Does anyone else have this issue? My car cuts off when it's warmed up during these cold months. (When it dies completely, I just let up on the clutch and let it pop back over like Daniel Larusso. ) No issues while the car is cold. Only after all the juices get flowing and everything is nice and toasty. It wasn't doing this when it was still decent out. I got the car in October and it started stalling out when the snow started to fly. It's not a huge detriment since I can correct it while I drive but I want to know if I'm breaking stuff in the long run by just driving on it like this and if there's a fix?

 

uber.

Your car should definitely not just be turning off like that.

1. What symptoms are you seeing when this happens?
2. Does it seem to be mechanical, or electrical?
3. Does your vehicle have modifications? If so, what are they?
4. Is your vehicle tuned?
5. What is the mileage?
6. Are you getting any check engine lights?

 

Defrost turned on?

I only ask because my car does the exact same thing but only when defrost is on. I believe its common with our cars.

 

Turning the defrost on activates the air conditioning compressor which in turn switches the iscv settings the engine is running off of. Something to think about.

 

Sirmario. Welcome...

No. It is NOT common with our cars at all.

Who would produce a vehicle that died when the defrost is turned on? Let alone a motor that has been used for nearly 3 decades and has proven to be one of the most reliable platforms available.

If the front defrost (read: AC) is turned on, and it causes your car to stall, then the problem is simple, and has to do with excessive drag on your AC system. I'd start by inspecting the clutch on the compressor unit which DOES have an affinity to need adjustment more than it should.

But your vehicle should absolutely not be stalling out for any reason, and no, it is not common.

 

^^^ haha at this guy for sure. He is totally right though. My $40,000 Evo IX stalls out when I turn the ac on, but hey, that's normal. My car doesn't actually do that I just couldn't resist commenting on propilot's hilarious comment.

 

It is not common. Have a tuner look at your car.

 

Well crap! I've searched it on here and have read quite a few times that its common, hence me dealing with it. :|

I thought it was weird that such a renowned car would have such an issue.

I need to get the car retuned soon and will ask them to take a look.

Thanks for clarification guys

 

It could be related to the tune. Not enough info provided to really make good speculation. Its not normal, your car shouldn't stall ever. If you havent had it done recently, a boost/vacuum leak test and plugs may also be in order.

 

LOL I was like dammit!

Ha... it's cool. Sadly, the Evo's seem to lend themselves to a large group of people that expect it to be a Porsche, or a GTR... or on the other spectrum, people that seem to be able to barely afford the rather expensive, and certainly high maintenance aspect of ownership. As such... you end up with a lot of bad info floating around.

I'm certainly not trying to flame anyone, since obviously... the best way forward is to simply offer my extremely limited amount of knowledge. But the classic "YMMV with whatever you read on the internet" would ring true with this, and any online community.

Keep on keepin on...

 

OK, I've been driving it without the AC on and the issue happens quite less and 100% of the time it will correct itself. I'm not chalking it up to it being a common issue since I also believe that this shouldn't be happening.

 

1. Symptoms? Engine just stalls after it's warmed up.
2. From what I can tell it's mechanical
3. I've got mods. They are all listed in my garage. For the sake of not making people leave this thread to help, here they are...
   - Synapse Engineering Intercooler Pipes
   - Forge Recirculating BOV
   - Evo9 Turbo
   - Gates timing and balance belts
   - Mistubishi OEM EVO9 tensioner
   - Mistubishi OEM EVO9 pulleys
   - Mistubishi OEM EVO9 water pump
   - Unknown exhaust
   -CX Racing Coilovers
   Keep in mind, this is the list handed over to me by the previous owner.
4. As far as I know, no tune, just parts
5. 130k+ but the previous owner said that it was rebuilt, rebuild has 64k+ on it
6. I had a few P codes but I accidentally cleared them when I was messing around with Torque Pro last night. I'll post them up as they come back, if they come back.

 

Ok... a couple things.

1. If you're running a different BOV, pipes, and turbo... it needs a tune. That said, it's strange that this wouldn't occur more often other than temp related...

I think I'd suggest a boost leak test just to get it out of the way... otherwise, do you have an AFR gauge? What are the readings on that? I'm wondering if there's an O2 issue (though you'd get a CEL typically... unless it's disabled, but maybe those codes...) when it's switching between closed loop, and open loop ops.

 

Those codes would have helped. If it runs good when cold then your high idle and rich warmup are working on your open loop. You hit closed loop when your car warms up and maybe the front o2 sensor is bad and its leaning the car out to the point where it dies?

 

Is it swinging rich or lean when it does this? Do you have a wideband? My car has had this issue where every once in awhile when I pull up to a light it will swing all the way lean and then it starts losing vaccum (going from -17 to -10) and the rpm starts to suffer. If I tap the gas it jumps right back up to 14.7 @ idle. I recently rebuilt the throttle body so more air was getting past the throttle plate (I cleaned all the stuff off the back of the plate, yeah I know...) causing it to occasionally go lean until the ecu could correct it by dumping a bunch more fuel in the mix. I finally fixed it last night after a lot of trial and error but I adjusted the iscv demand table at "fully warmed up" so it didn't use so much demand seeing as how more air was getting past the throttle plate it didn't need that much demand at idle. Totally fixed the issue!!!! Have a tuner look at it, its gotta be something in your tune.