Accelerator pedal jerky
#1
Accelerator pedal jerky
The car, 1995 x300, was running smoothly. Took it to get the state inspection done, on the way, the accelerator started acting jerky. It was moving on its own, like a gremlin under the hood pulling and pushing the cable.
When I bring it home, I plan on pulling the throttle body off for a good cleaning (when I had the intake manifold off, I won't say how dark it looked inside the head) and replacing the air filter, but should I be looking for something else?
The mechanic passed it all, with 2 exceptions: the jerky pedal wouldn't let it go over 25 MPH, and an exhaust leak before the cat (didn't say which one) that he couldn't see, but felt from under a heat shield.
Having not seen that much of the car yet, I'm not familiar with the exhaust - should I be scared that I have have a cracked converter? I'm picking it up tomorrow morning.
I've got no warning lights on the dash.
Funny part - it's passed emission testing, even with the exhaust leak.
When I bring it home, I plan on pulling the throttle body off for a good cleaning (when I had the intake manifold off, I won't say how dark it looked inside the head) and replacing the air filter, but should I be looking for something else?
The mechanic passed it all, with 2 exceptions: the jerky pedal wouldn't let it go over 25 MPH, and an exhaust leak before the cat (didn't say which one) that he couldn't see, but felt from under a heat shield.
Having not seen that much of the car yet, I'm not familiar with the exhaust - should I be scared that I have have a cracked converter? I'm picking it up tomorrow morning.
I've got no warning lights on the dash.
Funny part - it's passed emission testing, even with the exhaust leak.
Last edited by mgb4tim; 06-20-2012 at 08:52 AM.
#2
Join Date: Mar 2008
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Does it have traction control? If so, it sorta sounds like the t/c is operating when it shouldn't be.
When I bring it home, I plan on pulling the throttle body off for a good cleaning (when I had the intake manifold off, I won't say how dark it looked inside the head) and replacing the air filter, but should I be looking for something else?
Cleaning the t/b is good on general principles. Not sure if it'll fix your problem, but it can't hurt
The mechanic passed it all, with 2 exceptions: the jerky pedal wouldn't let it go over 25 MPH, and an exhaust leak before the cat (didn't say which one) that he couldn't see, but felt from under a heat shield.
Cracked exhuast manifolds are fairly common. Oddly, they seldom are audible
Cheers
DD
#3
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Yes.
If you have t/c your throttle cable goes from the pedal to the t/c unit and a second cable goes from the t/c unit to the throttle body.
The t/c unit is an actual electric motor to will force the throttle back. You can feel it at the throttle pedal
Cheers
DD
#5
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Can I guess that it uses the ABS sensors and that they may need a look into?
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