94 E-150 5.8 weird acceleration vibration
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94 E-150 5.8 weird acceleration vibration
After sorting out some suspension and steering issues, I finally got my E-150 registered and on the road. Passed the emissions an safety with flying colors. It has 133,000 miles on it. Engine is the 5.8.
On a drive on the freeway today, I noticed that if I push the gas pedal down fairly firmly, the van will shudder a bit as it accelerate, sort of like the feeling if you go from a smooth freeway to a little rougher road, or those rumble strips on the side of the freeway. If I ease the pedal down and accelerate a bit slower, it doesn't do that. If I take my foot off the gas, the shuddering stops immediately. So, in order to go from say, 60 to 75, I have to nurse the pedal to avoid the shaking. It happens at all speeds and is most noticable in the higher gears.
I am pretty sure it is engine related because it happens only after the engine is warmed up. I wonder if it is some kind of lugging issue because if I drop it down a gear, the shudder goes away or when the engine speed "catches up" to the road speed, it goes away. Motor mounts? I have ruled out anything to do with the suspension because it only happens on acceleration in higher gears....but at any speed. Thanks!!
On a drive on the freeway today, I noticed that if I push the gas pedal down fairly firmly, the van will shudder a bit as it accelerate, sort of like the feeling if you go from a smooth freeway to a little rougher road, or those rumble strips on the side of the freeway. If I ease the pedal down and accelerate a bit slower, it doesn't do that. If I take my foot off the gas, the shuddering stops immediately. So, in order to go from say, 60 to 75, I have to nurse the pedal to avoid the shaking. It happens at all speeds and is most noticable in the higher gears.
I am pretty sure it is engine related because it happens only after the engine is warmed up. I wonder if it is some kind of lugging issue because if I drop it down a gear, the shudder goes away or when the engine speed "catches up" to the road speed, it goes away. Motor mounts? I have ruled out anything to do with the suspension because it only happens on acceleration in higher gears....but at any speed. Thanks!!
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