odd behavior in overdrive, any thoughts?
#1
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Location: MA
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Car: 89 Formula 350
odd behavior in overdrive, any thoughts?
I have a Formula 350 with about 50k miles on it and i noticed that if i break 75mph on the highway in OD suddenly the ride gets oddly "rough". Like, there is some sort of slight shutter/shake that i can feel through the front end. What's strange is that if i drop it down into regular Drive and maintain the same speed everything smooths right out. Any thoughts?
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: odd behavior in overdrive, any thoughts?
You've probably got a fuel-delivery or ignition problem.
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Car: 1991 RS Vert
Engine: LO3, 305, TBI
Transmission: 700R4
Axle/Gears: 3.42
Re: odd behavior in overdrive, any thoughts?
Although it should run efficiently at this setup (assuming vehicle in perfect working order), it isn't making a whole lot of torque. Therefore, if the fuel delivery or ignition components aren't up to snuff, you can experience similar problems as you describe. For instance, even a slight grade increase in the roadway, or a sudden headwind can cause stuttering.
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