About a week ago I was driving on a road close to my house when my cars RPMS got stuck. I tried to give it some gas but it didn't do anything. The RPMs on the gauge stayed the same but my car started slowing down. I took it out of gear to see if I could downshift and it killed the car. I rolled my car into my buddies back yard and popped the hood. I ended up going through all the fuses and scanning it for engine codes. All the fuses were fine, and it wasn't pulling any engine codes. I waited a few hours and came back to start it. Once it started I drove it home and let it sit (I occasionally took it out in the neighborhood).

Before I tried to start it and it wouldn't start. It would turn over but die right when i released the key from turning it on. It wouldn't even let me give it gas, the car would just stay on for about half a second and then die.

I had driven it around the neighborhood prior to this morning so I thought it could make the 15 minute drive to work, where I could have one of the mechanics where I work diagnose it. On my way to work the same thing happened. RPMS got stuck, car slowed down, giving it gas wasn't doing anything. I was coasting down a hill and pulled to the side before it died and called a tow truck. It's getting looked at right now by a mechanic, but I would like to know if anyone else has had this type of problem? It still doesn't have a check engine light on.

Some information about the car.
It's an 06 SE, around 30lbs of boost @ a little over 400whp
1250cc injectors
gsc s2 cams
o2 dump
stock turbo
e85 stock ecu
about full bolt-on

Thanks for reading this! Absolutely any input will be greatly appreciated. I might be forgetting some things to add, but if I remember I'll edit it in.

 

Do you have a way to check/monitor your fuel pressure?

 

No, I don't. The car is also on speed density. Forgot to mention that.

 

I suspect it has to do with fueling. You may want to get a Fuel Pressure gauge and start from there.

 

+1 for checking fuel pressure but could be many things.

 

take it to english racing. if it won't run, they can pick it up, or if you have aaa, have it flatbedded to english.

 

+123 for checking fuel pressure. Also, do you have an AFR gauge? This would help to see if it leaning out when it happens. It may indicate you have a regulator or pump problem.

 

The mechanic looking at it said it was the ecu. Something about how the injectors aren't getting through because the main ecu might be bad. I'm now looking for a new ecu. For e85 should I go aftermarket?

 

Never heard of that. I'd be surprised if that was the cause.

 

Yeah, I'm just not too sure. I know he doesn't work on these types of cars, I just needed to get it somewhere and have some mechanic check it out. I'm going to tow it back to my dealership and put in a new fuel pump. If that doesn't work it would be the injectors, right? I sent an email to English Racing to see if they can look at it this week if I were to tow it to them. The way the mechanic was explaining it to me made it sound like it could have just been a bad tune.

 

When was it tuned last? If you've been driving it with no problems up until now, I would doubt it has anything to do with your tune. Check fuel, air, and spark. Have to have all three to run. Most likely some sort of electrical issue either on its own is causing this problem, or is directly affecting a mechanical components ability to do its job. Just my thoughts. But def check for fuel pressure and delivery.

 

Sorry to bring this thread back from the dead, but did you ever find out the cause of this problem? I'm having the exact same issue and I can't seem to fix it.. Thanks in advance

 

MAP sensor might be the problem. I've had a similar issue and it ended up being a bad Omni 4bar.

 

I had Omni send me a brand new map sensor and the car won't start now. I don't know if it's just from my car sitting for so long (3 weeks now trying to figure this out) or if maybe the new one they sent me is bad too.

 

I think the devil might be in the fuel delivery!