Car is tugging/shaking/jerking at high speeds?
#1
Car is tugging/shaking/jerking at high speeds?
Just curious if anyone else has had this problem. Please excuse my lack of car knowledge if I get any of this wrong..
I have an impala (2000).
Car is jerking/tugging intermittently at highway speeds, but sometimes at lower speeds (usually around 20-25mph and sometimes 40mph). When cruise control is set around 60-70 the car almost always shakes. For some reason, the shaking isn’t as bad at 75+ MPH.
Immediately after I let off on the accelerator (on the highway) the car shakes and hesitates a little. When EGR valve is unplugged almost all tugging and shaking goes away.
My car has been doing this for about a year now - on and off. I’ve left the EGR valve unplugged for months at a time. Had the spark plugs and coils (I think?) replaced in march of ’08.
I have an impala (2000).
Car is jerking/tugging intermittently at highway speeds, but sometimes at lower speeds (usually around 20-25mph and sometimes 40mph). When cruise control is set around 60-70 the car almost always shakes. For some reason, the shaking isn’t as bad at 75+ MPH.
Immediately after I let off on the accelerator (on the highway) the car shakes and hesitates a little. When EGR valve is unplugged almost all tugging and shaking goes away.
My car has been doing this for about a year now - on and off. I’ve left the EGR valve unplugged for months at a time. Had the spark plugs and coils (I think?) replaced in march of ’08.
#2
if you've unplugged the egr valve and the shaking/tugging went away then i think you just answered your own question. replace the egr valve. either that or get your catalytic converter checked. the converters on the impalas have a tendency to go bad.
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#7
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Go to a salvage yard an buy a used EGR, clean it and try it. If that is it (which it probably is) either use the junk unit or go buy a new one. Sometimes ya just gotta use common sense and not depend strictly on computers to do your thinkin' for you. (LOL) Hell, mechanician can be fun!!
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Brendan Baker
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July 29th, 2012 11:46 PM