Running rough in 6th gear
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Joined: Nov 2011
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From: Rock Hill South Carolina
Running rough in 6th gear
When I shift my 1989 Corvette into 6th gear it runs noticeably rougher. It vibrates more and isn't at smooth. This doesn't matter at what speed, 60mph+. When I accelerate in 6th gear it does the same thing. Shift into 5th and it runs smooth. Just 6th gear is giving me a problem.
New AC Delco plugs and MSD Streetfire wires, not sure if this has anything to do with it, but I did notice it after I switched them out, but honestly I've only been able to drive the car a few times so I might not have noticed previously.
Any advice? Input? Has this happened to anybody else?
Thanks in advance
New AC Delco plugs and MSD Streetfire wires, not sure if this has anything to do with it, but I did notice it after I switched them out, but honestly I've only been able to drive the car a few times so I might not have noticed previously.
Any advice? Input? Has this happened to anybody else?
Thanks in advance
Last edited by oifcombatvet; Nov 10, 2012 at 08:35 PM.
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Joined: Oct 2005
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From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
My "guess" is your shifting into 6th gear too soon and/or trying to accelerate from too low of an rpm.
When it runs rough, what rpm is your tach displaying?
Only use 6th for your final cruising speed on the freeway.
If you need to accelerate very much, you should always drop down a least one gear and perhaps 2 depending on the situation.
When it runs rough, what rpm is your tach displaying?
Only use 6th for your final cruising speed on the freeway.
If you need to accelerate very much, you should always drop down a least one gear and perhaps 2 depending on the situation.
Race Director
Joined: Oct 2005
Posts: 11,772
Likes: 177
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
