BMW 325i 1992 wont start? no spark or fuel pump coming on??
Answers:
Could be a fusible link.
could it be be that you need a new fuel inline filter it maybe blocked . just a guess.
sorry no idea
check on the carb on the inlet flap ( is it jammed fully open ) have seen this before and fools the ecu . can undo it with your fingers or screwdriver ..once released will fire up on a turn of a key .hope this helps just that i had a similar problem years ago on one
Out of the blue.Maybe spark plugs.
engine has to be spinning and computer needs to see this ( sensors on bell housing and harmonic balancer,) then it will kick in the fuel pump relay,
on older ( 80's ) cars the two sensors from bell housing attach on top of the valve cover, and on two of my cars the connectors have broke and not made good contact,
Look for the emergency cut-off switch. Your manual will tell you where it is. Push it back down. Sounds like its come up somehow and isn't falling down properly. Its designed to cut off all fuel and air to the engine in the event of the car rolling. If its got a working fuel pump, a working ECU, but no fuel going into the engine then its either a blown fuse, a leak in the supply to te engine which you would know about because of puddles and smell, or this switch.
if you`ve no spark i`d be looking at the coil ,dizzy or rotor arm
I had this on another make of car and it turned out to be the crankshaft sensor. The ECU needs to know the engine is turning over before it will power up the fuel pump and HT system. Also check the battery voltage, some ECUs turn themselves off below 10volts.
Try the fusible links..there may be some under teh rear seat as well as in the engine bay. also, in the fuse box..there is a large fuse.about teh size of an old BATA tape..they run about $400.00 at the dealer.
If there's no faults codes all the sensors for the crank and camshaft should be ok, but i would recheck as you Will not get a spark or switch the fuel pump without a signal from either. the white relay under the cover next to fuse box is the main power supply relay for the engine management system, if you swapped the relays make sure you used the right relay in the right connector. However the most likely cause is the you have not connected or the left earth wires on the N/S suspension turret loose.
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