308 QV, first problem since purchased in 2004 | FerrariChat
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308 QV, first problem since purchased in 2004

Discussion in '308/328' started by 308gtsdriver, Jul 2, 2009.

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  1. 308gtsdriver

    308gtsdriver Rookie

    Sep 25, 2007
    29
    Phoenix AZ
    Full Name:
    Ted Vavaroutso
    #1 308gtsdriver, Jul 2, 2009
    Last edited: Jul 2, 2009
    Hi guys, I finally encountered my first problem with my '85 QV. Drove it last week for abour 100 miles, came back home, back in the garage. 5 days later I fired it up, no problem, trying reving it up , and there it was. It would not rev up smoothly like before, reved it up to 3K , let go the accelerator and it died. Fired it up again, same situation, it idles smouthly but under load, it revs up rough .I changed the fuel filter, it was due, drained the fuel tanks, got fresh fuel, no difference. Back to square one. I would appreciate any advice I can get on this one. Thanks guys, regards, Ted.
     
  2. fgcfire8

    fgcfire8 Formula Junior

    Jan 19, 2008
    459
    Montpelier Va
    Full Name:
    Frank Castelvecchi
    #2 fgcfire8, Jul 2, 2009
    How long since plugs and cleaning distributer and rotor?
     
  3. 308gtsdriver

    308gtsdriver Rookie

    Sep 25, 2007
    29
    Phoenix AZ
    Full Name:
    Ted Vavaroutso
    #3 308gtsdriver, Jul 2, 2009
    I've owned the car for 5 years, ran like a dream...except for fluids, a couple other things, no major repairs. Belts are due next month..This was so sudden, like a heart attack. I'm a cardiovascular intensive care unit Registered Nurse, and most of my patients would say: "I was just sitting there and the next thing you know, I was on the floor with a lot of pain in my chest.. This is how I feel about my situation. How often should I change spark plugs? Thanks for your response, regards, Ted.
     
  4. Kravchak

    Kravchak Formula Junior

    Oct 17, 2005
    850
    Northeast
    Full Name:
    Ken
    #4 Kravchak, Jul 2, 2009
    Get the service that is NEEDED, and it will run like a clock again... no problem
     
  5. barcheta

    barcheta F1 Rookie

    Nov 15, 2003
    3,738
    Maryland
    Full Name:
    Jim
    #5 barcheta, Jul 2, 2009
    sounds like another case of bad crank sensors. There are three... one for each cylinder bank and one for the tach. they are down by the flywheel. Try checking the impedence on those an replace if needed. My car had similar symptoms and it turned out to be that.
     
  6. climb

    climb F1 Rookie

    Sep 19, 2006
    4,866
    Atlantic Beach Fl
    Full Name:
    Stuart K. Hicks
    #6 climb, Jul 2, 2009
    Many more times than not things like this turn out to be spark related and not fuel in my experiences. I'm chasing down a misfire myself. It's easy enough to change the plugs and new extenders are only $129 for all eight. The accel 4040r spark plug wires are an easy install for $32 at pep boys. Unplug the digiplex boxes and clean the contacts too.

    Like it's been said the crank sensors cause lots of these type of problems too.
     
  7. James in Denver

    James in Denver Formula 3

    May 23, 2006
    2,136
    Centennial Colorado
    Full Name:
    James in Denver
    #7 James in Denver, Jul 2, 2009
    As someone else mentioned, it could be bad crank sensors.

    It also could be one bank not firing. The F V-8 will run with only one bank, but low on power and will not rev up. This could be a coil going out.

    Also could be one or more extenders going and arching (therefore not firing). (this was my problem with similar symptoms that you are describing and cured by replacing all wires and extenders).

    Could also be water in a plug hole causing a misfire/ground, did you happen to just have washed the car?

    Just guessing to try to help you trouble shoot.

    James in Denver
     
  8. 308gtsdriver

    308gtsdriver Rookie

    Sep 25, 2007
    29
    Phoenix AZ
    Full Name:
    Ted Vavaroutso
    #8 308gtsdriver, Jul 3, 2009
    Hi James, I did wash the car recently but I drove the car afterwards without any problems. Tomorrow I'll start checking all the different possibilities you guys have mentioned, starting with new wires and plugs.I'll keep you all posted.Thanks guys.
     
  9. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,586
    San Carlos, CA
    Full Name:
    Mitchell Le
    #9 yelcab, Jul 3, 2009
    Hm, car wash, bad running. Someone here tried to deny this once, and finally had to accept that it is related.

    Check out all the connectors for water.
     
  10. 308gtsdriver

    308gtsdriver Rookie

    Sep 25, 2007
    29
    Phoenix AZ
    Full Name:
    Ted Vavaroutso
    #10 308gtsdriver, Jul 3, 2009
    Tomorrow is going to be a busy day for me. Can't wait. Thanks again guys.
     
  11. climb

    climb F1 Rookie

    Sep 19, 2006
    4,866
    Atlantic Beach Fl
    Full Name:
    Stuart K. Hicks
    #11 climb, Jul 3, 2009
    Someone recently reported finding water in the digiplex connections and that that was the cause of their misfire.
     

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