I am trying to diagnose a problem with my 1987 325: It cranks like normal and fires after a second or so and then runs for about 5 minutes then dies. It will then crank and bark like it is trying to start. If I let it sit for a bout 30 minutes the pattern repeats itself. I have searched several post with similar problems and many solutions say to replace the CPS or crankshaft position switch. However, some say it is the two sensors bolted to the bell housing others say it is the little tube like sensor clipped to the front of the motor by the harmonic balancer. As I am on a tight budget (currently unemployed) I can't just buy all three. Which is the best to start with?
P.s. I have replaced the main relay, fuel filter, and pump relay and checked the fuel flow pressure as well as made sure the timing belt is not broken.
P.s. I have replaced the main relay, fuel filter, and pump relay and checked the fuel flow pressure as well as made sure the timing belt is not broken.
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