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Strange issue v2.

 
Old 08-07-2010, 02:37 PM
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Default Strange issue v2.

So today I was going to do some work on my car and it got worse.

Basically last weekend I changed my CAS oring to get rid of the oil leak coming from it. When i did this i didnt have my laptop with me to sync timing but it ran just as it had before so i limped it home and parked it for the week.

Fast forward to now...
Today i go out with the laptop to sync timing and the car starts up REALLY weird... like it would barely idle and lope from 1000-2000. i check the timing and when i have it locked to 10 degrees it isnt even close to the timing marker at all! it seems like it is retarded a significant amount.

this is also the first time i have plugged the laptop in since getting a professional dyno tune.


If i sync timing on the crank to the ECU the car doesnt run any better, but it also doesnt run any worse.

i would load a log of the car idle and running but i cant load it here.


Any ideas?

My tune is still in there from the professional, and the afr's are the same.

Matt
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Old 08-07-2010, 03:42 PM
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flip your cas to the extremes and try running the car, see if you notice any improvement/degradation at idle.
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Old 08-07-2010, 04:08 PM
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Originally Posted by fooger03 View Post
flip your cas to the extremes and try running the car, see if you notice any improvement/degradation at idle.
+1.

Why can't you upload your calibration?
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Old 08-07-2010, 06:44 PM
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i sync'd timing and the car is fast again... same as before anyways.

so i was trying to determine my idle issues... either:
a) the tune for IACV is fucked and somehow changed when i went to plug in my tuning computer, or;
b) the IACV is clogged/damaged

when i unplug the IACV right now, there is no noticable difference in idle... both times sounds like i have some lope from cams or something...

i did hear a little backfire into the intake at one point... i cant rember if it was before or after this issue though. happened when cranking so i am going to say after this became an issue.

rafa, i tried uploading a cal and a log once before but it didnt work... i will try it in a second when my tuning computer has booted up.
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Old 08-07-2010, 06:55 PM
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Originally Posted by shlammed View Post
i sync'd timing and the car is fast again... same as before anyways.

so i was trying to determine my idle issues... either:
a) the tune for IACV is fucked and somehow changed when i went to plug in my tuning computer, or;
b) the IACV is clogged/damaged

when i unplug the IACV right now, there is no noticable difference in idle... both times sounds like i have some lope from cams or something...

i did hear a little backfire into the intake at one point... i cant rember if it was before or after this issue though. happened when cranking so i am going to say after this became an issue.

rafa, i tried uploading a cal and a log once before but it didnt work... i will try it in a second when my tuning computer has booted up.
Matt; glad to see the car is back to running normal again.

Idle is a bitch!

Send me a pm and I'll send you my email address. Maybe I can help you out. I'd like to see your idle settings. Start by checking the valve's frequency settings.
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Old 08-07-2010, 07:04 PM
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here is my tune and my log...(let me know if it worked)

before i sync'd timing....
timing was retarded ~6 degrees (i read that coarse timing adjustment is 4 degrees and fine is 1 degree)

so definately check timing when you change the CAS oring ahah...

you can see that the car was struggling in the log, the turbo would bareeeely spool.

i will get a comparison log soon.

idle issues still remain the same.
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