Half Throttle Fuel Cut Problem

[kustomstoney]

My issue is whether the car is in gear driving or idling, I cannot get more than half throttle before fuel cut. I recalibrated the TPS, and when I look at the MAFT-Pro the TPS reading works perfect with the engine not running but in the key on position. When the engine is running, the TPS reading is at .52 sitting idle but when You push the throttle the TPS reading goes to .68 then jumps to 2.15 then to WOT 3.5. Then if I unplug the TPS I have a reading of .15 which before when I unpluged the TPS it read 0. Another mechanic said it is an intake leak, but I don't think so. I have done research and can't find a solution. Thanks.

Also, I am running in Speed Density. I don't know if that matters or not.

Ok, I installed and adjusted a new TPS. Started the car, idled fine. Pulled out and ran down the road to 70 and fell flat on its face. Also, the fuel dampner has been leaking fuel. Before I pulled out it was dry, when I got back to the garage it was soaked with fuel. It isn't FC. When you hold WOT the car just sounds like it is missing and will not rev any higher than 2200 RPM. Also I am getting Codes 24 and 35. Any thoughts would help greatly. Thank You.

 

[radiod]

Intake/boost leak is a possibility, but with the MAFT hooked up it's going to be hard to tell whether it's that or something with the MAFT wiring. Any way you can put the stock AFM setup back in and eliminate MAFT wiring for sure? That would be my first suggestion.

 

[kustomstoney]

Well I still have good vacuum, No I am not going to put all that back on. It happened all of a sudden, and When I unplugged the TPS it would let me rev the engine with no fuel cut. Then I recalibrated the TPS and know whether the TPS is plugged in or unplugged it is cutting fuel. I don't think it is the MAFT because it only receives the TPS signal and does not give a signal, so why would that effect it??

 

[mkiiichip]

When you look at a TPS on an oscilloscope (which graphs voltage), as you open the throttle and monitor TPS voltage, there should be no jumps or dropouts in voltage. If you move the throttle smothly the voltage should change smoothly.
Digital volt meters make this sort of diagnosis difficult, if you dont have access to an o-scope, an analog volt meter works (with a needle readout). As you can see glitches in needle (tps) movement.