KDS Smart start issues

[jjb]

I have an M998 (rebuilt in 2005) with KDS smart start box. The wait light does not come on, fuel gauge isn't work but all other gauges seem to work fine. I can get it to start with starting fluid and it runs fine. I opened the box and see what appears to be a burned diode (see picture). I tested with an ohm meter and get 100ohms. No idea if that is good or bad though. I also tested a couple of the glow plugs and get no reading. Do I need a new EESS or is it just the bad glow plugs? I am worried if I just replace the glow plugs and there is some other issue it will just burn out the new ones.

Not sure if its related but with the key off when I connect/disconnect battery cables I get some light arcing. I do not see that with my M1097.

 

[Mogman]

You need new glowplugs and a new EESS box and never use ether on that engine again that is strictly taboo.

 

[jjb]

You need new glowplugs and a new EESS box and never use ether on that engine again that is strictly taboo.

What other option is there to start it when the glow plugs are not working and its 20 degrees out? I generally only use ether to seat stubborn tire beads

 

[Valor]

What other option is there to start it when the glow plugs are not working and its 20 degrees out? I generally only use ether to seat stubborn tire beads

Try WD-40 instead. No ether, starting fluid. That "diode" that looks burnt is a resistor. From looking at the colored bands on it, it just might be a 100 ohm resistor. It got hot for some reason. Good luck.

 

[MarkM]

BBROYGBVGW. Those of you with some old electronics background will know the meaning. I learned it some 40 plus years ago.

Mark

 

[thompsoncustom]

I haven't had any start box issues yet so no experience here but I would try and diagnose it before buying a new one. You already got the box apart so might as well replace that resistor if you can see the color bands on it or find a picture of another KDS board. Hows the rest of the board look? Any idea on what voltage and for how long you are getting power to the glow plugs?

 

[BLK HMMWV]

BBROYGBVGW. Those of you with some old electronics background will know the meaning. I learned it some 40 plus years ago.

Mark

You left off the last 2
Gold and Silver

 

[jjb]

I haven't had any start box issues yet so no experience here but I would try and diagnose it before buying a new one. You already got the box apart so might as well replace that resistor if you can see the color bands on it or find a picture of another KDS board. Hows the rest of the board look? Any idea on what voltage and for how long you are getting power to the glow plugs?

I didn't get that far yet.

Sent from my Pixel 8 Pro using Tapatalk

 

[Mogman]

Actually it is BBROYGBVGWGSN
I'm not sure the little jingle would be appropriate to list here, it starts with "bad boys"
The N stands for no band or "now" in the jingle

 

[Mogman]

What other option is there to start it when the glow plugs are not working and its 20 degrees out? I generally only use ether to seat stubborn tire beads

You could fix the problem.

 

[jjb]

You could fix the problem.

That's the plan but I needed to move them in the meantime. Maybe a torch in the intake? After removing the air filter of course.

Sent from my Pixel 8 Pro using Tapatalk

 

[BLK HMMWV]

Actually it is BBROYGBVGWGSN
I'm not sure the little jingle would be appropriate to list here, it starts with "bad boys"
The N stands for no band or "now" in the jingle

Never heard / learned it with the N
But then it was 50 plus years back

 

[MarkM]

You left off the last 2
Gold and Silver

Wondered if someone noticed lol

 

[TOBASH]

Fix the box more or less permanently by following the link

How to bypass PCB? I am aware some HMMWV owners have done it. TOBASH

I'm not trying to speak sacrilege here, and I don't want to precipitate a war of words. :shock: How might I build a manual control box? My 24Volt Landcruiser just uses a glow wire to show glow plugs are ready, and then she just starts right up with the twist of a key. Civilian 6.2 Diesel...

www.steelsoldiers.com