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dr bob dr bob is offline

Chronic Tool Dropper
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Showing Visitor Messages 1 to 10 of 11
  1. Carl Fausett
    12-14-2016 04:13 PM
    Nice post on Greg's alternator page about the grounding issue. Thank you for trying. I agree completely that's why they added little ground straps from coil to head on the later cars... that's just good engineering.

  2. Steve Drake
    11-28-2016 09:23 PM
    Hi Dr Bob Have got a dead car after working on it.
    Removed injectors, replaced seals and tips, checked ohms and spray patterns.
    Removed the air flow boxes (86.5 ) to clean the Throttle Body spring. Undid the 3 prong plug to the Sensor (I guess) that sits on top of the forward bell housing around torque tube connection. Just the three pins remained connected to the wire harness side.
    Ordered a new plastic housing. Thought I got them back in right. Now unsure.
    No spark now just cranks. Checked with a timing light. No life. Gas is in rails.
    Guess this 3 wire connection monitors shaft rotation? Connectors on the harness side. 9.1 v. 9.2 v, and 9.3 v. ignition on. Other side contacts are open no ohms to ground. Between # 1 and #2 about 950 ohms. Between 3 and other leads open. Not sure what it does. Anything tricky about the injector or fuel delivery that would stop the ingition.
    Any ideas? Will start checking fuses tomorrow.
    Cheers, Steve in Carlsbad
  3. 82_928
    05-19-2013 04:13 AM
    How u doing sir, I met u tonight(5-18-2013)(the lil black guy) just want to say thanks for the advice...
  4. Deantec
    06-24-2011 11:11 PM
    Dr bob
    with regards to your post today about alignment.Hope you maybe able to help.
    what years did the arms change..i am having big problems getting front driver side to aligne and it seems like the upper arm is pushing the top of the wheel out almost as if the arm is to long, now thinking could be the wrong year arm was installed in the past. (1985 us auto )
  5. georges 928S
    05-10-2011 11:39 PM
    Hi DR.BOB, iam buying an 83 auto U.S. from some one in arcadia, calif. i heard you live in L.A. the
    problem is the car wont start becouse of old gas that became a varnish. a mechanic replaced the gas tank with a used one cause the old was leaking. also put in a new fuel pump. tha car starts and dies.
    and the mechanic not familiar with these cars. my question is can you help me with problem and i will be happy to pay you. you can e-mail me at [email protected] or call me at 209-765-7653

    i would appriciate any suggestion. thank. Ed George.
  6. big928fan
    02-14-2011 08:05 PM
    Dr. Bob,

    I noticed that you are an avid 928 fan in SoCal... Would you happen to know anything about the 1981 928 for sale on ebay right now? Item number 120683440343?? The car looks awesome, but as with purchasing anything on ebay, i'm trying to get all the info before committing myself. Thanks.

  7. 88porsche928
    02-14-2010 03:21 PM
    Dr. Bob, I posted the results on the message board
  8. dr bob
    09-03-2009 12:55 PM

    That was referring to RyanP's S4 for sale, a car I had not seen but had heard of. Ryan was having trouble with smog and some other stuff, and wanted to sell the car to an out-of-Cali buyer to avoid having to get it to pass.

    Two previous Ryan cars had been in my garage for various things, and that was the reference to Kevin in the second post.
  9. jwillman
    09-01-2009 10:37 PM

    A bit confused by the strings below.

  10. dr bob
    06-15-2009 02:08 AM

    I don't know the car he has now at all. I helped him with his GT before he went to Texas a few years ago, and again with the car he sold last year when he needed a place to do motor mounts and pan gasket. I might be able to do a look-see and take some pictures for you. For a real full PPI you might want it to go to Greg Brown for a hew $hundred. I honestly have not stayed on top of Ryan's activities that much. I know he likes to work on them and trade his work for some value added when he sells. Let me know if I can help.


About Me

  • About dr bob
    Computer Controls Engineering Consultant, principal clients in the power industry. The 928 is my fifth Porsche, a habit that started over thirty years ago now. Have my own wrenches and hammer.
    Bend, Oregon
  • Signature
    '89 S4 Auto, black.

    Rennlist Member & Silent 928 Forum Netminder
    928OC Charter Member #81
    SoCal 928 Co-Founder #3
    PCA High Desert Region Member

    Free advice and shared experience, with absolutely no relationship to your real-world conditions. No warranty of any kind expressed or implied. Use at your own risk.


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  • Join Date: 10-30-2001


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