Here are some of the most common symptoms of, a faulty mass airflow (MAF) sensor Consequently, it will also show symptoms similar to when your vehicle has low fuel pressure from a faulty fuel pump. A Bad Mass Airflow (MAF) SensorĪ faulty mass airflow (MAF) sensor will cause problems similar to, low compression or low vacuum. Inspecting and cleaning the (EGR) valve and the (EGR) port in the intake manifold should cure the problem. This can make the engine idle rough, misfire and/or stall. Carbon Build Up On (EGR) ValveĪs a result, it will allow too much exhaust to be sucked, back into the intake manifold.

Consequently, if the (EGR) valve is stuck open or can’t seat, because of carbon buildup under the valve. A Bad (EGR) ValveĪn (EGR) valve that fails to close at idle, is another common cause of stalling. The ultimate bad news is, damage to the engine itself. A leak is a problem that creates both poor fuel efficiency and a loss of power in the vehicle. Locating Engine Vacuum LeaksĬheck for loose or broken vacuum hoses leaks around the intake manifold gasket or throttle body leaks around the (PCV) valve and (EGR) valve. Hesitation can come from accelerator problems but, it also may be symptomatic of an engine vacuum leak. Confirmation of an engine vacuum leak can be, a very loud hissing sound coming from the engine area. Idle speed, that is way too fast is one of the difficulties, and stalling is another. The problems that arise from an engine vacuum leak, can be more than annoying. Any Of The Following Could Be Possible Causes Of, Engine Stalling Problems: Engine Vacuum Leaks Consequently, stalling problems of any kind, are always a challenge to diagnose. Also, a working knowledge of your vehicle’s air, fuel, and electrical systems. Engine Stalling – Possible Causesįinding the cause of the problem takes, experienced troubleshooting skills. We’ve considered a few things that might be causing these problems, however, a faulty car engine could be more serious. This can be a tricky problem to solve because there are several things that could be causing engine stalling. What do you look for when the car starts to shake and sputter eventually causing engine stalling. A cold engine needs a fairly rich fuel mixture to start, and to idle smoothly while it warms up.

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