I have a 2004 x trail GT with SR20 vvl engine with turbo, when I suddenly accelarate there is a power loss and flat spot, when I ease off pedal the speed start taking up again. Any solutions?

SOURCE: Sudden loss of power while driving

One thing you should notice that could tell you if the the engine is misfiring is that the check engine light will flash. If it dose it is saying you have a misfire in either one or more cylinders. If the check engine light dose not flash then it could be more of a fuel pump related issue. but as I said 1st thing would be to check the code... then i could tell you whats going on. good luck

SOURCE: engine power loss

Inspect Wireset Damaged, worn, or deteriorating spark plug or coil wire(s). in this list u will find a answer to ur problem Shaun 2 Inspect Spark Plug Fouled, damaged or broken spark plug(s). 3 Inspect Fuel Filter Clogged or dirty fuel filter 4 Inspect Distributor Worn, loose or incorrectly adjusted distributor. 5 Inspect Distributor Cap Loose or cracked distributor cap 6 Inspect Distributor Cap And Rotor Kit Loose, cracked, or worn distributor cap and ignition rotor. 7 Inspect PCV Valve Plugged or damaged pcv valve. 8 Inspect Air Filter Restricted or clogged air filter. 9 Inspect Catalytic Converter Clogged, damaged, defective or faulty catalytic converter. 10 Inspect Automatic Transmission Improperly adjusted kickdown cable adjustment or internal transmission problems. 11 Inspect Fuel Pump Improperly functioning fuel pump or circuits. 12 Inspect MAP Sensor Improperly connected or faulty m.a.p. sensor. 13 Inspect Mass Air Flow Sensor Improperly connected or faulty mass air flow sensor. 14 Inspect Throttle Position Sensor Faulty throttle position sensor or throttle position sensor circuit. 15 Inspect Timing Specification Incorrectly adjusted engine timing. 16 Inspect Fuel System Pressure Incorrect fuel pressure being delivered to carburetor or fuel injection system.

SOURCE: 05 Golf TDI sudden loss of power. Turbo issue?

ecu problem! go and find someone with VAG-COM and get it checked for fault codes. glad i could help!

SOURCE: i have a volks wagen golf pd gt tdi 130bhp driving

sounds awfull like a dud airflow meter vw's are prown for them if there is no power u would think there was no turbo it would be defo a airflow meter

SOURCE: Power loss in 2004 Corolla Verso D-4D T2 at speed

You might want to check the MAF sensor(Mass Air Flow) and clean it with MAF/MAP cleaner. I am also kind of puzzled with this problem as I have a 2004 Corolla also, I only had power loss when my MAF went bad.