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dcdrechsel

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Everything posted by dcdrechsel

  1. Since engine is out you might want to send injectors out for cleaning and testing .Eliminates one more variable Dave
  2. 1999 C2 -DME 5.2 .Has anyone done a test( with the Durametric Software) of the camshaft deviation to verify that the actuators are kicking in ?I am flatlined at 3 degrees .The drive link function is working and no cel .I have tried all reasonable rpm ranges and the reading doesn't change .It's either the software or I have a problem . Easy to eliminate the software if someone else has sucessfully done the test with the 5.2 DME.Thank you Dave
  3. Mike -I think the actual value readings would be more informative and can be compared to the set values .For example -the 1999 set value at idle is 0 + or - 6 degrees .That changes as you increase engine rpm .I don't remember to what .The drive link is more of a continuity test .The durametric software is supposed to be able do a concurrent operation -drive link and actual value reading -which in my case would have been helpful. But there is a bug and will be fixed in a future release . Dave
  4. Do a search on rennlist- timing chain replacement by big Ev -one of the responses is from Jake indicating he is having them made .It's his second post .His first post is about splitting cases -keep going ..Another source is Parts Geek .I am sure there are a few more . Dave
  5. Cloudsurfer-DME values would be great .I don't think you can do that with the Durametric .By chance do you know how to test the hall sensor?Here is why:with ignition on ,engine off Durametric reports 12 degree deviation .I would think it would be 0 . As far as chains -I believe Jake has chains with a master link available .Connect old to new and weave thru engine . Thanks Dave
  6. RFM -thank you for the response .Bank 2 produces same lumpy idle -have no clue what devation is since dme doesn't report it .I think you are right on replacing chains and guides as well .Still would like to understand why deviation is flatlined .or not moving . Dave
  7. No driveability issues.Why did I check it ?About to do IMS bearing and wanted a baseline .Have I checked the timing ? Not yet .116,000 miles -I am sure chains are stretched .Obvioiusly something isn't right -the cam deviation is flatlined at 12 degrees yet when I exercise the drive link the motor changes significantly- lumpy idle. It could be as simple as timing is off and at max therefore dme won't advance cams .The question is the dme programmed to do that?The reason It would be nice to get a handle on this is that if I have to pull the actuator I will drop the motor -if not just the trans for the IMS bearing . Dave
  8. Using the Durametric Software -Bank1 deviation is flatlined at 12 degrees .There is no change from idle thru 6000 rpm. The Durametric folks have had reports of a broken actuator spring causing this -stuck in advanced postioin . In my case using the bank 1 drive link the idle changes dramatically-which seems to indicate the actuator isn't stuck. I would like to try same test on bank 2 but DME/durametric doesn't report that side . Cel is not tripping-no codes . I guess there are two questions -has anyone else experienced this ?If the timing is off -is the DME smart enough to not advance beyond 12 degrees ? It would be nice to get a handle on this before taking it apart . Any insight or suggestions would be most appreciated . Dave
  9. Question for 1999 Porsche 911.How did you arrive at the conclusion that oil pressure must be 4 bar at 3,000 rpm when the manufacturer is saying 3.5 at 5,000 is ok ? Dave
  10. Hi Dave, I had a guy here in Sarasota make them for me. I think the dealer wanted $90 a piece, for what ends up being a $0.25 part. I think I was quoted $600 for the cylinder, LOL. I understand that as Porsche owners, we are expected to pay a premium for parts, but that is ridiculous. My guy now has the tooling for the seals, so he should be able to crank out a bunch more. Let me talk to him and get back with you on his pricing. By the way, when I say that I managed to rebuild the cylinders, I meant that my much more capable friend was able to do it. The problem with the cylinder is that the mount is part of the arm, so he had to saw it off to open the cylinder. He explained how he fused it back together but I can't remember the details so I'll have to ask him again. I trust the guy, he designs hydraulic systems for a living so this was completely up his alley. Nothing is ever simple .Looks like the sawing apart would be easy .Not so sure about the fusing part .But if done once -not impossible .Any further info greatly appreciated . Dave
  11. Steve-where did you get the seals for the cylinders ?I have one leaking and need to fix it . Thanks Dave
  12. That is the valve on top of cylinder 5 .Can someone verify that it should hold at least 15 inches of Vacum in the off position . Mine drops like a rock using a mighty vac . I think I know the answer but would like to be sure .Thank you-Dave
  13. P1123 is likely a bad MAF or air purge valve or air leak problem. Please do a search P1123 has been covered here many many many times. Loren -thank you for the reply .I have done a search and read /tried all the obvious things .What has me stumped is that it is really intermittent .For example the car will go 200 miles and set off P 1123 and at other times 75 miles or less .Right now I am north of 225 miles and the tra value is -.17 -I believe it trips at +/- .32 .My logic was a flaky coil could possibly set it off.Maybe it's a dumb question but it kinda seemed logical . Dave A bad coil pack would cause a fault on that one specific cylinder (i.e P0304 - misfire cylinder 4). Have you tried a new MAF or cleaning the one you have? Have you looked for air leaks? Any other fault codes? Cleaned MAF twice-couldn't find any air leaks-tried oil cap off test from shop manual and was ok .No other fault codes . What is your air mass flow reading at idle and no-load 2500RPM? 15.50 and 47.50 Well, it would appear your MAF is functioning within limits. Unless you have a charcoal canister purge valve problem you have an air leak. I will circle back on the purge valve and air leaks ..Thanks for the help
  14. P1123 is likely a bad MAF or air purge valve or air leak problem. Please do a search P1123 has been covered here many many many times. Loren -thank you for the reply .I have done a search and read /tried all the obvious things .What has me stumped is that it is really intermittent .For example the car will go 200 miles and set off P 1123 and at other times 75 miles or less .Right now I am north of 225 miles and the tra value is -.17 -I believe it trips at +/- .32 .My logic was a flaky coil could possibly set it off.Maybe it's a dumb question but it kinda seemed logical . Dave A bad coil pack would cause a fault on that one specific cylinder (i.e P0304 - misfire cylinder 4). Have you tried a new MAF or cleaning the one you have? Have you looked for air leaks? Any other fault codes? Cleaned MAF twice-couldn't find any air leaks-tried oil cap off test from shop manual and was ok .No other fault codes . What is your air mass flow reading at idle and no-load 2500RPM? 15.50 and 47.50
  15. P1123 is likely a bad MAF or air purge valve or air leak problem. Please do a search P1123 has been covered here many many many times. Loren -thank you for the reply .I have done a search and read /tried all the obvious things .What has me stumped is that it is really intermittent .For example the car will go 200 miles and set off P 1123 and at other times 75 miles or less .Right now I am north of 225 miles and the tra value is -.17 -I believe it trips at +/- .32 .My logic was a flaky coil could possibly set it off.Maybe it's a dumb question but it kinda seemed logical . Dave A bad coil pack would cause a fault on that one specific cylinder (i.e P0304 - misfire cylinder 4). Have you tried a new MAF or cleaning the one you have? Have you looked for air leaks? Any other fault codes? Cleaned MAF twice-couldn't find any air leaks-tried oil cap off test from shop manual and was ok .No other fault codes .
  16. P1123 is likely a bad MAF or air purge valve or air leak problem. Please do a search P1123 has been covered here many many many times. Loren -thank you for the reply .I have done a search and read /tried all the obvious things .What has me stumped is that it is really intermittent .For example the car will go 200 miles and set off P 1123 and at other times 75 miles or less .Right now I am north of 225 miles and the tra value is -.17 -I believe it trips at +/- .32 .My logic was a flaky coil could possibly set it off.Maybe it's a dumb question but it kinda seemed logical . Dave
  17. Jake -have you seen a flaky coil trip P1123 ? I am chasing an intermittent on a 99. Dave
  18. and....it appears that everything is in spec except -Spec air mass at 13 should be 15.5 =/- .25 ;Spec air adaption is -2 should be 1.5 +/- .05 ;segment A 1.0001 and should be .01 . I am new to this forum and have been really impressed by the amount of knowledge and willingness to help.Hope someone can point me in a direction Oh- the car is 99 Boxster with headers Thanks Dave
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