Crank no spark

[mm svt]

After taking my family to dinner in the marauder and returning home and a two hr rest the car only cranks over, fuel pumps running with pressure, checked all fuses and diodes and all have checked out. What am I missing?

[03Merc]

Ground.


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[mm svt]

all grounds are secure one at alt, new one from back of head to body and battery to block, did voltage check on battery 12.5volts, put the charger on engine start no help,

[mm svt]

Will the car start with alternator disconnected

[Zack]

Sounds like the Crank Position Sensor is bad or unplugged
Did you VERIFY there is no spark?

[ByronRACE]

Are you sure the fuel pump is running during crank? Does the PCM have power? Did you check the fuses?

[mm svt]

Zack great diagnosis, I was out car shopping with my daughter and Riley unplugged it and tested it got zero voltage back, I got home in time to help him drop the a/c compressor and reinstalled everything and it fired up. Thank you kind sir

[Gerry24]

Zack great diagnosis, I was out car shopping with my daughter and Riley unplugged it and tested it got zero voltage back, I got home in time to help him drop the a/c compressor and reinstated everything and it fired up. Thank you kind sir


Nice... Chive on :beer: