To funny I was sitting here thinking of a work around between the O2's and volts, I guess I will stay away from the "Buy It Now button" for now. I did not log O2's last time but will this time when parts arrive. Do you know off hand what Adaption Range RKAT and FRA #'s express? These are numbers for some elses stock engine so what would be considered a rich condition regarding O2's?

Idle Speed - 680rpm
Load Signal - 1.3ms
Mass Air Flow - 19 kg/hr
Hot film mass air flow meter - 1.31 volts
Engine Temperature - 90°C
Throttle Plate Angle - 0°
Ignition Timing - 5.3° crank
Specific Air Mass - 17.0 kg/hr
Specific Air Adaption - 3.0kg/hr
Injection Time - 2.8ms
Oil Temperature - 90°C
IATS - 27°C
ECTS - 92.3°C
Oxygen Sensing Cyls 1-3 - 0.9 to 1.0 (varying)
Oxygen Sensing Cyls 4-6 - 1.0 to 1.15 (varying)
Range cylinder 1-3 (FRA) - 1.02
Range cylinder 4-6 (FRA2) - 1.01
Range cylinder 1-3 (TRA) - -0.36
Range cylinder 4-6 (TRA2) - -0.33
O2 sensor ahead of cat conv (1-3) - 0.1 to 0.7 volts (varying)
O2 sensor ahead of cat conv (4-6) - 0.1 to 0.7 volts (varying)
Camshaft Position deviation - -3.0° crank
Rough running threshold - 8.4
Rough running - 0.0
Segment (A) - 1.0
Segment (This should be Segment B
Learning progress, sensor wheel adaption - 0.000
Misfire detection - 0.000
Engine compartment temperature - 60.0°C
Oxygen sensor heat resistance ahead of cat conv - 3.2ohms

 

Ok....no baffles around the maf, just a screen before it to protect it.... looks like 1999 is right again (I hate when that happens)... there is a resistor spliced up between the white/blue wire from the maf wiring harness.

to answer your question...

 

Vanda' bar.. and I'm sure 1999 did not start out knowing allot, but was earned like the rest of us. Thanks again

 

Mother. On a narrow band O2 sensor, voltage on the after cat sensor of .90 is 12.5:1 fuel ratio. So, when you are tuning in open loop, you are more than safe keeping the sensor putting out .88 volt or higher. This is on a fully warmed engine.

 

Actually, I was born with absolute and complete knowledge and have spent my life trying to forget to help lighten my load.

 

Thanks I'll keep that in mind.

 

I would have thought you came out of the womb with a tatoo of porsche on your forehead and your first words where "What does that do"?

 

Finally parts arrived and time to go to play.

 

Well the car runs 100% better and does idle, no hunting or smoke with new intake and the $1.00 resistor, but still seems alittle rough with no misfires indicated. I cannot remember, but I think I had a error message with one of the O2's and will re check later just wanted to tell eveyone that helped thank you and GOOD JOB! The new info was sent to FVD and we will see what they think. 1999 not sure which O2 voltages after cats since there only seemed to be the one for right and left banks (Conv) but seemed one bank running very lean hope this is what you where talking about, if I missed something let me know I can get more data. Attached in 2 parts are the new numbers that will lend some indication of what the engine is doing pluse new crappy video and Excel spead sheet at:

http://www.webbspot.com/Porsche/fvdvideo.html

That's all for now I'm am going to look at some data.

 

I also had 2 error/fault codes:

1. P0134 code 10 - O2 sensor ahead of Cat conv.
2. PO1115 code 13 -Heating power O2 s ahead of cat bank 1

Anyone venture a guess.

 

Mother... looking good!

 

Thanks Redridge, making some little changes and seeing progress is nice. I'm going to check and clean the left bank O2 connector, clear codes and rerun again and see it the errors clear up.

 

Ok, an update the new (bank 1 O2 before cat) sensor has be installed and car runs better and Error Code 1115 I had previously has cleared. It seems rich at idle but leaner once warm and the numbers (O2 V) seem better, but lean after cats? Note: On image first votages are of bank 1. Feeling more I confindent drove it down street at idle but have a "CLICKING" noise that seems to be comming from wheels on both sides, I had redone the brakes with new pads so I still am not ready for Dyno I made a video of the sound tell me what you think:

http://www.webbspot.com/Porsche/video/clicking.3gp

Or go hear also for both spread sheet and video.

http://www.webbspot.com/Porsche/fvdvideo.html

 

I just posted what you need to do over on Rennlist. You are not running lean. You need to plot some WOT after cat sensor readings. MAF voltage still too high.

 

Update:

Long day did some data testing for 1/2 around town and freeway from idle to WOT. Well after just finishing 5.5 hrs for replacing my sc/main drive belt which I schredded at idle, but luckily at my house (I think I found the problem a sharp edge on bracket wut will see) I also found out a couple of things one is you run out of freeway real fast in a 3-4 gear WOT run and that you hear all kind of strange smells and a buzzing noise comming from the eng compartment and it went away hummm. Anyway here is some data, but am concerned that I lost MAF voltage at WOT run or should I say at 6,200 rpm my voltage when from 4.6 to .99 there after and never changed ( Note line 492 in data sheet under Maf voltage column CG) regardless of rpm change?

Here is link to data sheet:

http://www.webbspot.com/Porsche/fvdvideo.html

click 1/2 hour data run.