C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Engine stumbling

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Old Aug 23, 2016 | 06:59 PM
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Default Engine stumbling

Fellas got some new issues with my 1984 Vet. When I start the car up it idles very smooth ,when I hit the road it run smooth with no problems,when the speed get between 40 and 50 it go into a mild bucking or hesitation mode. After 50 it run smooth again. Wondering if it is starving for fuel or getting too much.Mind you this is just my theory. Pulled the plugs last nite they all looked good.and I tighten them down so they were good and snug. Already changed the fuel filter. So anyone has some input for me please speak up.
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Old Aug 23, 2016 | 07:26 PM
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Sounds like it could be your o2 sensor.
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Old Aug 23, 2016 | 07:36 PM
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Default 02 sensor

Originally Posted by antfarmer2
Sounds like it could be your o2 sensor.
If that was the case wouldn't the check engine light come on
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Old Aug 23, 2016 | 07:43 PM
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Originally Posted by Klgrayson
If that was the case wouldn't the check engine light come on
Mine never did they get old and slow. How many miles since it was changed?
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Old Aug 23, 2016 | 07:59 PM
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Default 02 sensor

Originally Posted by antfarmer2
Mine never did they get old and slow. How many miles since it was changed?
o2 sensor has never been changed,80,300 miles on the car
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Old Aug 23, 2016 | 08:30 PM
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Originally Posted by Klgrayson
o2 sensor has never been changed,80,300 miles on the car
Normal maintenance I would do it.
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