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Thread: FS Ignition wires for M70 and M73 engine

  1. #26
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,613
    My Cars
    11/88 E32 750iL+98 E36M3
    here a pic with numbered temperature sensors in the back of the M70 engine, easier to understand
    Attachment 704136
    Nr.... Sensor type.......................................connect s to
    1 intake air sensor bank 1......................DME1
    2 intake air sensor bank 2......................DME2
    3 double temperature sensor coolant.......each one sensor for each DME
    4 temperature coolant............................EML
    5 temperature coolant............................temperature gage in instrument cluster

    in front of the engine we have these
    Attachment 704137

    Nr................Sensor type.........................................goes to
    1......crankshaft position sensor CPS bank 1...............DME1
    2......crankshaft position sensor CPS bank 2...............DME2
    3...cylinder identification sensor CID / donut bank 2....DME2
    4...cylinder identification sensor CID / donut bank 1....DME1

    Bosch 2500Ohm Sensors, NTC 2500Ohm at 20°C
    Temperatur [°C] ......R [Ohm]
    -40........................45.313
    -30........................26.113
    -20........................15.462
    -10.........................9.397
    0............................5.896
    10..........................3.792
    20..........................2.500
    30..........................1.707
    40..........................1.175
    50...........................834
    60...........................596
    70...........................436
    80...........................323
    90...........................243
    100.........................187
    110.........................144
    120.........................113
    130..........................89


    Bosch 5kOhm Sensor, NTC 5kOhm at 25°C +/-2%
    Temperature [°C]......R [Ohm]
    -30..........................88.700
    -25..........................65.300
    -20..........................48.500
    -15..........................36.400
    -10...........................27.600
    -5.............................21.100
    0...............................16.300
    5...............................12,700
    10...............................9.300
    15...............................7.800
    20...............................6.200
    25...............................5.000
    30...............................4.000
    35...............................3.200
    40...............................2.600
    45...............................2100
    50...............................1.800
    Attached Images Attached Images
    Last edited by shogun; 06-21-2022 at 10:51 PM.
    Shogun tricks and tips for the E32 series are HERE!

  2. #27
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,613
    My Cars
    11/88 E32 750iL+98 E36M3
    @Ericks2002, 1 set M70 ignition wires shipped to Houston, Texas
    Shogun tricks and tips for the E32 series are HERE!

  3. #28
    Join Date
    Mar 2011
    Location
    England
    Posts
    707
    My Cars
    750iL; 330Ci cab; 5GT
    Hi Shogun - looking for a set of leads for my M73, if they are still available please? UK address, thanks

  4. #29
    Join Date
    Aug 2019
    Location
    Seattle, WA
    Posts
    1,491
    My Cars
    '95 540/6, '01 750iL
    Also interested for an M73 application @shogun!

    TIA!

    -Jon

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