Car Dies

[gabedrummin]

I have durametrics software .When I got the car it had a Porsche replacement, the original had an ims issue . This motor had low oil pressure when I got it so I replaced it . Car idle is normal at 700 rpm . The tac dose not hunt , rpm is steady. With the software it fluctuates between 700 and 740. If I accelerate slowly it will accelerate with no problems . If I push the pedal rapidly it bogs and runs poorly until the rpm is above 1000 to 1500 when I pull my foot off the pedal rpm drops below 300 for a few seconds then returns to normal at 700 . And some times it will die .It will immediately restart and idle normal .Thank you guys for the help.

[blue62]

Originally Posted by gabedrummin

I have durametrics software .When I got the car it had a Porsche replacement, the original had an ims issue . This motor had low oil pressure when I got it so I replaced it . Car idle is normal at 700 rpm . The tac dose not hunt , rpm is steady. With the software it fluctuates between 700 and 740. If I accelerate slowly it will accelerate with no problems . If I push the pedal rapidly it bogs and runs poorly until the rpm is above 1000 to 1500 when I pull my foot off the pedal rpm drops below 300 for a few seconds then returns to normal at 700 . And some times it will die .It will immediately restart and idle normal .Thank you guys for the help.

Sounds a bit like fuel delivery issues.
Once your at 1000-1500 RPM will it accelerate normally to wide open throttle.????
regardless of whether you accelerate fast or slow???

You may want to do a fuel pressure test at the fuel rail and a fuel volume flow test.
Those tests will tell you if there is a problem with the fuel pump or fuel delivery to the injectors.

Vacuum test is still a good idea so we can start to rule some things out.

When was the fuel filter changed last???

Have you recalibrated the E-gas pedal???

Also look at your throttle position with the Duremetric. work the gas pedal with the Durametric hooked up and see if the signal % open seems right. things like 50% or near when you hold the gas pedal half to the floor. 3/4 pedal to the floor =75 % or close on the software.

[gabedrummin]

The fuel filter was done when the heads were replaced .Sorry I have done so much work to this car I forget somethings . I did test gas pedal and the software says it correct . How do you reset the gas pedal ?

[blue62]

Originally Posted by gabedrummin

The fuel filter was done when the heads were replaced .Sorry I have done so much work to this car I forget somethings . I did test gas pedal and the software says it correct . How do you reset the gas pedal ?

To recalibrate e-gas pedal:
With car setting level.
Disconnect the battery for 15-20 minutes this will allow the ECU to drop learned settings.
Reconnect battery.
Turn key to on position for 1 minute.
Do not start.... do not touch the gas pedal.
Turn key off for at least 10 seconds.
Start car.
After you start the car it can take a few minutes for idle to settle in and smooth out because the ECU is relearning some settings.
Take it for a drive and see how it acts.
Let me know if it changes anything.

[gabedrummin]

Yes sir .Thank you sir.