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car sputtering with no overdrive

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Old Sep 4, 2007 | 07:27 PM
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Default car sputtering with no overdrive

I noticed today while driving my 86 corvette if I punch it off the line with my over-drive switch off and shift through all gears I get this sputtering from my exhaust. Is this the factory govenor keeping
me from going to fast ?

Last edited by takovr; Sep 4, 2007 at 07:42 PM.
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Old Sep 4, 2007 | 07:51 PM
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From: Lacey WA RVN 68-69
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There is no "factory governor" in Corvettes. There is a fuel cut-off at around 5500 RPM or so.

Could be a clogged catalytic converter if you experience this at lower RPM's

What RPM are you turning when you hear/feel this?
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Old Sep 4, 2007 | 07:53 PM
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Default wot

Im running at wot from 1st to 4th gear. rpms about 4,500

Last edited by takovr; Sep 4, 2007 at 08:02 PM.
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Old Sep 4, 2007 | 08:47 PM
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An L98 in good stock tune should be able to run 5000 RPM or a little over in each gear. 4500 should be no sweat in terms of running smoothly and strong. My 87 will easily hit 5500 RPM before the fuel cutoff.

I would also look at the condition of the air filter, spark plugs, plug wires, and the distributor cap. Check the coil output and fuel pressure, and maybe do a compression test. Replace the fuel filter too.
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Old Sep 4, 2007 | 08:51 PM
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Default thx

thank you for all the help, I"am new to working on my 86 corvette I replaced the cap and rotor the other day. but did not replace the plugs and wires. I don't have a timing light to give it a good tune-up. But I will learn to tune up my own car.
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