Okay so I have a 2006 Mitsubishi Lancer ES 2.0l Automatic. Today I was driving to get some errands done but I noticed that for some reason Stella (My Car named after a dog that passed away) Was struggling up the hill. Now This hill I can hit up to 95mph going up before it flattens and I hit 100mph. Though once the light turned green My car wasn't accelerating as fast as it usually does (Note I drive my car hard but I know my car when something is up or off with it) and as I started going up hill I was struggling to hit 60. Shifting and hitting a higher RPM seemed as if I was fighting a demon in my car and I could barley even hit 80mhp before it flattened out. I am on this road every day before this with no change and after passing said hill. I entered another area which is more hills ofc but in this area I can hit 50-60mph no problem. Car once again struggles to hit said speed which isn't usual of her. This is super urgent bc I am a delivery driver for a pizzeria so I need my baby to be healthy. I ran some tests on my OBD2 and came back with no codes. She sounds normal except for the fact that Generally at a light I tap the gas just enough to where there is wheel spin but not too much ofc. Though today she could barely even do some wheel spins at the lights. PLZZZZ help me I need to figure out what's up as soon as possible. round 85k miles and it's a really clean car as I do oil changes and all important general maintenance on my own.

 

Check to see if your air filter is clogged.

 

check plugs maybe it needs a tune up