Why is my EGR valve stuck at idle?
Why is my EGR valve stuck at idle? EGR Valve The exhaust gas recirculation (EGR) valve allows a certain amount of exhaust gases into the intake manifold to help lower engine temperature and harmful emissions. When the valve fails, it may get stuck close or open, or even leak. It is when the valve remains open when engine idle suffers. Can a fuel trim adjustment cause throttle hesitation? Fuel trim adjustments can compensate for dirty injectors and/or low fuel pressure to a certain extent; but occur too slowly to offset a throttle hesitation problem. Repairs will depend on what is...