2800rpm Dead Spot

jtmforever

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This is my second 93 mark viii. I've noticed that my first 1993 mark viii that I had, when I stomp on the gas pedal from a standstill, it revs effortlessly to 6000rpm spinning the tires. But the second 1993 mark viii that I have now, when I stomp on it from a standstill, it revs up to about 2800rpm, pause, and then it pulls hard without spinning. Why is that
 
but i notice mostly all mark viii have that 2800rpm lag. For some reason the first 1993 mark viii i had didn't have this lag and reved up easily
 
My 93 revs up fine past 2800 rpm without a pause. IMRC's are supposed to open at 3050 RPM, 2800 is a little before that so maybe it's something else?
 
Maybe your first Mark had a better factory tune, allowing it to break the tires loose.

Logically, 2800 sounds about normal until the car gets rolling (since tires aren't breaking loose)
 
My 93 revs up fine past 2800 rpm without a pause. IMRC's are supposed to open at 3050 RPM, 2800 is a little before that so maybe it's something else?
The stumble is the IMRC opening. Just cause the tach says 2800 does not mean the car is at 2800rpm. Not only is the factory tach usually off by 100 RPM or so it is also slow to respond.

IMRCs are prolly dirty and sticking a little. Car commands them to open, sprays fuel since it expects them to open and they stick for a split second so the car runs rich for a split second and falls on its face for a split second.
 
As i here what you saying is the car has a small window of lower acceleration
This sounds normal to me as about that rpm your torque converter no longer is multiplying torque and the imrc's are not open. The car at that time is still below torque peak and hp peak this is why everyone puts in a big stall.
 

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