Snipped AC belt, now the car wont run

[taiden]

Checked and replaced all vacuum lines. I tested all vacuum lines and fittings to 25 in. Hg.

Car still runs like ass. Vacuum at idle is 5-3 in. Hg bouncing around.

[jlevie]

Have a smoke test run to check for intake leaks. there are other possibilities, but there is no point in invetigating those until intake leaks are eliminated.

[taiden]

All intake leaks are eliminated.

Remember that this literally happened suddenly between starts. I drove it up and down the street, ran mint. Put it on ramps. Turned it off. Five minutes later it wouldn't start at all.

All I did was cut the AC belt.

(Which I actually just got a new one and put it back on for shits and giggles and it had no effect)

[Danny]

Fusible link?

[KVF]

Tough one... Perhaps you had some crap in your tank that was moved into the pump or filter when you put it up on the ramps. Maybe check the pump & filter.

[taiden]

That would cause a lean condition. This is running pig ass rich.

When I pull the fuel pump relay the car runs amazing for about 2 seconds and dies.

Also the cold start valve passes the bentley test.

Fusible link? Never thought to check that. That's the kind of ideas I like.

[taiden]

I'll be completely honest, I can't find a fusible link on my 85 318i. The Bentley manual doesn't mention one. Is there one?

[taiden]

I think I got it figured out. It is so painfully simple and so painfully obvious. I feel very sheepish for going through all that work to find this.

If you feel like taking a hack at a guess before I reveal the answer, give yourself this chance to guess.




AFM < highlight that to see the answer

[Simon S]

like it become disconnected ?

[iChase]

My car was doing something similar. It would start but it would run really rough, smoke, smelled very rich etc etc. I ended up changing my fuel filter and it made a world of difference.