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M998 grrrr I went thru and cleaned all possible connections from the battery to the starter to the engine and alternator. WAIT light still just blinks between 8-23 times and starter clicks several times. What should I try next? Could it be the S3EESS Smart Start box? Does the Engine wiring...

Thank you very much for the advice. I would imagine there is a ground issue because the blinking Wait light is representative of a error code right? I will start going thru the connections. Until the wait light is fully operational the car won't even start right? Thanks again.

Thank you very much for the info. Not sure what the Octopus ground is exactly? Do I use the multimeter while the battery is connected or disconnected? Am I checking for DC voltage or continuity?

I have a 1992 M998 HMMWV And I'm having the same issue many others have. Car would not start and there was no wait light. I changed all the glow plugs and one was definitely bad. That didn't fix the issue. I replaced the PCB with a new S3 EESS Natron smart start white label box and the GPC that...

I have a 1992 M998 HMMWV And I'm having the same issue many others have. Car would not start and there was no wait light. I changed all the glow plugs and one was definitely bad. That didn't fix the issue. I replaced the PCB with a new S3 EESS Natron smart start white label box and the GPC that...

I'm having the exact same issue with the new A3 EESS Natron Smart Start PCB. From my understanding the box just doesn't work sometimes....??? My wait light just blinks from 9 to 23 times and the starter just goes click click click and nothing. I've tried the things you have suggested. Could it...

Forgive my ignorance but what brand are they? KDS? Color? Yellow, green or white? Smart start? Thanks again.

Where is the best place find a PCB replacement for the m998? i've been looking but I'm coming up empty? what is the avg price?

A little bit of a side note but I'm trying to locate a PCB for my M998 HMMWV and having a hard time. The old inter web isn't locating anything good. What is the best PCB, the yellow, green or white box? and where is the best place to find one? thanks for your help!

What size tap do I need to re thread the glow plug hole? I have a 92' m998 with the 6.2 liter engine. Thanks for the help!

Well 7 of the 8 came out fine but one is swolen it's stuck and I even used the jj&a removal tool. At this point it looks like I'll have to break it and fish it out. Where is the PCB located? Thanks again for your help.

I'm having some of the same issues. One of my glow plugs is definitely bad and I'm having a **** of a time getting it out. Where is the GPC or TSU located? How do I know if I still have one? I have a 92' m988 HMMWV. Thanks for your help.

"There are alot of little tricks you could find there. As far as the glow plug system a good way to trouble shoot it is that when you turn the start switch to run and you have no wait light the PCB box is bad, when it flashes the controller is bad, when the light comes on like it should and...

Sometimes it does and sometimes it doesn't.

Hello Fellas, I'll do my best to make a long story short. I have a 1992 M998 HMMWV with 19K miles. I received the unit in good working condition or seemed to be. After a very light 20 miles around the neighborhood I had a no start issue. I had the unit jumped thinking it was the alternator...