Yes! Now i have no fuel with my no spark!

[O 16581 72452 5]

Yes it's true, i tried replacing my crank sensors and now i have no fuel with my no spark. I had been jumping my fuel pump relay to get fuel, but now my pump isn't kicking on this way, no clue what changed. Tried my old sensors and still nothing, do these sensors even affect the fuel pump?

The main relay clicks when i jump the fuel relay, but nothing, tried putting in a known good main relay (from my 325is, are they possibly different?) and still no avail.

I'm on the verge of just getting this headache out of here.

[jmarch79]

If you've ruled out the fuel pump, main and fuel pump relays you may want to look at your ECU.

[O 16581 72452 5]

That's what i was thinking.

[lordofthewaters]

I could be the ecu, or the coil, have you checked it? But if you've jumpered the fuel pump, it should run even with a bad ecu.................

[O 16581 72452 5]

Yeah, i'm confused, i'm going to jump the pump directly rather than through that relay slot and see what happens. IIRC, even with the jumper in there, i had to roll the key to "on" before the pump would kick on.

[PeaveyBassist]

Crank sensor will not give fuel or spark. Other than that... ECU probably.

Will

[O 16581 72452 5]

Just replaced the crank and speed sensor, put the old ones back in and now i still have no spark plus no fuel now...like said in the first line of my post. :P

[O 16581 72452 5]

Slight update, i went to check for a CEL because i read in another thread a guy wasn't getting a CEL and it was his main relay, i too have no CEL, but also noticed when i turned the key over there is a whiney faint sound similar to an old dodge when you leave the key in and get out in the ECU area.

Tomorrow i'm going to swoop on a main relay and ECU from a local parts car with an engine fire, hopefully the relay is intact...which is doubtful.

[euroshark]

I'd jumper them both. It's the easiest way to diagnose a bad relay.

[O 16581 72452 5]

Yeah, jumping them both did nothing, but i'm going to try another relay just because i can get it for free if it's not toast the the fire.

[O 16581 72452 5]

Here's the latest, tried another ECU, no go, still no CEL when key is turned, starting to think main relay, i tried the one from my I, but they are probably different.

[Garageaholic]

Yeah, but relays die hard, I've never had to replace a relay for as long as i can remember or hear of anybody that had to replace a faulty relay... hmmm

[O 16581 72452 5]

Or i screwed up something trying the one from my I and connected the wrong wires which is why i have no fuel now. XD

[O 16581 72452 5]

I don't know if it's because the pin out is different, but i tried the e main relay in my i and it didn't start, put the i one back in and it fired.

*sigh*

[O 16581 72452 5]

Swapped the main relay with the same part number relay from my i, no go, swapped coils, no go. I now have no tach signal, it was moving slightly.