Dear Avsim support Im have some problems getting the apu running on cold and dark in my Pmdg 737ngx when I selected cold and dark in the FMC everything completely shuts down I ran through the checklist carefully I started the battery switch first then the standby switch on auto I have electrical power but when I start the Apu switch it doesnt start it gets stuck on 0 and it wont run at all but when I selected Short or long ngx on my FMC I have full electrical power and the Apu is running fully all the way until the Apu GEN turns blue but once it turns Blue I flip the switch nothing happens at all i kept click on the Apu Gens and Its still blue and my Apu wont Bleed also when I turn on my engs it runs but my Engs wont spool up fully when I idle the engs it get stuck it wont spool at all it says Eng fails when i idle it i try everything to get it going but it seems its not working right and im kind getting fustruated that my apu wont start on cold and dark and my Engs are not Spooling during start up what do i do to fix this?

For battery start: Hold the APU start switch all the way down to START position. After it releases, go up to your electrical panel and note the current draw. The APU starter should be drawing about 250 amps. This means that the APU start sequence has begun. After a few seconds the LOW OIL PRESS light will illuminate and extinguish. Once the egt temperature has stabilized, you can connect the APU generators the tha aircraft bus. If you want to be nice to your battery, attach the external power cart.

First, I know this may come across as mean, but please just understand that if I can't read what you wrote, I can't help you. Please use punctuation.Second, to be honest, you're probably not doing it correctly, or you're not giving it enough time. It's not like you hit the APU start and it's instantly up and available. Please read the introduction and patiently follow the tutorial. When you engage the GENs, you also need to hold your click slightly longer than you'd think. Hold the click for each, and you'll see the light go out.I'd write more, but it really just seems like you're not following how it's supposed to be done, which is explained in the tutorial, and I don't feel like re-writing what's already been written.Both of you: please sign your posts. It's a forum rule.

Edited March 1, 201214 yr by scandinavian13

First, I know this may come across as mean, but please just understand that if I can't read what you wrote, I can't help you. Please use punctuation.

:( +737

May not be the complete answer but I had the same problem ( I think) until I switched the left fuelpump to ON.Martin Drost

May not be the complete answer but I had the same problem ( I think) until I switched the left fuelpump to ON.Martin Drost

The boost pumps can't run off the battery, they need AC power. The APU has it's own DC fuel pump which is more than enough.

Edited March 1, 201214 yr by kevinh