Originally Posted by flatlanderbill (Post 4462780)

Were they the atwood in line blowers? If so, i have had a couple of those melt down for no apparent reason. Attributed it to time in a wet enviroment. The replaced them with a jabsco unit.

Originally Posted by BUP (Post 4462785)

The jist

Fuse protected ? What size fuse ?

Dirt dobbers like to nest in them and or in the hose ducks

restrictions in the air ducts or vents and or again nests of some sort built in them or ducking from whatever ie animals - dirt dobbers, rats I have even stuck in them.

plastic bags or whatever gets sucked up into them or the hose ducking - check for any restrictions.

next when blowers turn on, the end vent hose portion can get sucked up against anything - the bilge floor, a stringer, a bulkhead or whatever creating a total restriction of air movement thru the blower inwhich causes them to run very hot. very common - the reasons installed vent hoses improperly or to long or end of vent hose not sucured in place that gets sucked up against whatever when the blowers are turned on,

or the vent hoses collapsed

Most of the time its installer problem that caused this for brand new installs that fail in short order.

or a wiring problem or fuse problem ie voltage problem of some sort as well

Originally Posted by SB (Post 4462790)

I've seen them mounted in a spot (bottom of slight U or L) where water collects in them. I'll know it first hand when someone turns their blower on and you hear a slight gurgle of water.

Originally Posted by zz28zz (Post 4463591)

+1 on the dirt dobber nest. Lost 2 blowers at once due to those little bastards building their nests on the fan blades.

Originally Posted by 33outlawsst (Post 4463644)

Its probably that ECM reflash that failed and shorted out the blower sensor's, post your serial # of the engine so we can help :angry-smiley-038:

Originally Posted by 33outlawsst (Post 4464531)

LMAO, I just sent him a ecm to reflash, Im having the blower rev limiter increased to 10k revs and the protect interrupt installed :Score-101010:.......good luck with the M-dobbers

Originally Posted by SB (Post 4464540)

FYI: make sure to get the water cooled blower housings if you do this !