50
Likes: 2
From: Castle Rock, CO
2021 GLE AMG 63S, 2022 GLC, and 2013 ML350 4Matic
At a bare minimum, if you’re concerned about the oil leaking into the wiring harness, you can do 3 of the 4 of them without removing the intake and you can see if you can put those throw away harness extenders on. https://www.fcpeuro.com/products/mer...des-2711500156
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
