100% Free

No Scanner Needed

Carly logo
Prices

evadavis1

V Klasse engine stalling at idle

My 2014 Mercedes V Klasse with a gasoline engine is having trouble The check engine light is on and the error memory says something about the engine stalling at idle It actually does stall sometimes when I'm stopped I'm thinking it might be the IAC valve, but I'm not sure where to even start looking Could the air intake be the culprit

Summary of the thread

A 2014 Mercedes V Klasse was experiencing engine stalling at idle, with the check engine light indicating an issue. The problem was suspected to be related to the idle air control (IAC) valve or a contaminated air intake. Error code P0505 confirmed an idle air control system malfunction. The solution involved inspecting and cleaning the air intake system, including the throttle body and intake manifold, and replacing the IAC valve. After these actions, the engine ran smoothly without further stalling.

Did this summary help you solve your problem?

4 comment(s)

ChrisSchm

I see you are experiencing difficulty with your Mercedes-Benz V Klasse The symptoms you describe suggest a potential malfunction within the idle air control system The IAC valve is a plausible candidate However, a heavily contaminated air intake manifold can also precipitate these issues I encountered a similar predicament in my previous vehicle, a Volvo V70, albeit with a diesel engine The diagnostic process revealed substantial carbonaceous deposits within the intake manifold, restricting airflow and ultimately causing erratic idling and occasional engine stalling Before proceeding with IAC valve replacement, I strongly recommend a thorough inspection of the air intake system, including the throttle body and intake manifold A visual assessment for excessive carbon buildup is crucial; if present, cleaning may resolve the issue Furthermore, could you provide the specific error code retrieved from the engine control unit This information may offer further insight into the root cause of the problem

evadavis1 (community.author)

Thanks for the detailed response The error code is P0505 Where exactly should I be looking for carbon buildup in the air intake I'm not super familiar with the layout of the engine, but I can probably find my way around with some guidance

ChrisSchm

Error code P0505 corroborates the suspicion of an idle air control system malfunction, further implicating the IAC valve or related components As for your inquiry regarding carbon deposit localization, focus your inspection on the following areas: the throttle body bore and plate; the intake manifold runner inlets, particularly those closest to the throttle body; and the IAC valve itself, if accessible In some vehicle configurations, the IAC valve is integrated into the throttle body assembly If the deposits are substantial and prove resistant to manual removal, chemical induction cleaning by a trained technician may be warranted Given your acknowledged unfamiliarity with the engine's architecture, I would advise consulting a certified Mercedes-Benz technician for a comprehensive diagnostic assessment and appropriate remedial measures While DIY cleaning is feasible, improper techniques or aggressive solvents can inflict damage upon sensitive components, potentially exacerbating the problem It may be best to bring it in to the shop

evadavis1 (community.author)

Thanks again for the help I took it to a workshop The mechanic confirmed it was the air intake being heavily contaminated and the IAC valve They cleaned everything up and replaced the valve Cost me about 425€, but the engine is running smoothly now No more stalling

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

MERCEDES

community_crosslink_rmh_model

VKLASSE