volvo blowing fuses

Sounds like a short in injector wiring or ECM wiring. A short in those areas would likely feed back and blow the fuse as they are both fed off the switch through the ignition circuit.

 

If I were a betting man, I'd say a harness has been rubbing against something and chafed the insulation, causing a short to ground. Sucks, but all you can do is trace the wiring back until you find it. If it's not in the wiring, I wouldn't rule out a short-circuited injector or engine management controller.

Not as likely, but could the starter solenoid possibly be sticking and causing an overload? Only two things can blow a fuse, a short, or too much current draw. And a flaky capacitor in the engine control computer could cause that.

 

Best bet would be to get an electrical schematic for the truck, see what gets powered up by that circuit, then disconnect each circuit 1 by 1 if possible until the fuse stops blowing. Once you have it narrowed down to 1 possible circuit, test the suspected circuit for a short or ground fault.

 

Another possibility is that water may have found its way into a connector somehow... This is the time of year for it... Ice melts and gets into places you wouldn't believe.

 

VOLVO?! Ain't that part of a girl's hoo-ha? *scratches head* In all seriousness, though, sorry for your misfortune.

 

Having started at CRST and being familiar with their "maintenance" and "repair" department, as well as the usual range of zeroes that pass there, I would never buy a truck that had possibly been a former CRST unit. I was told to bypass the CR terminal with a leaking drive axle hub seal, and routed 4,000 miles on another truck after I told them it had steering/power steering issues.

 

Check to see if you have the same issue when u move your steering colum I've found a lot of ignition wires touch the colum frame and blow fuses try to see if it will happen in different positions