This topic contains 4 replies, has 2 voices, and was last updated by Jerry Quezada 5 days, 1 hour ago.
Lately I have been experiencing rough idle on my SUV. This started back in Dec where it would rough idle during cold start but then level out and work like a charm. This past week, the idling was progressing on affecting the car drivability. The rough idles starts at times during the cold start in the AM then goes away, however on a stop light the car would idle fine, then start to rough idle – thermostat 1/4 open according to the gauge. It would drive fine in the highway (I drive about 24 miles total round trip to work). One the return home I experience the car idling rough more frequent during stop lights, then work fine when I feed it some gas, the begin to rough idle when stopped. I cleaned the throttle body and the car purred fine, ran great for a day, now last night when parking the car – it rough idle and shut off on me. I plug the OBD-2 and no check engine light. However I did a live data feed while idling and it marked the RPM 450, if I am not mistaken it need to be at 800. Can it be the EGR valve that is going bad? I can hear the hissing of air when driving and idle. Other than that not sure what else can cause as all hoses are connected and no leakage. Also I ordered a new fuel filter, feel free to add your 2 cents on what else I am overlooking.
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