UMM, not on my Van. If I move the air-flow "flapper" by hand with the key on, the fuel pump starts up. I do this to quickly get fuel pressure up after maint. on the fuel system (like yearly fuel lines). Mine is AFC, not H2O, so that may make a difference.
Justin M. Mayrand 1980 Westy "SuperVan" On Aug 2, 2005, at 9:44 PM, mark drillock wrote:
> The fuel pump will not run just because the key is switched on. The > fuel > pump only runs when the ECU tells the fuel pump relay to energize. > When > you first turn the key on the pump should run for 1-2 seconds then > stop. > If it does not do that, you need to track down why. The only other > time > the pump is told to run is when the ECU thinks the engine is turning. > The only way the ECU can tell if the engine is turning is when it sees > pulses from the hall unit in the distributor. No pulses means no fuel > pump run signal will be sent. > > Mark > > VWNut Hawk wrote: > > > >> I have a 88 that runs great. After about 45 minutes of running, >> it cuts out. >> Soon after that it stops completely. I noticed that the fuel pump >> stops pumping. >> I rigged up 12 Volts and powered the pump manually. It runs and >> the engine starts and >> runs. >> >> Any idea where to start looking for a bad component or bad >> connection? >> >> >> >> >> > > > |
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