1993 Infiniti Q45 Engine pulley will only turn 1/4 turn

  • 1993 INFINITI Q45
  • V8
  • AWD
  • 155,000 MILES
I have a 1993 Q45 and had just got done replacing my BCM because none of the windows or seats would work. Got everything working and drove a 1/4 of a mile to gas station to fuel up but car started sputtering very bad but barely made it to the pump. I got gas and got ready to start it and it just made a click sound at the starter. I had just brought new battery earlier that day, so I know battery was good. I had to pull car back home and I took starter off and got it tested and it was good. My anti-theft alarm light is not coming on at all when I take key out of ignition now. I replaced all the anti-theft relays (3) and the anti-theft control module. Replaced the starter relay also. I tried to turn crankshaft pulley with a socket and it would only turn a 1/4 turn and stop. Clockwise and counterclockwise and stop.
Do u think my engine has locked up or could it be a starter kill on the anti-theft system that the book isn't telling me about. Could it be the timing chain broke or what. I do all my work myself and need an experts advice on this one. Don't want to start taking motor apart if I don't have to. Can u please give me some insight on this one because it's got me puzzled.

Thanks in advance for your expert opinion!
Do you
have the same problem?
Monday, August 2nd, 2010 AT 10:05 PM

1 Reply

Got a 94 Q 45 with the same issues. Did you ever find a solution to your issue? If so what fixed it?
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Friday, August 31st, 2012 AT 10:05 PM

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