Ok fellow Diesel man I have a problem with my Dually 1993 since it has started to get cold my guage fuse is blowing. But when the truck warms up it will stop blowing fuses and all the guages will work and will work as long as it stays warm. I went into Wally world for an hour and came out and it didn't blow a fuse but when I went to my sister for turkey day and I started it first thing in the morning and it blew a fuse (after I drove it for about 10 minutes and then stuck a fuse in it and it quit blowing fuses) and was there for most of the day and BOOM I hit the ignition switch and it blew a fuse I drove it to the gas station bought more fuses and stuck one in it and the guages worked. Got in it today and BOOM it did it again. Can or has anyone had the same problem fuses aren't cheap. Thanks

Rick:mad: :mad: :mad:

The OPS is the jinkiest sensor feeding the guages. I had one shortout internally but I saw the oil pressure go all the way up when it did.

This is just a thought.

If a ground wire (some where?) has brocken or opened, it is possible to get a back feed through 2 circuits or more.

Because you stated the problem disapeared "when the truck warms up" It reminded me of a problem I once had with a bad ground,

Is it only 1 fuse blowing or is it 2 separate fuses blowing at different times or the same time???

good luck

Iirc, the GAGES fuse also services the fast\cold idle circuit - check the wiring between the switch and solenoids.
Also the solenoids - one HPCA in the IP, one FI external on the IP, throttle cable side.

Certainly seems more likely!

It would seem to me that if it was the cold advance/high idle it would blow the fuse even it is warm outside. It only does it when it is cold outside. I don't think the High idle is hooked up because I put the cooling upgrades. But it does smoke alot when it starts up which tells me the cold advance isn't working I will look at the cold advance and see if there is a bare wire or something noticeable

Rick

I believe the cold idle circuit is different from the cold advance you speak of. Of course I could be wrong.

Fuel heater.

Cold advance solenoid is inside the top cover of the pump, all it does is dump housing pressure inside. Cold Fast idle solenoid is just a solenoid that pops up when energized pushing holding the throttle lever in a fast idle position. Both solenoids are on the same circuit, its possible that if you have one of them disabled and unplugged, the loose wire is grounding on you. Other possibility is the Temp Sender that controls them. Fingers makes a point too, could be wiring to the fuel heater, this truck should have the firewall mounted square filterbase with heater inside, unplug that and see if it fixes it.

My 93 did the exact same thing. It was a bare spot on the wire going to the fast idle solenoid that was shorting to the valve cover.

Ok an update I put the block heater on last night and got in it and turn the ignition switch and it didn't blow a fuse SO it tells me that it has to be a sensor I changed out the Temp sensor this summer so it would only leave the OPS but just in case where would I find the fuel heater, I have the cannester type fuel filter that sets behind the plenium, that makes sence too that could be going bad. I looked at the wiring around the IP and it all looks in place. Do you all think a bad OPS could cause this problem thinking on disconnecting it and turn the switch on tomorrow and see if it blows.

Thanks

Rick

A short would more likely burn out the OPS itself rather than a fuse.

Which fuse are you working with. Let us know by fuse number and amperage.
There are several fuses connected to the instrument panel and without knowing which one it is hard to help.

6.5 TD had the heater in the base of the Fuel Filter canister behind the intake. I think the wire was in the base.

It is the fuse that say Guage and it is a 30 amp Fuse. Can the fuel heater be diconnected?

Rick

Please expand comment below here 1 liners don't help much

Fuel heater.

I would take the advance wire off the pump and check it with an ohm meter to ground and see if it is shorted. That wire is fed off that same fuse.

Please expand comment below here 1 liners don't help much
When should the fuel heater have power? I'd like to check mine before it's too late.