ozzwoman9
Well-Known Member
random shakey/rough running **updated**
ok, so a few weeks ago I was driving along and all the sudden my truck started running really rough. It was shaking like when on a gravel road and going over a "washboard". This is engine related as I stopped and it was also idling rough. I shut the truck off at the time and checked to make sure a plug wire or something hadn't come loose (found nothing). Started it up and it ran fine. I went ahead and changed the plugs/wire and had no problem for weeks.
So today, I had been driving along for about 40 miles or so and suddenly it started shaking bad again. It seems to do it worse at lower rpms. I was doing 40mph in 4th gear and had to grab hold of the stick as it was shaking so bad that I thought it was gonna pop out of gear. So I pull over, check everything over, nothing (even tapped the IAC) and nothing changed or appeared messed up. So I shut it off and start it back up twice and it still ran rough. I had no choice but to drive it another 20 miles like that (which there seems to be no lack in power when this happens). So I get to the store, was in there for like 30 mins, come back out, start it up and it runs a-ok!! FYI, I have done tuneup, plugs, wires, filters all within the last year or so...so that should not be the prob (coil pack is still original though).
I just put some fuel treatment in and topped off the gas tank to see if that helps. I have also been running E85 most of the time and I know when switching from E85 to pump gas to mix a 1/2 tank as I know people have had problems when switching directly from one to the other. But when my problem occurs it doesn't seem to happen specifically on one type of gas or the other.
Anyone have any ideas on where to look next? BTW, there is no check engine light or anything that comes on when this happens.
ok, so a few weeks ago I was driving along and all the sudden my truck started running really rough. It was shaking like when on a gravel road and going over a "washboard". This is engine related as I stopped and it was also idling rough. I shut the truck off at the time and checked to make sure a plug wire or something hadn't come loose (found nothing). Started it up and it ran fine. I went ahead and changed the plugs/wire and had no problem for weeks.
So today, I had been driving along for about 40 miles or so and suddenly it started shaking bad again. It seems to do it worse at lower rpms. I was doing 40mph in 4th gear and had to grab hold of the stick as it was shaking so bad that I thought it was gonna pop out of gear. So I pull over, check everything over, nothing (even tapped the IAC) and nothing changed or appeared messed up. So I shut it off and start it back up twice and it still ran rough. I had no choice but to drive it another 20 miles like that (which there seems to be no lack in power when this happens). So I get to the store, was in there for like 30 mins, come back out, start it up and it runs a-ok!! FYI, I have done tuneup, plugs, wires, filters all within the last year or so...so that should not be the prob (coil pack is still original though).
I just put some fuel treatment in and topped off the gas tank to see if that helps. I have also been running E85 most of the time and I know when switching from E85 to pump gas to mix a 1/2 tank as I know people have had problems when switching directly from one to the other. But when my problem occurs it doesn't seem to happen specifically on one type of gas or the other.
Anyone have any ideas on where to look next? BTW, there is no check engine light or anything that comes on when this happens.
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