Bog at launch
Thread Starter
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
Bog at launch
My 92 LT1 has a bog if I hit it from stop or very low speed. Once the RPMs get up, its fine. Not a miss, just a bog down. Does not seem to affect it at higher speed / RPM. 70k miles, all stock.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
I'm thinking fuel pump pickup in the tank...
What is your fuel level like??
C-4s are know for stumbling from slow speed or in a corner if the fuel level is low. Try filling it up with fuel and doing a few "hole shots" with it. It will probally clear right up.
Will
What is your fuel level like??
C-4s are know for stumbling from slow speed or in a corner if the fuel level is low. Try filling it up with fuel and doing a few "hole shots" with it. It will probally clear right up.
Will
Melting Slicks
Joined: Nov 2003
Posts: 2,679
Likes: 1
From: South Amboy NJ
Originally Posted by rklessdriver
I'm thinking fuel pump pickup in the tank...
What is your fuel level like??
C-4s are know for stumbling from slow speed or in a corner if the fuel level is low. Try filling it up with fuel and doing a few "hole shots" with it. It will probally clear right up.
Will
What is your fuel level like??
C-4s are know for stumbling from slow speed or in a corner if the fuel level is low. Try filling it up with fuel and doing a few "hole shots" with it. It will probally clear right up.
Will
Any time I run less than half a tank, the car bogs on the launch.
Thread Starter
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
mo info
Fuel tank was full with high test, fuel pump is new, been a while since filter, plugs and wires changes. This is a bog, which to me is different from a miss.
I would think a lack of fuel (filter or pump) would get worse at higher speed/rpm, but it does not.
If the plugs or wires were bad, it seems like that would show up at high speed/rpm also.
The TPS sounds like a possible. Anyone know how to test it?
thanks
I would think a lack of fuel (filter or pump) would get worse at higher speed/rpm, but it does not.
If the plugs or wires were bad, it seems like that would show up at high speed/rpm also.
The TPS sounds like a possible. Anyone know how to test it?
thanks
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Originally Posted by BlackRoseLT1
Any time I run less than half a tank, the car bogs on the launch.
Thread Starter
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
TPS or EGR?
I put my Autoxray 5000 scan tool on the Vette. TPS voltage reads 0.66 at idle and 4.05 at WOT. The scan tool did show me a code 32 (EGR). Could this EGR code be part of the bog problem?
Last edited by dburgjohn; Sep 5, 2006 at 04:03 PM.
Thread Starter
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
still fighting
Checked out EGR, it is working fine. Fuel pressure good, injectors read good with meter. any other ideas about this bog that feels like a lean-out condition only on a launch from full stop or very low speed. High speed launch is great.
Drifting
Joined: Jun 2006
Posts: 1,702
Likes: 254
From: Woodinville, WA
Hmmmm ttt. Ill be interested to see where this goes, I haev the same problem. If my rpms are up around 2-3 and I step on it I get almost instantaneous speed. BUT if I try and start it from a stop or low speed roll, i have about a half to 1 second delay before the gas kicks in.
Basically, Ive got enough time to put the pedal on the floor before it does anything... on a stock 95. I think ill go and check all the aforementioned things..
Basically, Ive got enough time to put the pedal on the floor before it does anything... on a stock 95. I think ill go and check all the aforementioned things..
Thread Starter
Melting Slicks
Joined: May 2003
Posts: 2,076
Likes: 281
From: Dyersburg TN
wish I could
Originally Posted by RRT vette
Did you fix the EGR code?
