![]() ![]() Thus, when they rotate, small pockets of fuel can be trapped, pressurized, and released. The inner gear is offset from the outer gear. Within a gerotor pump, there are two interlocking gears, a toothed inner gear and an outer ring gear with smooth curved lobes. Gerotor: A gerotor pump also uses positive displacement but uses different parts to achieve that method.Different types of vane pumps include rolling vane, sliding vane, flexible vane, and swinging vane. The vanes close the small amount of fuel as the rotor moves, and release the fuel once it crosses the outlet valve. Because it is off-center, it creates a crescent-shaped pocket of space that lets the fuel in. Evaporative Emission (EVAP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay ETC/ECM 15A Throttle Actuator Control (TAC) INJ 1 15A Fuel Injectors-Odd-Numbered. Inside a rotary vane pump, a rotor with “paddles” operates off-center within a cavity. 997 Turbo / GT2 - Fuel Pump Relay Fuse - Earlier today I was installing some interior LED bulbs and popped open the fuse panel to troubleshoot something. IGN 1 Relay SBA Fuse, ETC/ECM Fuse, PCM 1 Fuse, INJ 1 Fuse, INJ 2 Fuse PCM 1 15A Powertrain Control Module (PCM). Rotary vane: Like mechanical pumps, rotary vane pumps use positive displacement to move the fuel along.These are often mounted under the car or in the engine bay. Inline: Much easier to replace than an in-tank pump, an inline pump is located between the gas tank and the engine and is installed within the fuel system track.This helps protect the module, and the gas helps keep it cool. In-tank: The majority of new vehicles sold today use fuel pumps that are located inside the fuel tank.The power (i 2r) loss that creates heat at this point being proportional to the square of the current! In your situation this won't cause an increase in overall current draw from pump, it might even be a tad less so fuse won't be effected.Īs an example I had a suitably fused high current DC connection on a boat secured solidly through 15mm plywood by M12 nuts and bolt. The heat damage occurs due to build up over a significant amount of time often due to the tiniest additional contact resistance allied to constant significant current draw. This is not at all unusual Louis in any electrical circuit high or low voltage, AC or DC. just odd that we have the exact same symptoms, but in any event, have now solved with a solution just like yours. happened to me with the stock pump, although if the issue is a faulty connection in the fuse block this would melt the connection but not blow the fuse. Thanks for the info, and wonder if this isn't a common problem (well, at least more than just the two of us). Not saying that applies to your car Louis but it may to others in the future, you may just have a loose connector. Maybe a good idea to break and make the fuse box connectors to ensure good connections? I suppose we have a mentality that M3W's are still "new" cars and shouldn't suffer from problems like corroded electrics, thats for "old" cars, but some are now over 10 years old and have sat in cold damp garages. I think your problem is with the fuse box installation and it's poor connectors. The Range Rover V8 EFi owners researched the issue with the standard pump pretty well, although I will agree it is vastly over specified for the S&S X-Wedge requirements. ![]() There have been very few (none?) fuel pump failures reported after changing to the Walbro GS342 fuel pump. It is not a common problem, most failures are of the original specification fuel pump, not the power supply. ![]()
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