Search found 54 matches

by brotherhay
Tue Mar 23, 2010 10:47 pm
Forum: Tech Forum
Topic: 1980 528i Possible Fuel Pump failure, but which one?
Replies: 17
Views: 3710

I agree, it just seems that the pressure regulator is the issue here.

Ill find another one, they really arent that pricey.


EDIT: actually I take that back. They are upwards of $80. Ill get to testing fuel pressure. I have the old regulator also.
by brotherhay
Tue Mar 23, 2010 3:48 pm
Forum: Tech Forum
Topic: 1980 528i Possible Fuel Pump failure, but which one?
Replies: 17
Views: 3710

Ok, so I did some adjusting of a few things, since once it is running its fine. After it had ran for a bit, I went to test out the pumps with the AFM flap "all the way open". I dont even have to push the flap a quarter inch and the fuel pump engages. Fuel pump works, so what could be the problem wit...
by brotherhay
Mon Mar 15, 2010 1:29 pm
Forum: Tech Forum
Topic: 1980 528i Possible Fuel Pump failure, but which one?
Replies: 17
Views: 3710

Ill give that a shot after work here in a few hours. When the key was in the "almost start" position (just past "on") I could hear a pump running, but the sound was not a steady hum. Ill test it out to see if I beat on that thing a little bit if it engages when it should. I believe this one is on it...
by brotherhay
Mon Mar 15, 2010 9:44 am
Forum: Tech Forum
Topic: 1980 528i Possible Fuel Pump failure, but which one?
Replies: 17
Views: 3710

So youre saying with the key in the on position, and flap open the external pump should engage. Seems flap open or not this is when the pump should engage. I dont think mine is doing that.

Might be time for a new/used pump.
by brotherhay
Sun Mar 14, 2010 8:09 pm
Forum: Tech Forum
Topic: 1980 528i Possible Fuel Pump failure, but which one?
Replies: 17
Views: 3710

1980 528i Possible Fuel Pump failure, but which one?

I have a 1980 528i with the 2.8L. I have had this same issue for years now, and have changed out many parts but it has yet to be fixed. Today was the nicest day of the year yet here in WI, so I fired the car up. Thats when I remembered this issue. Basically, it doesnt seem as if the fuel has no pres...
by brotherhay
Mon Jun 01, 2009 1:16 pm
Forum: Tech Forum
Topic: Fuel pump? or what
Replies: 1
Views: 753

Fuel pump? or what

For a few years now, Ive had a problem starting my '80 528i. What happens is it seems to take a while to fire up when turning it over. Each morning, Id say its about 3 seconds before it will fire. My main question is this: Should you hear the fuel pump engage when you turn the key to accessories, or...
by brotherhay
Mon Jun 01, 2009 9:54 am
Forum: Tech Forum
Topic: Throttle bypass screw setting
Replies: 4
Views: 1546

Just out of curiousity, what should the idle be at? Seems either the idle switch, or something is goofy on mine. AFter driving the car for a bit, if i put it in park, it will idle at 1200. If i just start it and let it run it will start around 1200, warm up, then drop to about 850 (where I initially...
by brotherhay
Tue May 26, 2009 1:19 pm
Forum: Tech Forum
Topic: Oxygen Sensor light is on, what to do
Replies: 3
Views: 1217

I suspect you mean the box that the speedometer cable goes to?

I will get under that today, does sound easy.
by brotherhay
Tue May 26, 2009 11:27 am
Forum: Tech Forum
Topic: Oxygen Sensor light is on, what to do
Replies: 3
Views: 1217

Oxygen Sensor light is on, what to do

First post since the new board has come around. I used to go by Michael-WI on the old BB, but now this board is live, its Brotherhay! To reiterate what I have is a 1980 528i. Ive owned this car for many years, and have put alot of cash into it. Well, as of a few years ago (this car only comes out in...