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2002 Mitsubishi Lancer has sharp power drop almost stalling and occasionally when accelerating mostly in 1st 2nd gear only happened sitting unused high heat until midday?

Here are some possible causes:

- Fuel System Issues:

- Clogged fuel filter

- Faulty fuel pump

- Dirty fuel injectors

- Air Intake System:

- Dirty or blocked air filter

- Faulty mass air flow (MAF) sensor

- Ignition System:

- Worn spark plugs

- Faulty ignition coils

- Transmission Problems:

- Low transmission fluid

- Worn or damaged transmission components

- Engine Temperature Sensor:

- Faulty or incorrectly positioned temperature sensors can provide incorrect information to the engine's computer, causing issues with fuel and air mixture.

- Vacuum Leak:

- A vacuum leak can cause a drop in engine power and stalling. Check for leaks in hoses and gaskets.

- EGR Valve:

- A faulty EGR valve can cause the engine to run rough and stall.

It's important to get the car diagnosed by a professional mechanic to determine the exact cause of the issue.