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View Full Version : 03 suburban mult cylinder misfire???



770johnnyw
February 4th, 2012, 10:39 AM
guys ive tried everything...intake gaskets plugs wires the whole nine. shakes bad at idle and clears up somewhat while reving. i did notice when you unplug the white connector on the driver side the truck shuts down and unplugging the pass side will just cause it to run rougher. any ideas

Chuck L.
February 23rd, 2012, 10:04 AM
Maybe a bit late... Do a data log and post it up....
Sounds like there's 1 or more "issues" on the pass side, and the dr side is ok. When u unplug the pass plug only the remaining "good" cyls drop out. Engine is now on 4 cyls...
While on the dr side, you kill all 4, +the pass dead players, and the engine dies.