1988 325is cranks but no start.. HELLPPP

[KameiE30]

My e30 just deicide not to turn on.. i was driving it, came home.. turned it off for 20 mins and than it didnt start.. anyone have any ideas.. and where i could start? i need my car asap! Thanks in advance guys.

[billybobjoseph]

If it's cranking but doesn't start I'd check fuel first. Check your fuel pump fuse ( #11 ), then fuel pump relay, then check to see if you are getting power to the pump. You should be able to hear your pump come on if you pull up the back seat and turn the key on, it will run for 8 seconds or so. If all this checks out pull up the carpeting in the trunk and follow the smaller of the two battery pos cables ( black ) to the fusible link. You will have to peel off the rubber cover to make sure it isn't blown. If it isn't you can re-cover it with electrical tape.

[acolella76]

check your CPS.

[KameiE30]

thank you..i checked the fuse and its fine, but where is the fuel pump relay located? im gonna end up replacing the cps.. hopefully that'll do the trick.. thank you !

[KameiE30]

Hey guys.. I replace the pump cause it wasn't turning on.. Replace the rely, and still nothing. I checked the fusible link and it's okay.. How would I got about checking the CPs? Need help guys. Thanks agajn

[jlevie]

The first check would be to see if there is spark when cranking the engine. Check at a plug and if no spark there, check at the coil. Spark at the coil, but not at the plugs could be bad ignition wires, bad distributor cap/rotor, or a broken timing belt.

No spark at all could be a bad coil, bad main relay, bad CPS, bad ignition switch, or a bad DME. Any of those would also result in no fuel pump operation when cranking the engine.

If there is spark, then the next check would be to see if normal rail fuel pressure is present when cranking the engine. Lack of fuel pressure could be a a bad fuel pump relay, blown fuse, clogged fuel filter, pinched hose, bad FPR, or bad pump.