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airtite
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« on: May 19, 2014, 05:31:36 AM »
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Hi
OK car is back to stock while charger was being rebuilt, car has been running smoothly since the motor rebuild, saturday I decided to give the car some tlc and gave it a good wash and decided to check faults, it was moaning about the bank2 lambda probe. So I unplugged the connectors sprayed some contact cleaner in the plugs and blew them out and reconnected. took the car for a drive afterwards and now the car is missing quite badly and has started logging random miss fires to cylinders all on that bank and the plugs on that bank are now all black with soot from over fueling and the car is running terribly.
The fault is about B2 S2 which is post cat and I was under the understanding that post cat lambda wont affect fueling etc? Next question surely just unplugging cleaning at reconnecting the plug wouldnt have caused this or is it just a coincidence that it happened straight afterwards.
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 - Upper Limit Exceeded
16692 - Cylinder 8 Misfire Detected
P0308 - 001 - Upper Limit Exceeded
16542 - Oxygen (Lambda) Sensor B2 S2: Signal too High
P0158 - 001 - Upper Limit Exceeded
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ddillenger
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« Reply #1 on: May 19, 2014, 07:48:58 AM »
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Hi
Problems
CLRSHK disables post cat lambda correction. |
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airtite
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« Reply #2 on: May 19, 2014, 08:03:18 AM »
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CLRSHK disables post cat lambda correction.
Thanks for that Daz any chance you can give me the address in your v8 file? also does the diagnostics seem correct? |
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ddillenger
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« Reply #3 on: May 19, 2014, 08:33:19 AM »
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Thanks for that Daz any chance you can give me the address in your v8 file? also does the diagnostics seem correct?
Give me your software number and I will look. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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airtite
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« Reply #4 on: May 19, 2014, 08:35:20 AM »
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I emailed you a copy of my ols when you were looking for something in your file my file is for v8 s4 8E0910560D
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airtite
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« Reply #5 on: May 19, 2014, 08:43:52 AM »
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somewhere around 11A0A?
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airtite
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« Reply #6 on: May 19, 2014, 10:55:20 AM »
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or 11B4C
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airtite
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« Reply #7 on: May 20, 2014, 12:49:59 AM »
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Thanks to Daz clrshk at 1A236 in my 8E0910560D file
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airtite
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« Reply #8 on: May 20, 2014, 02:28:56 AM »
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set clrshk to 17 and I am still having rough running and the following error logged
16542 - Oxygen (Lambda) Sensor B2 S2: Signal too High
P0158 - 001 - Upper Limit Exceeded
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airtite
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« Reply #9 on: May 20, 2014, 06:47:11 AM »
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ok followed the s4wiki to remove rear o2 sensors and the lambda error is gone but the car is still running rough and I am still getting the misfires on all cylinders on that bank, maybe plugs now need to be changed after running so rich?
logs attached.
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airtite
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« Reply #10 on: May 20, 2014, 07:04:55 AM »
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looking at the logs closely,
effinjectionontime2 has the injectors on even though the requested AFR is far below what currentafr is, also looking at a graph of effinjectionontime/2 they seem opposite, ie where bank2 is adding fuel bank1 is removing fuel..... WTH!
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airtite
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« Reply #11 on: May 20, 2014, 08:12:20 AM »
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anybody think it could be the FPR?
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airtite
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« Reply #12 on: May 20, 2014, 09:09:30 AM »
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anybody think it could be the FPR?
checked the FPR visibly all looks good, pulled the return fuel line off of the injector rail and started the car fuel did come out the return pipe, not sure if its meant to do that at start? Cant hear any vacuum leaks and revs dont seem fluctuate at idle. checked all intake bolts are tight. I am stumped! |
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airtite
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« Reply #13 on: May 20, 2014, 10:51:12 AM »
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fixed  So it was either the FPR or a vacuum leak on the pipe that goes to the vacuum reservoirs in the fender, I pushed that connector together to make sure it was tight while checking the FPR. either of those 2 or the issue fixed itself! |
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ddillenger
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« Reply #14 on: May 20, 2014, 12:27:41 PM »
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Cool deal!
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
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