1992 Hesitation while cornering

[jrclark32]

I'm having issues with my '92 while accelerating around corners. If I take off in a straight line, I have no issues at all -- but if I gun it around a corner, or try to accelerate out of a tight turn, it hesitates as though the fuel has been cut off.

The only thing I can come up with is that the pick-up in the fuel tank is in a place where it can't get fuel when the car is in a hard turn, but a full tank doesn't seem to help it (a very low tank does, however, amplify the problem dramatically).

Has anyone else experienced this? Any ideas on possible solutions?

Thanks!

 

[Newfydad]

Perhaps ATC action. Happened to me once during a sharp left uphill turn under hard acceleration.

 

[Toms007]

Is your ASR light coming on? If the computer senses rear wheel slippage, then it will shut down fuel and apply the brakes to correct for the tire slippage.

 

[jrclark32]

No... the effect is similar to the ASR correction -- but the hesitation is bad enough that there isn't any wheel slippage. And, disabling the ASR doesn't make any difference.

 

[Tuna]

How much fuel was in the tank?

C4's are notorious for stumbling out of a "hard" turn when less than 1/2 a tank like at an autocross or just max performing it on the streets.

 

[jrclark32]

The problem is still there with a full tank -- but I first started to really notice it when the tank was somewhat low. If it's around 1/4 tank I can't even make it around an exit ramp without problems.

What do the autocross guys do to fix the problem??

-John

 

[Tuna]

What's the fuel pressure?

When was the fuel filter last changed?

 

[JimBobC4]

While I have not seen it on 'vettes before, I have seen situations where the fuel pump mount was broken in the tank. The G force would push the pump to one side and pinch off the supply line. :W

I have also seen situations where the strainer screen that is attached to the fuel pump was weak and would bend over to one side with a big fuel slosh, creating a fuel starvation issue.

Just a thought .