Today I went to start my car after it had been sitting outside for 2 hours (more or less) and turned the key to start, and when the car began to start as usual, it acted as though it was stalling, with rpm's not reaching over 100, it sounded like an engine running out of gas with the whole pusating feeling.. (the car was in neutral and clutch was to the floor) after sounding as though it was going to die, the rpms finally jumped up to standard idle (after about 8 seconds).. Any ideas what this could be? Car has most recent flash from dealer and mods are as shown below, never have had this issue before. 6650miles on ODO...

 

Do you mean it wouldn't go over 1000rpm? I'm pretty sure the engine won't run below a couple hundred rpm.

A stumbling idle is normal with the X. Do you have any mods without tuning it? Have you done the factory reflash?

 

^^^ what i was thinking.. would sound like a chopper at that rpm

 

This is the same problem that I am having with my MR. The only difference that my vehicle rpms will be around 400-600 and it will turn off after 10-20 seconds of doing this.

I posted about this yesterday and about 60 people read it with no replies. I guess you and I are by ourselves in this problem.

 

No, I literally mean like 100 rpm. My car sounded like it was going to turn off but then rebounded just to repeat the same process, I used to have the issue with the squirley idle but that was fixed after the new map from mitsu and my AEM intake.. this is something different.

 

What are temps like outside and how full (or empty) was your gas tank?

http://en.wikipedia.org/wiki/Vapor_lock

I've had some mild symptoms of this during hot weather and starting the car after 30-45 minutes, it usually clears up within a few seconds though. Blipping the throttle will usually clear things up pretty quickly. I think temps peak after parking the car around the 20 minute mark and then slowly taper down over the next couple hours.

 

This could be what is happening to me. When my car shut down it was off for about 30mins, the temp outside was around 90-94, and my AP said the intake temp was 144(short ram intake). Is there a way to stop vapor lock?

 

What happens sometimes is the fuel in the lines gets so hot that it turns to vapor. This could be caused by temps from outside components over heating the lines. If it's a one time thing I wouldn't worry about it. If it happens consistently there is probably a problem.

Most modern vehicles are designed in such a way that this is not an issue. If it keeps happening it could be a problem with your fuel pump or your injectors and you should have them checked out. Your case sounds like it was a random one time thing.

 

yeah it does, but those random one time things are what scares me.. because you never know whats going on up front.

 

^feel the same way here. Well at least I have something to tell the mits mechanic (taking my car in just to give me a peace of mind). You know make it seem like I know what I am talking about.

 

have you guys checked the hose that goes to the fuel pressure regulator?

 

Hose is quarter inch hose right next to the oil dip stick. If it popped off put it on and go buy hose clamp. Mitsu did not put one on.

 

https://www.evolutionm.net/forums/ev...s-do-asap.html

pic in this thread

 

checked that , its fine, and always have been.. I don't know, I guess I will just have to get used to my car doing wierd things, even though for 40k I shouldn't settle for anything less than perfection.

 

Hey I've been having this problem as well. It hasn't been a one time thing, and there isn't anything constant about it either. I'm taking the car into the dealer soon for the fuel line recall and will have them check it out but my car is doing the exact same as yours. It almost sounds like it's going to die and it'll shoot up. On the flip side though, I've had it do the opposite, where the RPM's have gone as high as 1500 to 2000 rpm while backing up out of my drive way? The RPM's don't seem to want to go down until I put it in first and drive off, even when I put it in neutral it will still stick at 1500 +. Something is definitely not entirely right. I'm curious to see what mitsu says about this problem.