Excellent data -- thanks, Mark! This does not conflict badly with Don Hansen's experience of getting home on a 42Ah battery (no headlights, etc.) on a 400-mile trip. If the engine pulls 6.5A, then a 42Ah battery might manage 6 or so hours. However, Scott Daniel writes to say that, > I can tell you, my 88 740 Volvo with similar electronic fuel injection > and ignition, can suck down battery power fairly quickly , like a half > hour of running without charging from the alternator, will pull down a > 'fair half decent' battery enough that it can't crank strongly enough > to start on the starter. This result is a different kettle of pickles altogether. -- Mike "Rocket J Squirrel" Elliott 84 Westfalia: Mellow Yellow ("The Electrical Banana") 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano Bend, OR KG6RCR
On 8/21/2009 11:46 AM mark drillock wrote: > Ok, on my 1987 2.1, all wbx probably similar. > > Total use by fuel injection and ignition at idle = 6.5 amps > > Measured 3 places and added them. Measured at relay sockets and in > firewall wiring box. > > Fuel pump = 2.3 amps > Coil and relay triggers = 2.2 amps (varying) > ECU and idle circuit = 2 amps > > Mark > > > > Rocket J Squirrel wrote: >> Well that's a right kind offer and I bet the 1.9 and the 2.1 are close >> enough for my purposes. Richard A Jones sought that information a year >> ago >> and was unsuccessful, so this could go into the wiki, too, in case >> someone >> else wants to know. >> >> Fuel pump, ECU, senders, ignition ... I guess a temp sender sends current >> out to the dash gauge. Anything else electrical needed to keep the engine >> running? >> >> -- >> Mike "Rocket J Squirrel" Elliott >> > |
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