As of being a newb. I have been dealing with this issue for months and can't seem to find a solution to it. I've changed the slave cylinder and got a new clutch for my car. It starts out smooth and runs smooth but once the motor gets warmed up the car loses power or it'll start to decelerating. Another thing is I would just be able to switch to 1st hear without stepping on the clutch when the motor is warm. It's only on 1st gear that I don't have to step on the clutch. I really need help with this. Anyone with who can give an answer is much appreciated. Thanks.

 

have you done the basics, boost leak test, charging system test? any wierd noises?

 

Sorry for such late reply but yes I have made every possible fix and check I can think of.

 

As far as putting it into first without the clutch I don't know why you would ever even try that and find that out???

Anyways, what mods are done to your car? Is it tuned? As far as a stock car goes your symptoms lead me to believe a clogged cat. Often times a clogged cat will flow when cold but once warm it becomes restrictive and chokes the engine. I once had a car that would idle ok but would not go above 3000 rpm no matter how hard you tried. Clogged cat was the cause. The higher the rpm that you desire the more air and fuel entering the engine and the more exhaust exiting the engine. So another possible cause is lack of fuel pressure. There are multiple potential causes. Any codes etc....

 

Sorry no codes. And Yes I wouldn't believe that I can go into first gear without stepping on the clutch but its true.

 

take your car to a good evo mechanic

 

I would agree, find a good evo mechanic to take it to. Sometimes another set of eyes/thoughts will find something you didnt see or think of!