Fuel Injector Fuse?

[Qdemption]

I am having difficulties finding the fuel injector fuse for a 92 Q45. I looked in the FSM, found the fuel pump fuse, but no injector fuse. Anyone know where it is? I am already assuming it is in the fuse box behind the battery, just don't know which one it is. Thanks in advance-------- Ben

[DAEDALUS]

You'll have to look at the legend on the inside cover of the fusible link box.

[Qdemption]

Oh lordy. That is a good one. Funny stuff.

Thanks Daedalus.

[Q451990]

Should be the middle brown fuse on the inside top row... it'll make sense when you look at it.

Heath

[Q45tech]

Great place with an amplified current probe or a 0.1 ohm resistor and an oscilloscope to see the current ramp graph of the injectors........as they all are feed in parallel from the fuse.........the ecu switches [closes] the ground individually.

/__/__/__/__/__/__/__/

Never seen this fuse blow as even with WOT and 6,000 rpms, there are only 50 injections per second lasting 10/16.6= 60% duty cycle x 4= 240% or 2.4 amperes +- 10%. Worst case is a cold crank when all injectors open simultaneously for a few rpm/seconds.

A VOM won't be accurate since the response time vs duty cycle is not continuous.........changes with rpm.