Where is the fuel level sender on a BMW E30?
Replacing the fuel tank level sending unit follows a very similar process. On late-model E30 and E36 BMWs, there are two level sending units–one on the left side, and one on the right side that is integrated into the fuel pump.
When to replace the fuel pump on a BMW E30?
For these E30 owners replacement of the fuel pump is quite similar to replacement of the fuel filter (see Project 4). This text, however, will focus on the fuel pump and tank sender replacement for 1988-and-later models. First, prep the car by removing as much gasoline from the car as possible.
Where is the fuel pump sender on a BMW?
BMW designed the car intelligently, so the fuel tank senders and the fuel pump are very easy to get to. (On other makes, you may need to drop the fuel tank to do the replacement.) With the back seat removed, you will see sound-deadening material with two flaps, one on the right side and one on the left.
What should fuel pressure be when no Buzz?
Fuel pressure is typically in the 35 to 45 psi range. If your Anti-Theft light is flashing; the anti-theft system is disabling the fuel pump to prevent the engine from starting. Bad fuel pump (Pump should run for a few seconds when ignition key is turned to start, no buzz means no fuel delivery to the engine).
Why does my fuel pump make a loud whine?
Most fuel pumps will produce a quiet hum during their normal operation, however, an excessively loud whine coming from the fuel tank is usually a sign of a problem. There may not be enough fuel, a damaged pump, or contaminated fuel inside the system.
Fuel pressure is typically in the 35 to 45 psi range. If your Anti-Theft light is flashing; the anti-theft system is disabling the fuel pump to prevent the engine from starting. Bad fuel pump (Pump should run for a few seconds when ignition key is turned to start, no buzz means no fuel delivery to the engine).
When does a fuel pump overheat the engine?
When the fuel pump is heated frequently within a few moments of turning the vehicle on, such as is common in stop-and-go driving patterns, the fuel pump may overheat and cause the engine to overhead too. Typically, you may drive for 15 to 30 minutes, and then suddenly stop working and the engine gets hot.
How does an electric fuel pump keep cool?
Electric fuel pumps run continuously with your engine, delivering high-pressure fuel to the fuel rail and injectors. Fuel pumps keep cool by staying submerged in fuel. If you make a habit of running your tank all the way to empty before filling up; your fuel pump will most likely die before its designed lifespan.