Topic: Stupid Jeep, part 23

[Mozman68]

don't think the computer reset would help in any way with the speedo. I would pull the cover off those wires and remove/replace the burned portions (solder and heat shrink tube on top). I wouldn't be surprised if the speedo suffers from a similar problem.

yep...it'll be one of those days when I wished I worked at a garge and had a lift.

Those wires run up and over the transfer case....supposed to be rainy tomorrow. Should be a good day to trace wires.

[Mozman68]

Well...that's three 30 amp fuses that have blown. Good thing I've been carrying a box of them.

I'm guessing it's a combination of the fan temp being set too low and the fuse being too small for the high speed coming on.

Guess I'll be moving up to a bigger fuse.

[Torch_Ind]

Are you using a blade fuse or mini fuse?

[Mozman68]

Blade....I figured bigger was better.

[Torch_Ind]

Blade....I figured bigger was better.

you should run the maxi fuse not the blade fuses if thats not what your running.

or even better circuit breaker

resettable


auto resettable

[sharpxmen]

doesn't matter what type of fuse it is, if one 30 amp type will blow so will the other ones - it means he's got more current flowing thru it than the rating and it serves the purpose well (interrupts the circuit once is overloaded). He will need to either use the low speed or up the wires and fuse to handle the amps on the high speed.

[Torch_Ind]

the small blade fuses won't handle the constant draw sure some may handle it for a bit.  I have also had some were it wasn't pulling the max the fuse could take and it didn't blow the fuse but it melted the fuse holder from the constant draw and the connections and wire couldn't handle the heat generated.  heat = more amps then norm also.

done it with stereo stuff to..   that's why I suggested the heavier style holder.

[sharpxmen]

the small blade fuses won't handle the constant draw sure some may handle it for a bit.  I have also had some were it wasn't pulling the max the fuse could take and it didn't blow the fuse but it melted the fuse holder from the constant draw and the connections and wire couldn't handle the heat generated.  heat = more amps then norm also.

done it with stereo stuff to..   that's why I suggested the heavier style holder.

bad contacts will result in heat. bigger/larger size (not amp rating) fuses will most likely have larger terminals so less likely to fail, but if everything is new and properly sized 30 amp fuse is supposed to fail at over 30 amps and hold up to that. Now, what can happen is to stick a 30 amp fuse in a 20 amp rated slot and that's when you melt the plastic (same with the wires) - but that is a different problem.
in this case bigger is better (or safer) for sure.

[Torch_Ind]

bad contacts will result in heat. bigger/larger size (not amp rating) fuses will most likely have larger terminals so less likely to fail, but if everything is new and properly sized 30 amp fuse is supposed to fail at over 30 amps and hold up to that. Now, what can happen is to stick a 30 amp fuse in a 20 amp rated slot and that's when you melt the plastic (same with the wires) - but that is a different problem.
in this case bigger is better (or safer) for sure.

yup bigger better for sure. I had some rated for the fuse but they still burnt from just not being big or good enough contacts..  same with stereo equipment/fuse holders. I would go with the maxi fuse set up at the least for more of a constant draw aspect..

even factory applications run the maxi fuses for the most part for fan or constant currant applications. 

[Jeffy]

my solution= toggle switch.

You still need a fuse.

[Mozman68]

New TPS went in without much problem...not sure why, but I expected a difference.  I guess there was nothing wrong with the old one as nothing has changed.  Oh well...off to trace the speedo wire if the wife ever gives me a break from my honey-do list....

[Mozman68]

oh...and put a 40amp fuse in and haven't had an issue with my fan since.

[aw12345]

Sure hope you used a maxi fuse holder and fuse for your 40 amp fuse.
the 30 amp fuse holders for the smaller fuses fail over time, the 40 amp small blade fuse holders definitely do not hold up over time, seen to many connection problems and melted fuses with those, a maxi fuse fixes that problem

[jfrabat]

oh...and put a 40amp fuse in and haven't had an issue with my fan since.

I use a 40A maxi fuse on mine, and have yet to blow it once in the 3 years it's been in there...

[Jeffy]

I use a standard blade fuse.  I did have it blow once but that was with the thermostat turning it on and off all the time.  No problems without the thermostat.