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Up-date on my P0336 code.
This has been a very frustrating season because of this issue I missed Thompson and Mid-Ohio.
This is a 3 chain 2003 2.7L engine.
I have verified the mechanical timing with the cam timing tool - The cams and crank are properly in sync.
The crank sensor is good. And a second sensor was tried and tested.
The wiring harness from sensor to DME is good
I can see engine RPM on the scan tool
per Porsche diagnostics.
The DME (ECM) is bad.
Does anyone have a DME for a 2003 manual trans Boxster I could try to test?
Or a good source for the DME to purchase used?
Remember you will need a DME/Immobilizer and Key Pill that all match to "swap".
When I was debugging my electrical issue -- I ended up buying a complete second donor car -- and frankly if you are endurance racing -- you'll get your money back in parts.
Ironically -- our endurance racer boxster -- was my craigslist test mule that helped me figure out my PCA SPB issue.
mike
Originally Posted by ChampRacerJ
Up-date on my P0336 code.
This has been a very frustrating season because of this issue I missed Thompson and Mid-Ohio.
This is a 3 chain 2003 2.7L engine.
I have verified the mechanical timing with the cam timing tool - The cams and crank are properly in sync.
The crank sensor is good. And a second sensor was tried and tested.
The wiring harness from sensor to DME is good
I can see engine RPM on the scan tool
per Porsche diagnostics.
The DME (ECM) is bad.
Does anyone have a DME for a 2003 manual trans Boxster I could try to test?
Or a good source for the DME to purchase used?
Remember you will need a DME/Immobilizer and Key Pill that all match to "swap".
When I was debugging my electrical issue -- I ended up buying a complete second donor car -- and frankly if you are endurance racing -- you'll get your money back in parts.
Ironically -- our endurance racer boxster -- was my craigslist test mule that helped me figure out my PCA SPB issue.
mike
... if you do buy a spare ECU I'd recommend sending it off to have the Immobilizer deleted. It cost me $1100 but was well worth it. The immobilizer system has lots of issues, especially if the unit gets wet = no start..
You gotta pay to play sometimes. This was one of the things where I had to pay more than play when building my enduro Boxster. Also it helped with fuel econ since I had it tuned at the same time (didn't change immobilizer delete price). The most fuel I used at VIR was 14 gallons in 1:55min with a pro driver at VIR full..
... if you do buy a spare ECU I'd recommend sending it off to have the Immobilizer deleted. It cost me $1100 but was well worth it. The immobilizer system has lots of issues, especially if the unit gets wet = no start..
You gotta pay to play sometimes. This was one of the things where I had to pay more than play when building my enduro Boxster. Also it helped with fuel econ since I had it tuned at the same time (didn't change immobilizer delete price). The most fuel I used at VIR was 14 gallons in 1:55min with a pro driver at VIR full..
Yikes; But you are right, I need to do the immobilize delete.
Can you send me you source for this?
Well, I'm at a total loss battling the p0336 code.
Many thanks to another forum's member for lending me his DME, Immobilizer and transponder (key pill). I got the car to run with this loaner DME but still have the P0336 error.
I've checked the engine mechanical timing (all 4 cams and crank positions), the crank sensor (2 of them), the wiring to the DME and now a second DME.
I get RPM output on the tach, the scan tool and oscilloscope.
But still have an error.
Last edited by ChampRacerJ; 11-04-2022 at 06:24 PM.
check the teeth on the flywheel? See if any are chipped?
The early IMS had press fit gears. There have been cases where the gear on the shafts shifts -- I don't know what the symptom of that is however.
I'd ask your question over at 986forum.com -- there's a couple really knowledgeable mechanics that follow that forum. Maybe one of them can chime in.
Mike
I have post on the 986forum as well.
But I,m looking more closely at this: Looking at the crank sensor oscilloscope trace, I'm seeing inconsistencies in the cyl #1 trigger. Hum...
I'll be checking the teeth, the sensor mounting, flywheel runout.
Last edited by ChampRacerJ; 11-06-2022 at 11:22 AM.
I have post on the 986forum as well.
But I,m looking more closely at this: Looking at the crank sensor oscilloscope trace, I'm seeing inconsistencies in the cyl #1 trigger. Hum...
I'll be checking the teeth, the sensor mounting, flywheel runout.
Hopefully you can get it figured out -- always like to add to my rolodex of knowledge.
10-19-2022, 10:51 AM
