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Running rough accelerating

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Old May 11, 2017 | 04:29 PM
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Default Running rough accelerating

I have a 79 C3 with TPI and a 700R4. Two days ago I noticed all of a sudden when I would accelerate the car would shake the steering wheel a little. I thought it might be because the car has not been driven much since last summer so I took it over the mountains yesterday to clean it out and get rid of any flat spots the tires might have picked up from sitting, hoping thats what it needed. Well it wasn't. Now the whole car shakes on both acceleration and deceleration. The harder I accelerate and decelerat the worse it gets. The funny thing is no matter how fast or slow I go if I hold a constant speed it runs great it even runs smooth stopped at lights. Any ideas?

Last edited by Zorro O; May 12, 2017 at 12:52 AM.
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Old Jul 14, 2017 | 07:46 PM
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You should post this over on ThirdGen (those guys know everything about TPI motors) or SpeedTalk (those guys know everything about all motors).


TPI and a 700r4 in a 79 C3 -great choices! I put a 4L60e in my 79 and I'm putting the FIRST fuel injection TPI-style intake in it this winter.

Adam
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Old Jul 14, 2017 | 08:55 PM
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Originally Posted by NewbVetteGuy
You should post this over on ThirdGen (those guys know everything about TPI motors) or SpeedTalk (those guys know everything about all motors).


TPI and a 700r4 in a 79 C3 -great choices! I put a 4L60e in my 79 and I'm putting the FIRST fuel injection TPI-style intake in it this winter.

Adam
Adam it's the C4 guy that are experts on the TPI. When you install one they are a great resource. I found the problem some time ago. It was not the engine it was an adjustable strut rod adjusting its self out of adjustment making the car shake when accelerating and decelerating.
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Old Jul 14, 2017 | 09:57 PM
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What computer do you have?
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Old Jul 14, 2017 | 10:34 PM
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Originally Posted by gjohnson
What computer do you have?
It a GM I think from a 90 corvette. I've been trying to figure out how to install a more modern one.
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