4th gear stutter question

[krasuskyp]

My car has developed an intermittent stutter when I'm just lugging along in 4th gear on the highway. Drop 3rd and it's as if nothing happened. Hit 4th again, stutter.

I suspect a possible boost or vacuum leak maybe? I've not yet peeked around, starting first with your brains 8-). Either that or it feels like it's getting too much fuel at that rpm / gear maybe? I'm no rocket scientist tho...

No smoke or other symptoms. Runs 100% awesome the rest of the time. Started doing it out of nowhere - actually - after sitting 2wks while I was beaching it. But I've run new a new tank of fuel thru it since. Only happens once in awhile.

Any insight appreciated, thanks!

[rsrmike]

Is your o2 sensor plugged in? You could try disconnecting it.

[krasuskyp]

It is, and, I'll give that a try thanks.

[rsrmike]

So sweat, I hope that's it. They can cause a slight surge or stutter at light load if they take a dump.

Otherwise you may need to look into checking plug connector resistance, spark plugs, etc.

It "could" be injector related but I would think you had other symptoms, such as one cylinder being flooded when cranked sometimes, rough idle, etc.

What else guys?? geez you guys most be actually working...

[fredmeister]

Could be the fuel pump failing. Check/change the relays for fuel pumps in the engine panel first and then start trying to see if the pumps are making noise.