[Z06] AutoTap and Throttle Position question
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Instructor
Joined: Jun 2002
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From: San Diego CA
AutoTap and Throttle Position question
In trying to figure out a hesitation problem with the AutoTap (1-2 shift, nowhere near RPM limiter, car hesitates (like fuel starvation)), I observed that the throttle sensor goes briefly to 100% then drops to 99.75% and stays there (when the pedal is floored). Is this correct behavior?
Any other AutoTap tips to debug a hesitation issue?
Another question: Which O2 sensors are pre-cats and which are post-cats (B1S1, B1S2, B2S1, B2S2, etc.)? Looking at the graph, it appears the noisey sensors are pre, and the smoother sensors are post (want to make sure they are hooked up correctly).
SportsCars
Any other AutoTap tips to debug a hesitation issue?
Another question: Which O2 sensors are pre-cats and which are post-cats (B1S1, B1S2, B2S1, B2S2, etc.)? Looking at the graph, it appears the noisey sensors are pre, and the smoother sensors are post (want to make sure they are hooked up correctly).
SportsCars
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Re: AutoTap and Throttle Position question (SportsCars)
It has been a while but I will try and help here.
The TPS not reading 100% is not that unusual. Some F-Body drivers were modifying the throttle stop trying to get to a 100%. I don't believe anyone gained anything by doing so.
The fuel starvation issue sure does sound like rev limiter. (Been there/Done that) What does Autotap say your RPM is when you shift?
Can't help on the pre-cats sensors.
In looking back over some old Autotap files, I believe the pre-cat sensors are O2 Sensor - B1S1 O2 Sensor - B2S1.
Someone can confirm this. I haven't used Atap in some time.
[Modified by Chalky'sC5, 10:06 AM 7/2/2002]
The TPS not reading 100% is not that unusual. Some F-Body drivers were modifying the throttle stop trying to get to a 100%. I don't believe anyone gained anything by doing so.
The fuel starvation issue sure does sound like rev limiter. (Been there/Done that) What does Autotap say your RPM is when you shift?
Can't help on the pre-cats sensors.
In looking back over some old Autotap files, I believe the pre-cat sensors are O2 Sensor - B1S1 O2 Sensor - B2S1.
Someone can confirm this. I haven't used Atap in some time.
[Modified by Chalky'sC5, 10:06 AM 7/2/2002]
Thread Starter
Instructor
Joined: Jun 2002
Posts: 100
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From: San Diego CA
Re: AutoTap and Throttle Position question (Chalky'sC5)
Rev limiter and traction control are good candidates, but I'm shifting at around 5K and letting the clutch out easy. It doesn't hesitate every time, which makes it even more challenging to debug. Only after WOT, 1st to 2nd. Sure feels like it's either a fuel or computer/sensor issue. I'll have a C5/LS1/LS6 expert take a look. Maybe the car is fine and I just need to drive it harder. ;)
SportsCars
SportsCars
