Nick1234 Posted April 28, 2006 Report Share Posted April 28, 2006 Symptoms: Takes a while to start(cranks about 4-5 seconds) Rough idle Rough idle when comming to stop around 10-15 mph Dies easily when idling When idling at first when stopping smooth then slowly a chugging/popping/misfire which your hear very clearly through the exhuast in the middle of the car. Last week through code 44 and 45 Reset ecu today code 45 (oxygen sensor circuit, rich echaust) At wot, slight misfire/hesitation, just started today. Did it twice. Im not driving the car hard. just trying to figure out something. I changed the o2 sensor. Cleaned the iac in september ( car sat all winter) Ideas i have: Fuel pressure regulator new iac coils vaccuum issue, my gauge says about 20. Time for a new crossover, yet doesn't tell my why the computer detected the car running lean or the chugging/popping at idle. Now this started kinda out of no where about 2 weeks ago. everything appears to by fine once you start driving except for a some hesitation at first. Nick Quote Link to comment Share on other sites More sharing options...
dbtk2 Posted April 28, 2006 Report Share Posted April 28, 2006 What did you clean the IAC with? Was it giving you trouble before and thats why you cleaned it, or did you just clean it for regular maintenance? Also, what kind of 02 sensor did you put in the car, and why did you change it (regular maintenance or was it giving you problems)? Do you have the old 02 sensor to put back in and see if it gets better. With 20in. of vacuum, there shouldn't be a leak. Thats a good amount of vacuum. Considering it has stock cam and 1.6 rockers thats about what it should be. We know the crossover is bad, they all are, but that one has been repaired and isn't in too bad of shape. The car would always die at idle if it sat for a few minutes (sometimes less than that) idling, but other than that it ran great. Did you check the plugs? Are the gaps all good, and do any of them look fouled? Also, I assume you are running R42LTS's? Also, put a fuel pressure gauge on it and see what the pressure is at idle. It should be in the 40psi range at idle, and when you get into boost it should increase. You might want to check the fuel filter as well. It could possibly be clogged. I never changed it while I had the car, so it wouldn't hurt. Also, is there any type of ticking noise coming from the engine under the hood? I had some problems with the rockers coming loose when i first put them in and if there is a loose rocker or two that could definately cause this problem. Its sounding to me like it might only be running on 5 cyls. That would explain the hard starting, rough idling and stalling, and misfire sound. Hope that helps. Shawn Quote Link to comment Share on other sites More sharing options...
Nick1234 Posted April 28, 2006 Author Report Share Posted April 28, 2006 Well i am running the r42lts. Those are new, along with new wires. See the problem got worse than it used to be. Like it still dies when it idles, but there is now something else. i will check the fuel system, but it almost seems timing related. I can't tell. I figure the fuel pressure regulator would be related to the taking a long time to start and maybe some of my other problems. Although part of me thinks it is timing related due to how it starts chugging/popping. Im going to try and get a video of it on Monday. Quote Link to comment Share on other sites More sharing options...
dbtk2 Posted April 28, 2006 Report Share Posted April 28, 2006 Well i am running the r42lts. Those are new, along with new wires. See the problem got worse than it used to be. Like it still dies when it idles, but there is now something else. i will check the fuel system, but it almost seems timing related. I can't tell. I figure the fuel pressure regulator would be related to the taking a long time to start and maybe some of my other problems. Although part of me thinks it is timing related due to how it starts chugging/popping. Im going to try and get a video of it on Monday. Like I said in the last post, I also agree that it seems timing related or something like that. I'm thinking you probably have a bad coil or bad wire and it isn't quite running on all the cylinders. Quote Link to comment Share on other sites More sharing options...
Nick1234 Posted April 28, 2006 Author Report Share Posted April 28, 2006 agreed. Quote Link to comment Share on other sites More sharing options...
LukeZ34 Posted April 28, 2006 Report Share Posted April 28, 2006 Have you checked your injectors? Quote Link to comment Share on other sites More sharing options...
TGPilot Posted April 28, 2006 Report Share Posted April 28, 2006 Stalling, chugging at idle, 02 Condition code? Either the repaired cross-over has failed or you have a leak somewhere at the manifold flanges or the turbo flange. Might be the the injectors also as Luke said. Time for a new crossover, yet doesn't tell my why the computer detected the car running lean or the chugging/popping at idle. Now this started kinda out of no where about 2 weeks ago. everything appears to by fine once you start driving except for a some hesitation at first. Nick All your symptoms sound like a failed cross-over and a fouled 02 sensor. The reason you get a lean condition (even though you are running severely rich) is the fact that you are sucking in fresh air before your 02 sensor. The 02 sees the extreme lean condition and severely fattens/richens the mixture. When the un-needed extra fuel is dumped in the cylinder it bogs your engine fouls your plugs. The 02 will see the lean condition from the fresh air even though you are carbon coating your 02 sensor with near to raw gas and after a short time you foul the 02 sensor. -Kenny Quote Link to comment Share on other sites More sharing options...
Nick1234 Posted April 28, 2006 Author Report Share Posted April 28, 2006 Kenny how much for a new crossover? Nick Quote Link to comment Share on other sites More sharing options...
TGPilot Posted April 28, 2006 Report Share Posted April 28, 2006 PM sent... Quote Link to comment Share on other sites More sharing options...
Nick1234 Posted May 3, 2006 Author Report Share Posted May 3, 2006 Okay. Something new i noticed. At idle this chugging is going on. Now if you let it sit, it actually stays running once in a while, and all of the sudden it stops chugging, and the ses light comes on, and it runs fine. Now it is kinda inconsistant that it doesn't die all the time or i will be turning in a parking lot and it will die too. Now at wot, i have noticed a fluctuation in boost once in a while. It spools to eight, drops to 5 psi, then up to eight once again. Also 2nd gear. 3/4 throttle almost seems like the turbo is "stuttering" I think my first step will be the crossover, but seeing if they symptoms could be something else as well. Shawn, do you have any idea why it is only running at 8psi. THink the computer is pulling boost? There are so many things going on that im not sure where to start. Quote Link to comment Share on other sites More sharing options...
Garrett Powered Posted May 3, 2006 Report Share Posted May 3, 2006 vacuum and grounds. maybe clean the TB. Quote Link to comment Share on other sites More sharing options...
TGPilot Posted May 3, 2006 Report Share Posted May 3, 2006 Are you getting an 02 sensor fail when the SES turns on? Most likely you are or it is seeing too much error in the A/F and it is throwing the ECM into OPEN loop and the lower idle fuel tables are taking over. When it is in OPEN loop it is not adjusting for fuel because it is no longer looking at the 02 sensor. Do you have anyone near you with a datalogger? It would help severely and also tell us if you really need a cross-over or if you have something else going on. The turbo will not stutter...the engine will stutter and send those exhaust pulses down the pipe to the turbo. We really need to see what is going on with your engine...ANYONE near him with a logger?? Quote Link to comment Share on other sites More sharing options...
firefighter_0029 Posted May 3, 2006 Report Share Posted May 3, 2006 Cats Plugged? Or the Crank Sensor. Quote Link to comment Share on other sites More sharing options...
TGPilot Posted May 3, 2006 Report Share Posted May 3, 2006 So in this thread he is to replace every sensor, ground straps, fuel injectors, fuel pump, cat converter, cross-over, ECM, Ignition module, all coils, plugs and wires, upgrade the chip, and did anyone say anything about swapping to a 5-speed??? You are going to have to look closer at what is happening. Let me know what the SES code is when it levels and stays running. TRY TRY TRY to get to someone with a logger, record it or call me on the phone when you see what is happening and I can walk you through it. Quote Link to comment Share on other sites More sharing options...
Nick1234 Posted May 3, 2006 Author Report Share Posted May 3, 2006 my friend does a lot of data logging on his acura and our his friends talan. We would need a program designed for these cars to do so correct. When the ses light comes on it is giving code 45. Quote Link to comment Share on other sites More sharing options...
TGPilot Posted May 3, 2006 Report Share Posted May 3, 2006 PM Sent... Quote Link to comment Share on other sites More sharing options...
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