Firstfives.org

I realized when looking at my car that I do not believe that the Auxiliary fan has ever worked on this car (80 528i). Ive done a few tests to see if it would turn on normally, whether through hot coolant temps or with the AC, neither make it turn on. The fan spins by touch. But, the connectors going...

Ok, well check this out, add it to the list of causes of crappy starting, then point fingers and laugh! I looked through the schematics Peter talked about and somewheres either in there, or somewhere else I read that the bosch connectors going to the sensors located on the thermostat housing need to...

I wish bavauto had a way I could get a listing online of the items Ive purchased for this car. But, just by looking quick at the price tag of that sensor, Id be willing to bet I bought all of them but that one when I changed out the thermostat housing. Ill test that thing out tomorrow, but, I also l...

Of all the cars I remember having in my time, when the key is put to the "on" position (not the start position), the fuel pump engages and pressurizes the line. Tell me this also holds true for an '80 528i. If youve followed any of my previous threads, Ive been trying to track down a start...

No better time than now to test out the cold start valve, since its 45F outside here in WI. Pulled the cold start valve, and wrapped the end in paper towel so that if it did spray, I could easily see it. Nothing, not a drop. While I go through the book to diagnose whats up with that, feel free to ad...

Update: So, after thinking some more of this out, I considered that the Fuel pump may have been bad. I was going to test it, but didnt have the correct connector to do it at the time. So, after more thinking, I figured it cannot hurt to purchase another Fuel Pump and give it a try. New fuel pump ins...

Yep, it takes a bunch of turns to get started, then once it pops over, it will die. Do that a few times, then it will run steady. I checked the oil for a gas smell, and it kinda smells gassy, but not really too bad. But, then heres another symtom that can also lead me to bad injectors. Once the car ...

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.

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 p...

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 belie...

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.

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...

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...

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...

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

I will get under that today, does sound easy.