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1988 chevy bucking

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Old September 2nd, 2022, 6:34 PM
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Question 1988 chevy bucking

Hi, I have a 1988 chevy s10 with a 4.3. when I drive the truck after it warms up it will buck going down the road and I have tried figuring out what this problem is for over a year now and I can't seem to find anybody with the 4.3 having the same problems. I have put brand new plugs, wires,coil,rotor,cap on the truck I have also checked the fuel pressure and egr valve and all are good on that end.i was wondering if anybody up here could help.
Old September 3rd, 2022, 12:22 AM
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Originally Posted by s10tahoe88
Hi, I have a 1988 chevy s10 with a 4.3. when I drive the truck after it warms up it will buck going down the road and I have tried figuring out what this problem is for over a year now and I can't seem to find anybody with the 4.3 having the same problems. I have put brand new plugs, wires,coil,rotor,cap on the truck I have also checked the fuel pressure and egr valve and all are good on that end.i was wondering if anybody up here could help.
Could be your TBI needs repair or you have a vacuum leak. Replace your fuel filter.

Last edited by oilcanhenry; September 3rd, 2022 at 12:26 AM.
Old September 4th, 2022, 12:19 AM
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Originally Posted by JoneMark
may be Dirty fuel injectors are among the most common reasons for why an accelerator becomes jerky. The dirty injector leads to your car losing power when you attempt to accelerate while at a stop and when you try to drive at a consistent speed. This is the result of an engine misfire and if your are a second owner than check out the previous record of services may be you found some of thing which you get rid of this problem and in this case Vin decoder can helps you simply put the vin number and you get the answer
I agree, but on a TBI unit, it might be faster and cheaper to chuck the twin injectors and put a new set on. Did it on a 1988 K-2500 Chevy. Worked like a charm.

Last edited by oilcanhenry; September 4th, 2022 at 12:22 AM.
Old October 14th, 2022, 4:17 PM
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Hi bro you can fix it
GM's attempt to correct the “Chevy Shake” was through addressing an issue with the transmission fluid. GM recommends “owners
replace the original transmission fluid with a lighter viscosity to correct the repair of the transmission and correct the shaking
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