1998 BMW 318i - Won't Start

[prosnow]

I got this car in just yesterday, customer said it just stalled now it wont start. I scanned it got camshaft position sensor. Replaced the sensor and spark plugs but still not starting.... any way it could be crankshaft position sensor but just not registering?? any ideas would be greatly appreciated..

Thanks

[steven kiser]

ok, now i'm going out on a limb but you have fuel pressure and impulse, correct? since the sensor was replaced, again, i'm assuming you have no spark. the crank sensor ( i believe this one is on the left side of the block, rear.) will cause a no start. it's also called a engine speed reference sensor. did you test the lead to the cam shaft sensor for power and resistance. in the past i've run into wiring issues with beemers. don't know if this particular one has this but, if the harness breaks out of the bulkhead and comes across the top of the engine start there. look for ground issues. if the motor mounts are weak the harness may have been effected by the rocking of the engine much like the old pull tabs from the beer cans. they would eventually snap in 1/2 if bent back and forth enough. i've found on this particular harness (if this is the one) there will be more wires ready to break. another thing i ran into a few tines is the oil pressure switch starts to leak and pumps oil into the harness all the way to the main plug causing issues.

[mopwrforme]

if by the crankshaft sensor not showing am rpm reading and not being bad yes it could have a wireing issue between the sensor and the ecm. usually and with almost every crk circut if your getting comm. w/ecm and can read the datastream your seeing a delayed signale of what the controller is seeing. if youve got no engine speed on the datastream id ck the wireing between the sensor and the controller. first see if you have good grd, and reff. voltage at the sensor. good luck let us know how it goes

[bmwtech01]

If you still have this vehicle and it will not start after you may have tried everything. You may want to remove the crankshaft pulley and see if the rubber is ripped on the back side or if it falls off in two pieces. If you find this the car is not starting due to timing being off. The fix is a new crankshaft pulley.

[fortknoxx]

does it have a timing belt?