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Intermittent Rough Idle
My 04 B2300 has a slightly rough idle that shakes the truck at stop lights. Sometimes it's worse than others and sometimes it's barely present. I have no DTCs and the spark plugs have been replaced in the last 6 months. The rough idle was present before I replaced the plugs. The engine seems to...- Tman5293
- Thread
- Replies: 14
- Forum: 4-Cylinder Engines (1983-2011)
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Need some help tracking down a vacuum leak in my truck
I have a 2004 B2300 that is experiencing vacuum loss on acceleration. Symptoms include the blower direction changing from dash vents to defrost when I accelerate indicating no vacuum pressure and a high/rough idle. The engine idles anywhere from 900-1100rpm but usually sits just below 1000rpm...- Tman5293
- Thread
- Replies: 13
- Forum: 4-Cylinder Engines (1983-2011)