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Thread: P1623 crank no start all cyl missfire

  1. #1
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    P1622 crank no start all cyl missfire

    2000 z3 2.5 roadster...was running idling fine no cel's. Last short drive it did have a couple mild bucks at 40/50 mph..Sat for a couple days then crank no start. Code reader says 1622 and all the cyl missfire codes..this is after a clear. Threw the codes from cranking. Cam or crank sensor ? Does the thermostat issue keep the car from starting..ha.it has new intake boots i just installed plugs and new vc gaskets. I did get a new fuel pressure relay but have not installed it yet, as i havent confirmed if the location is under the steering column ? Also have replaced key and battery is good. Also when changing the vc gaskets i found a copper washer baked into the remains of the old cw gasket where the front coil pack ground wire connects to the engine..i didnt put it back as there wasnt one on the rear grounding point ? The car did run /idle fine (except for the above mentioned mild bucks) for a short 10-15 mile drive after that.
    Last edited by Murphnmattie; 06-24-2019 at 12:41 PM. Reason: Misspelling

  2. #2
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    I’m betting it’s the crankshaft position sensor. What tool are you using to scan the engine computer? What are the codes?

  3. #3
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    +1

    Also fuel pumps are known to just die as well, so do check for fuel pressure.
    Darin
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    +1.

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