i previously had cams installed on my car with a tune but ever since then i been having idle problems that the car would have hard time keeping an idle during low speed turns.. went back for retune and found boost leak but was fixed... the front o2 was also acting weird with unstable a/f ratio on cruise and idle and spark plugs was worn but didn't get a chance to replace them... few week later the clutch took a **** so got new clutch in and also got new front o2, new plugs, new battery and car idled alot smoother, drives alot smoother but the car would want to die alot more at low idle during low speed turns or coming to a stop than before... lets put it this way... i went shopping and when turning into a parking spot, the car dies..on way home when coming to a stop in traffic...car dies, when turning to park my car in my garage..it dies...its getting very annoying and hard to drive... everytime car wants to die.. i notice it loses all oil pressure and a/f at 10.0 but thats reasonable since idle went down to 200rpm it barely builds any oil pressure... anyone have any idea what it could be or had similar problems??

 

i pretty much have the same problem, but i dont have cams. idle drops bounces back up comes down and SOMETIMES stalls... i have no idea why its the weirdest thing and it doesnt do it all the time. a friend of mine told me to check the oil right as i told him that and i have oil in my car its not the cleanest but not the dirtiest oil. so i can rule that out, i just dont know what it could be.

 

Reset the base idle either using Evoscan or a MUT tool. If you have a VTA bov fitted the problem can be more noticable.

 

does this happen with your ac on? typically when you turn the wheel your rpm's go up as well as when your a/c clutch cycles on and off. might just be your turning and have ac on and its just too much for the motor to handle and dies... you can get your tune done and have your idle raised a little more possibly but, there are other ways of fixing it but im tired and cant think right now ha.

 

Check your camshaft position sensor or sensors if its a 9.this can be a symptom of that

 

im dealing with the same thing. just my a/f are like 18. i cant find whats wrong with it.

 

i am running recirculated bov..synapse synchronic with evo kit... the car stalls with ac off, no accessory on whatsoever.. its worse when ac is on...im not sure what it could be... my tuner did raise the idle too but it just smooths the idle but still stalls at low speed turns

 

my other concern is the a/f does not stablize very well... idle or cruise is always bounching 13-17 a/f seem like

 

I am also having this problem. My friend that also owns an evo with cams and tune is also having the same problem. It also tries to die after ive just beat on it for only one block length. Im changing my oil this week hopefully it helps

 

who was the tuner?

 

I have a simular issue, when im parked car is cold and its cold outside, i let it idle for about 30secs and try to take off. And the idle will go down and then eventually die, and be a little hard to start. Like it sounds like it wants to but then will start. Im thinking this and your guys issues is a boost issue. At least mine may be a boost leak.

 

i had the same thing especially when the a/c is turned on.. i tried tuning but turned out to be a bad idle sensor

 

Sounds like a faulty idle air control valve.

 

Sounds similar to my problem wit the idle stumbling to low rpm and 10 AFR. I've changed the front o2 sensor, the IAC valve, checked for boost leaks and it's still happening.

The IAC valve was used so I *guess* it could have been bad as well, but the biggest thing that's helped for me is running the car in open loop below 2k rpm.

 

You said you have a new clutch, did you get a light weight diego
Flywheel? If you did, the flywheel acts just the same as quicker revs, it drops rpms quicker as well. I have the same issue ever since I got my exedy twin disk.