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1998 Accord - Stutters around 40MPH

  #1  
Old 10-23-2018, 03:41 PM
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Default 1998 Accord - Stutters around 40MPH

1998 Accord 4 cyl, auto transmission 230,000 miles

Recently while I am driving the car, it would "stutter" for maybe 3 seconds at about 40mph. It is not harsh or anything.
The best way to describe it is that it shivers like a human does when his body is cold. It still seems to maintain power, but not sure.
One time when it happened I let off the gas- to try figuring out what it was and it stopped when I let off the gas. But this could be a co-incidence that I let off the gas at the same it it was about to stop stuttering anyway ( 3 seconds).
It does not do this when idling or at stop lights. It has never done this while under 30 MPH.

At first I thought it was shimming, but I doubt that it is, and I also doubt it is the transmission.

I almost feel like it could be sparkplugs/disrtibutor cap/ or rotor. But why would it only do this at around 40MPH? If it was the sparkplugs, dist, or rotor, I would expect the problem to occur at various times.

The only thing I can also say it accelerates fine, shift gears fine, and does not hesitate.
Also the stuttering is random. When it happens, it may not happen again, until the next day.
 
  #2  
Old 10-24-2018, 06:01 AM
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Less harsh then misfiring? Get any misfire codes or anything from the check-engine light?

Has it been happening long enough to rule out something funny in 1 batch of gasoline?
 
  #3  
Old 10-24-2018, 08:22 AM
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No check engine light. It is less harsh than a misfire, but to me, there is a rhythm.
That's why at first I thought it was a wheel bearing or CV joint, but it was MUCH faster. like 5 times faster than the wheel rotates.

I can't rule out bad gas, since it's been doing that for a week ( just put in new gas yesterday). But I would think it is not, since it accelerates fine.
Again, it ONLY does this around 35-45 MPH and cruising on the road.
 
  #4  
Old 10-24-2018, 12:20 PM
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Decided to take the shotgun approach

1) get 4 new tires, they were due anyway
2) alignment- at least they can check CV joint, tie rod ends, and wheel bearings
3) Will check sparkplug wires- pull them out and reconnect
 
  #5  
Old 10-24-2018, 01:14 PM
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Check plug wires in the dark. With the engine cold, open the hood & start the engine. Look for arcing, maybe just a dull blue glow. Anything like that indicates the insulation on the plug wires is deteriorating. A fine spray of water from a windex bottle helps make it more visible.

Does the stuttering happen with moisture? Either driving through a puddle or anything like that?
 
  #6  
Old 10-29-2018, 03:30 PM
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Well - it's been 5 days and so far so good. I am likely to think it had something to do with the sparkplug wires. I unplugged them and plugged each end back on.
If it acts up again, I plan to put new spark plugs and wires on.
 
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