I have a 2008 Lancer GTS (Manual), just over 300K KMS. I am having a few issues and unsure what the next thing to look for is. The problems include: The car needs to be boosted to start every time. (Not the battery it will do the same thing after 3 days of getting a new one, the battery has been tested and is perfect), Once started in idle and not in motion if the AC is turned on the RPM will go up and down drastically. Goes up to 1K then drops to nothing again and again (Not sure if it's relevant but it shakes the shifter when it drops down), When driving if the AC is turned on the car will i… Read complete

Vehicle will not accelerate at normal rate due to self preserving sensors kicking in

Mitsubishi Lancer 9 with a 4G94 MPI engine. When the fuel level in the tank exceeds 10-12 liters, during a sharp right turn or hard braking, the engine revs up and down between 500 and 1500 RPM for 2-3 cycles, and then stalls completely. This is ONLY noticeable when turning right or braking; it does not occur when driving straight or turning left. The fuel pump and fuel filters are new, and the tank is sealed. The fuel vapor recovery system is disconnected from the tank; a long, loud hissing sound is heard when the tank cap is opened. If the transmission is in neutral during a left turn or hard braking (the car has an automatic transmission), no problems are observed.

When i try to start my car, you can hear the starter spin loudly but it doesnt engage time to time, but when it does then everything works fine, i dont know if it has a relay or just a fuse, i need help, maybe switching it will help, ive changed two starters, one was paid for and the other for free because the old one failed but it still has the same problem.