i have a 2008 evo x, sometimes when i cold start it the RPM's wont stop going down. i give it gas because i feel that if i let it sit it will turn back off. idk if this is normal

 

Check out TSB−10−13−002. This is a known issue with some of the stock relays. Your Mitsu dealer should replace them under warranty.

 

I don't get this problem with cold start, however, if the engine is already warm and I shut it down and turn it back on, sometimes, the revs drop and the car actually stalls. This has happened to me 3 times, but I'm not sure what the cause may be.

Any ideas?

 

kHa
D the same problem on the X ,just took it to the dealer had them reflash the ECU for free and had no problems then..

 

This could be any number of things dude... Here are a few things that can cause this:

1. Vacuum leak.. allows air to get in and stall the car out.. A hose clamp or just the hose fitting..

2. Your Idle air control (IAC) may not be functioning properly.

3. Intake manifold gasket leak..

4. Improper fuel atomization.. When cold the injectors have a bigger clearance to the bore they fit in.. As you heat up, the clearances get smaller providing a better seal. This maybe ur case.


Your best bet is to hook up a scan tool and check your long term fuel trim and short term.. If they are really jacked up, your intake tract is leaking somewhere..
If when you start ur car and the engine RPM does not climb to like 1.5-2k and drop down, known as engine flare, your idle air control is being a little *****.

Also did you have ur car tuned? Your open loop maybe done wrong..


Cheers and let us know what it was..

 

I haven't had the car tuned, but I will be doing the ECU reflash soon. I have an 09, brand new. Has about 3000 km on it now, but the hasn't shut down on me in the last few weeks.

I'll keep you posted though. Thanks.

 

Awesome man. Good luck.

 

thanks i will let my dealer know

 

any mods?

 

Same question as above?

 

Bone stock beside the Advan RS's

 

Did you find out what's up with this thing bro?

 

Stock is good! Dealers in our area are uncooperative when it comes to mods on Evo's.