aahhhh problem

[justinhill]

i still cant figure this problem out it hessitates at 4 thousand rpm i flushed the fuel rail and fuel injectors but nothing but the codes that where sent to the ob2 scanner are p1400 p1104 p1105 anyone know

[BLaCk_1cE]

P1400 Manifold Differential Pressure Sensor Circuit Malfunction

P1104 Turbocharger Wastegate Solenoid

P1105 Fuel Pressure Solenoid

[justinhill]

for p1400 where is that sensor located

[BLaCk_1cE]

Something to do with intake manifold or or your exhaust manifold
loss of pressure in intake manifold is my guess. Could be also referring to the MAP sensor (?)

I have also heard of this code to be EGR Valve Circ Electrical Malfunction

Start by cleaning out the egr tube first to remove carbon buildup, check vacuum hoses/electrical connection to the EGR solenoid/valve (assuming you have EGR)

[justinhill]

yeah i do have it