M35A3 Idle adjustment

[1 Patriot-of-many]

Don't the zombies come out after the EMP renders everything unusable? That's why I bought my A3. The CTIS just pimps up the cab so I can get the chicks in my ride! It doesn't need to actually work.

Hopefully. I don't stock cheap russian ammo for the **** of it.

 

[Rustygears]

The idle speed is supposed to drop a little when you shift from neutral to drive or reverse. On my A3, neither the unloaded idle in neutral or the idle in drive or reverse is ever rough. It has always purred like a typical cat 4-cycle diesel.

 

[RIDDLE1]

Mine runs great under throttle but when it is idling it vibrates the whole truck pretty good.

 

[maccus]

RIDDLE1 what is the idle RPM when the engine is warm?? Mine idles very smoothly.

 

[RIDDLE1]

RIDDLE1 what is the idle RPM when the engine is warm?? Mine idles very smoothly.

I don't really know. I have a tach issue that I have not had time to fix yet.

 

[goodguyzy]

should idle at 750

 

[mktopside]

Uh, what ECM? There is none. There is a mechanical high pressure fuel pump, that's all. The injector timing and metering on the CAT 3116 engine for the A3 is all mechanical and under the valve cover. There is no traditional Bosch or roosamaster metered pump like on the A2 or CUCV and definitely no ECM on the A3. The only thing in an A3 with a chip is the CTIS control head used to fill the tires (when it works) with air. That's it. This makes the engine EMP-proof. Same goes for the auto- tranny control. It's all mechanical too.

Technically all it has is a low pressure lift pump. The injection pressure is not created in the "pump" like on a Cummins or a GM 6.2. Fuel is supplied to the injectors at low pressure, and it is boosted inside the injector to where it needs to be.

 

[olewhiskey]

I have one out of three that idles rough in gear, no clear ideas here huh?

 

[187]

There is an idle adjustment in the TM. I followed it to adjust mine. Very simple. I believe the TM says RPM should be between 750-850 at idle. Simply loosen a lock nut, adjust the screw, and ret-tighten the lock nut. It took about 5 minutes. The adjustment is on the front, drivers side of the engine very close to the top....don't remember what its called....but it is in the TM and self-explanatory.

 

[Hoefler]

Its in th TM9-2320-386-24-1-2 -page number 0298 00-4. Mine idles at 500 RPM-have had two others also idled at 500 or so. Looks like its time to make an adjustment.
Pete