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no start condition for 850 850

posted by  someone claiming to be markoman on  Fri Apr 14 17:30 CST 2006 [RELATED]

My 850 turns over, seems to catch a bit, but will not start. Full tune up recently, and car was running fine. I was getting an engine code for MAF, and at times the car would stall, but I would just unplug and re-plug the electrical plug into the sensor and it would then run fine - could the sensor finally be dead? The car has 220K miles on it, and the MAF was replaced maybe 3-4yrs ago. I have let the car sit a couple days but still no start.

I checked and the plugs are getting spark..what else could it be? Can the cam position sensor also causer this? Wouldn't I get an engine code if it was bad? No codes are present in ignition or fuel modules...

Would appreciate any help...I need to get this thing started.








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    no start condition for 850 850

    posted by  KlausC on  Sun Apr 16 05:07 CST 2006
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    Mark,
    Have you gotten it started yet? When you crank the starter, have you tried 1/2 throttle for 30 seconds? You mentioned replacing the MAF with a spare, is this a known good one? Usually if the cam sensor dies, it triggers a code; same is true with a MAF.
    Wire brush all 5 plugs, check the rotor and cap for scoring and dirt, make sure all plug wires are secure to the plugs.
    I am at a loss. The no codes is strange.

    Klaus
    --
    (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








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      no start condition for 850 850

      posted by  someone claiming to be markoman on  Sun Apr 16 14:50 CST 2006 [RELATED]

      no, not yet - not too much time to play with it today. I have not tried the 1/2 throttle, but will tomorrow

      It did show a MAF code, and I replaced with a new unit...I cleared the code, and it has not reappeared. I will have a look and check electrical connections again incl. dist/rotor

      I did spray some quick start fluid into the throttle body intake, and it sounded like it fired a bit but it never really caught...which leaves me to beleive the ignition is working...is this a correct assumption?
      If I cannot find any electric/dist/rotor fault, I will order a cam sensor tomorrow....

      mark







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    no start condition for 850 850

    posted by  KlausC on  Sat Apr 15 13:32 CST 2006
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    Mark,
    I just saw your original post. If you have been unplugging and plugging the MAF, check the wires going in to the plug itself. I seem to remember some posts about the wires breaking near the plug. Check them carefully.

    Klaus
    --
    (V♂LV♂s 1975 164, 1995 854T, 1998 V70R)








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      no start condition for 850 850

      posted by  someone claiming to be markoman on  Sat Apr 15 15:29 CST 2006 [RELATED]

      will do....I have been staring this thing down, looking at connections and vacuum hoses for 2 days.

      thanks again for your help - relaly appreciate it.
      mark






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