This is a known problem...
..WW
no throttle response after hard turn
Thread Starter
Pro
Joined: Feb 2009
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From: charlottesville Virginia
no throttle response after hard turn
I autocrossed my car for the first time at carlisle and it went pretty well. However, when exiting a corner the car would not respond to the throttle. At first I thought it was the trans acting up and not engaging into 1 (auto) but then realized the car was not even revving up to correspond with the pedal. When I tried feathering the throttle through the turn this did not happen and it ran fine, but if I tried to coast through it always would act up. Any ideas?
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
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St. Jude Donor '12
Le Mans Master
Joined: Sep 2006
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From: Phoenix AZ
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sounds like a little water in the tank or you are sloching some debris loose inside, and it is getting in the screen.
With fuel injection, that's kind of a tank issue
With fuel injection, that's kind of a tank issue
Team Owner
Joined: Jul 2004
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From: Hartford WI
I thought there was some sort of baffle to prevent problems during cornering? Obviously if you keep doing it for extended periods of time, that might be a problem but just for one corner, I don't think so.
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Team Owner
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From: Hartford WI
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
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St. Jude Donor '12
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From: Hartford WI
What has the filter got to do with the direction of the car? If it is clogged, whether it is standing still or not, what is the difference? Same with the sock.
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
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St. Jude Donor '12
When I replaced my pump in a Mustang it was a wonder it ever got any fuel from the amount of crud near the socks. My 92 was similar - lots of crud right where the sock went.
Shoot its just an idea, follow up on it or don't follow up on it - no skin off my nose.
Team Owner
Joined: Jul 2004
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From: Hartford WI
Crud in the filter or the tank moves around and creates a temp blockage.
When I replaced my pump in a Mustang it was a wonder it ever got any fuel from the amount of crud near the socks. My 92 was similar - lots of crud right where the sock went.
Shoot its just an idea, follow up on it or don't follow up on it - no skin off my nose.
When I replaced my pump in a Mustang it was a wonder it ever got any fuel from the amount of crud near the socks. My 92 was similar - lots of crud right where the sock went.
Shoot its just an idea, follow up on it or don't follow up on it - no skin off my nose.
Actually, it isn't my car that is having the problem, just wondering why the cornering has an effect.
Drifting
Joined: Jul 2007
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Here is an idea. When you go around a turn, more revs are required to move the outer wheel in the turn. I've noticed that effect on many cars when cornering hard. The transmission is tricked briefly. Does the rpm rise when cornering hard?
Team Owner
Joined: Jul 2004
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From: Hartford WI
Even with a full tank? As I said, I haven't had those problems even when I slid the car on a half tank. When I used to autocross, I ran with no more than 1/4 tank for weight savings.
Instructor
Joined: Mar 2000
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From: CA
When I autocross'd my 92, the fuel pump would suck air if the tank wasn't at least 3/4 full.
Le Mans Master
Joined: Jul 2007
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From: Tampa Florida
From what I've seen I think you've got a loose or shorting connector/wire in the pump circuit somewhere. When the harness/connector(s) moves the pump stops momentarily.
If it were me I'd change the in tank's fuel pump harness or at a minimum the connections on the harness inside the tank. The "crimp-on" connectors should be in stock available a most autoparts stores. Ensure the pumps sock/strainer hasn't come off and that it is making contact with the bottom of the tank. Note: The longer end of the fuel pump sock should point toward the rear of the car.
From what I've seen - these shockingly these super quick momentary fuel pump "blips" won't show up on a fuel pressure gauge....you just loose power for a fraction of a second in higher "G" loading type of a turn.
If it were me I'd change the in tank's fuel pump harness or at a minimum the connections on the harness inside the tank. The "crimp-on" connectors should be in stock available a most autoparts stores. Ensure the pumps sock/strainer hasn't come off and that it is making contact with the bottom of the tank. Note: The longer end of the fuel pump sock should point toward the rear of the car.
From what I've seen - these shockingly these super quick momentary fuel pump "blips" won't show up on a fuel pressure gauge....you just loose power for a fraction of a second in higher "G" loading type of a turn.
Thread Starter
Pro
Joined: Feb 2009
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From: charlottesville Virginia
I've done two autocrosses and some hard mountain driving since this issue with out problem, today I autocrossed again and the issue was back. It seems to only occur on heavy right turns, I had about 3/4 tank of gas as well. Any more idea's? I haven't had an opportunity to check the stuff which has been posted yet but thought a video might bring some more opinions, issue starts around the 44 second mark.