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2017 GLE43 - P2279 vacuum leak - manifold hose part ID help?
I’ve tracked down a vacuum leak to this hose attached to the intake manifold. I can’t find any diagrams or hose parts info. Any idea what the T fitting is and the hose that goes under the manifold?
Last edited by emyselfandi; Dec 4, 2022 at 03:02 PM.
Reason: Posted too soon before finishing description
Where you got your pen test light. Mine was just about 3 inches down on the hose from your test light. Discovered it the vacuum leak the other day. My only concern is the hose run under the intake manifold and I'm not sure if I need to remove the intake manifold to gain access.
if anyone looking for the part number it's 276-018-23-00 Crankcase Breather Vent Line.
Where you got your pen test light. Mine was just about 3 inches down on the hose from your test light. Discovered it the vacuum leak the other day. My only concern is the hose run under the intake manifold and I'm not sure if I need to remove the intake manifold to gain access.
if anyone looking for the part number it's 276-018-23-00 Crankcase Breather Vent Line.
yes the intake has to be removed. Almost all of the engine wiring harness needs to be unplugged and all the intake gaskets need to be replaced too. I ended up having the dealership do the job. Was 800-900.
Found a Video for a GL450. I maybe attempting to replace it this weekend. I also have to remove the bi-turbo coolant reservoir, boost controller along with the ECM and Intake manifold. I think I'm going to reuse the IM gaskets. I know all my coil pack harness plug been removed not to long ago when I did my sparkplugs. Hopefully I don't have to spray lube inside of it this time.
I completed it over the weekend. The hardest part is getting those two lines off from under the Intake Manifold. It was allot of force to pull up. I put everything back together and threw a P023812 hard code, The boost pressure sensor has a short circuit to positive. When I took the car for a test drive I can activate and deactivate the boost from the scanner . I was puzzle because I was so focus on the boost controller. Hours went by and decided to do another look over and once I pop the hood. I notice the sensor on the Intercooler was not plugged in. Plugged it in clear the code and I got boost. I also had to resync the front passenger window since I disconnect the negative on the battery (under the seat) since the ECM had to come out.
I also replace all (6) Intake manifold gasket as well. Nothing was wrong with old one. Since I was in there just replace it.
Can you please provide the video you used? I have the same exact issue I believe. Took it to the dealer and they want $1700. on top of everything else with the total repair bill of $10,000.
looks like I’m doing it myself.
Last edited by mpr1sportbike; Sep 6, 2024 at 11:18 AM.
Can you please provide the video you used? I have the same exact issue I believe. Took it to the dealer and they want $1700. on top of everything else with the total repair bill of $10,000.
looks like I’m doing it myself.
Tip: Make sure the motor is warm it makes allot easier to remove the harness plug from the sensor/coil pack. All these harness plug has a slider locking clips that need to slide out (not removed from the plug) before you can release the harness plug from the sensor/coil pack. Please disconnect the negative terminal on the battery under the passenger seat before removing the ECM. To release the breather vent hose under the intake manifold. I sprayed allot of lubricant and I use hose clamp plyers with the plastic inserts to pry on them up slowly and working it. They use thick O-rings. so you have to keep working with prying it out.
Sounds like fun, mine is doing this but only in sport mode. If I drive in comfort my cel goes away in a day and everything is fine. Debating if I bother with this since it's 8 years old and I can live with comfort mode.
I completed it over the weekend. The hardest part is getting those two lines off from under the Intake Manifold. It was allot of force to pull up. I put everything back together and threw a P023812 hard code, The boost pressure sensor has a short circuit to positive. When I took the car for a test drive I can activate and deactivate the boost from the scanner . I was puzzle because I was so focus on the boost controller. Hours went by and decided to do another look over and once I pop the hood. I notice the sensor on the Intercooler was not plugged in. Plugged it in clear the code and I got boost. I also had to resync the front passenger window since I disconnect the negative on the battery (under the seat) since the ECM had to come out.
I also replace all (6) Intake manifold gasket as well. Nothing was wrong with old one. Since I was in there just replace it.
IM removed
You just saved me hours of work. P023812 on a 2020 C43 AMG was the intercooler sensor for me as well. Thank you!
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