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About Chris1837

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  • Porsche Club
  • Present cars
    74' 914
  1. I backed away from the job as even after I showed him it was a matter of a fuel/air problem (with the loading up/starving symtoms) he insisted it was ignition. It's been my experiance that when a control module goes bad; it just doesn't work. His was working fine up until the engine loaded so much that the engine just shut down the spark. Truth is, IMHO, that it is like most drivability issues and a combination of several problems resulting in an issue. The MAF was in very bad shape with corrosion, his airbox wasn't fitted very well and of course the restrictive exhaust. I don't beli
  2. The Crank sensor was replaced (with a Gennie Porsche Part) because he was guessing at the problem before I ever got involved. The air gap is good on it and on the Hall switch also. No TPS on the manual shift. Tiptronic only. The MAF I wasn't going to attempt to repair as I haven't had very good luck and the PCB looked too far gone. He cleaned it well and only repositioned the sweeping contacts back about a 1/32 so it travels on a fresh track now. He did not take the spring off but I have on other meters of the same type in the past to adjust fuel curves and had no problem getting it
  3. Dang, 90 views and only a couple of suggestions? I do bathe regularly so it can't be that I smell bad. Did I cover everything and there's no more to be look at or are we waiting until after Saturday to see if I find something then?
  4. I really don't want to believe the DMF is the cause of this issue but, the more I think on it, the more a distinct possiblity it is.
  5. I did try the O2 sensor unhooked and no joy.
  6. Hall effect switch or sensor is under the shaft driven distributor half. The crank sensor he recently replaced. The Hall was my first suspect as it seemed an electrical shutdown but, after keeping it running by holding it just off idle I could feel/hear the engine load up to almost stalling and then it would go back to normal idle or whatever rpm I was holding the throttle open to... ..I felt it was more a fuel/air issue but at this point, I'm at a loss.
  7. Hi, my name is Chris and I'm trying to solve an issue with a friend's car. It's a 1990 911 Carrera4 964 3.6 upped to 3.9L, Motronic DME, standard shift 5 speed. Fairly recent rebuild with maybe 5000 miles on it. I've spent about 12 hours so far testing and trying to sort out and issue of idling smoothly and the engine suddenly dying. DME Inspected Repaired as well as a spare that is in working order tried. Wires all test out as good and no obvious damage to be seen. Intake rubbers and vacuum lines all intact and clear. Hall effect switch is in good order. O2 sensor checked and
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