beemer problems, talk to me
 

i just bought my girl a beemer, an old 85 325E

bought it pretty cheap so dont mind fixin a couple things on it, so heres the skinny

started it up earlier today, had it runnin and idleing for about 2 minutes, it died, i got it to start once more, and it wouldnt rev past 2K with the gas even all the way in

i took off the fuel line to the fuel rail and the rail is dry, the line doesnt give any gas while cranking, and doesnt prime

since it had started before, that lead me to belive it was out of gas.. i put some in and i still dont get any gas outta the line

so now im searching for new problems

i have the fuel pump as #1 possibility (only cause i cant think of any others) but i wanna be sure before i spend $200 on a new one... ------ foriegn cars and there expensive parts

so anyway, give me some ideas, any help is appriated

Re: beemer problems, talk to me
 

is there a relay for the bump in that old ass car, or maybne the main relay is bad, but if you cant here then its gotta be the pump

Re: beemer problems, talk to me
 

my first experience with a bmw so i dunno about the relay... i'd assume there is. but i dont hear a click like the honda relays so i dunno

Re: beemer problems, talk to me
 

Sounds like the fuel pump is dying. if its an electric fuel pump use a jump wire in the diagonstic port for the fuel pump and go listen and see if it sounds loud and strong.

Re: beemer problems, talk to me
 

check for voltage to the pump while cranking. If tis bad buy an aftermarket pump.

Re: beemer problems, talk to me
 

Don't tell me you'd seriously pay 200 for a damn fuel pump?

Re: beemer problems, talk to me
 

Just get an inline pump. like $50.

Re: beemer problems, talk to me
 

Guess I'm the only one to see beener problems :-\

Re: beemer problems, talk to me
 

buy a manual and test the fuel pump with a meter

Re: beemer problems, talk to me
 

for a $200 car it aint all that bad really

is that gonna flow well enough for it?

as for the other two suggestions i'll check them out asap, we just got 8 inchs of snow so i aint doin ---- outside today, lol

im going to download a manual tonight, why pay $20+ when i can download for free

Re: beemer problems, talk to me
 

You've got L/K jetronic which is an oldass bastard system.

You might have a tachometric relay which relies on a feed from the coil to run the fuel pump, or you might have something a bit less ----.

Just unplug the pump connector and check for 12v and a good clean ground.

Re: beemer problems, talk to me
 

so if it relies on a feed from the coil what do i need to check? im gonna snag a meter tonight and check everything tomorrow

Re: beemer problems, talk to me
 

Its more complicated then a standard relay and i'm going on what my 205 had, not your beemer (of the same era). The tachometric relay if you have one will be bigger then the other relays and have an odd pin layout with 2 small male spade terminals not the usual automotive relay.

Basically the fucker clicks if its working. In 205's which have the same management, the tachometric relay goes all the bloody time, so much so, most owners keep spares in the glove box. It controls the fuel pump which fits with your description.

If the relay has gone bad crack it open and check for any signs of overheating or dry joints, they can often be revived by touching up the joints with a soldering iron.

On the fuel pump, unplug the connector and make sure at least one pin changes from 0->12v (relative to a ground/the chassis) when you put the key in the run position.

Re: beemer problems, talk to me
 

thanks for the info, one more question though

would it be in the same location like a hondas relay? under the dash on the driver side near the hood latch there is a black box that has a plug goin into it, is that what im lookin for? or is it under the hood?

Re: beemer problems, talk to me
 

It should be underhood.

Re: beemer problems, talk to me
 

thanks

it'll be a bit before this thread is updated much more, had to spend $500 ------ bucks which basicly broke me