Hello,foggydogg wrote: ↑31 Oct 2022, 09:38 This is the hardest working device in the electrical system; it is energized from just before startup until the key is back in your pocket. Aside from an academic interest, spending many hours of bench time replacing caps and reflowing joints, then putting a 25 year old relay back in the car, doesn't strike me as progress. The windings on the coils are still 25. The contacts are still 25.
I just bought four from one of the vendors I posted earlier, and have replaced them in each of my cars.
If the original post on the other thread was about getting your car running, this seems to be quite a distraction. My suggestion on that thread was to replace this relay with a new item as a matter of routine maintenance; I consider the piece to be consumable, somewhere between spark plugs and O2 sensors.
Robert goes on several rants in his videos about getting original relays out of any P80 at this point due to age.
You MAY have just revealed a crucial piece of information i have been looking for.
Are you saying that the relay coil gets energized just before start of the engine then stays in that state for the entire time that the engine is running? So does that mean that technically it could be replaced with a jumper in an emergency no-start condition on the road somewhere?
The answer to this can be very helpful to me, but you have to be sure.
If that is true though, then what regulates the fuel to the engine if not that fuel pump controller?
I understand what you mean about replacing the relay as it being something like the way you would routinely replace a sensor, but they are getting over $75 on Amazon for one piece. Any ideas there?
Thanks for the reply this could help a lot.






