Question about Miller Trailblazer 302 Welder Generator 907217 907216

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My 302 trailblazer won't run, it revs up and idles back down, revs up and idles back down until it finally idles back down?

It has 2700 hours on it and had the brushes were replaced when the armiture was replaced. I used it one day and the next couldn't get an arc.

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Posted on Jan 02, 2017

  • 1212 Answers

SOURCE: Miller Trailblazer 302 Gas, will

Check the circuit breakers, one may have tripped or failed, such as CB4 which would also impact generator voltage output and since it controls power to the 24 control system- the first one to check or service. If you can access the rear terminals, check the voltage in operation at both lugs- if you do not get the same voltage reading at each lug of CB4 measuring them one at a time to chassis ground, the breaker is tripped or faulty .

CB1 is inline with the 240 VAC outlet and is ahead of CB2 and CB3

CB2 and CB3 are inline with the 120VAC outlets

In each case, switch them off then back on.

If you have the GFCI option, it may have been tripped by unsafe conditions.

Posted on Jan 07, 2012

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SOURCE: trouble shooting miller trailblazer 302 engine powers out when air arcing

Blow cabinet clean of dust and check connections in cabinet and handle. first, Then check the wires to the step up solenoid and make sure they have sound connections and that solenoid is mounted securely. If you do much outside at night, have someone watch with the cabinet open and see where it sparks when the engine drops speed. Int he dark, even small sparks you would not see inthe daytime or the shop apper reasonably well.

Posted on Sep 25, 2012

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1 Answer

Reduced Engine Power light, rough idle


Hello TMAF...

TRIED most of that TOO...

Finally my codes... said the OXYGEN SENSORS were complaining... OBD... DTC
(on-board-diagnostic... DIAGNOSTIC TROUBLE CODES)

So... of course I changed the... OXYGEN SENSORS.

The "NEW" OXYGEN SENSORS complained just as well...

I have subsequently learned the "SENSORS" are
just doing their job...

In my case reporting on a collapsed catalytic converter.
(muffler is actually a MORE common blockage).

A little hunting around... like Auto-Zone ... Napa auto...
Pep-boys... O'Reilly Auto Parts... even MIDAS might
yield FREE READINGs... (check around).

Just remember to wear your best SALES RESISTANCE...

and look up you prices on ROCKAUTO...
before you go... Hope this helps.

(Unless FREE, I'd make a SPECIAL note (YELP) on
that "shop"... THEY ARE CLOWNS...!!
(in my humble opinion... not MECHANICS)).

ROCKAUTO
2003 CHEVROLET TRAILBLAZER 5 3L V8 Catalytic Converter RockAuto

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May 28, 2017 | 2003 Chevrolet TrailBlazer

1 Answer

My 302 diesel trailblazer runs for a few minutes then shuts down and flashes HI H20 code ,the manual says its a coolant issue but even with the proper amount of coolant it still does this


You need to "burp" you're coolant system. To do this find the upper Radiator Elbow where it goes into the engine, then, use an allen head to unscrew bleeding screw (for lack of better term). place Rags under so as the spilling coolant is caught as best you can (it's basically a fill bolt style, fill radiator until coolant seeps from that hole, lock her back up, repeat testing.

- Logan P. Clayton
Miller Authorized Service Technician

Feb 08, 2012 | Diesel Miller 907218 Trailblazer 302...

1 Answer

Miller Trailblazer 302 Gas, will start but, but won't weld or generate. Does not show any readout on the digital meters, will not idle up, only idles at low RPM's. Any idea what may have...


Check the circuit breakers, one may have tripped or failed, such as CB4 which would also impact generator voltage output and since it controls power to the 24 control system- the first one to check or service. If you can access the rear terminals, check the voltage in operation at both lugs- if you do not get the same voltage reading at each lug of CB4 measuring them one at a time to chassis ground, the breaker is tripped or faulty .

CB1 is inline with the 240 VAC outlet and is ahead of CB2 and CB3

CB2 and CB3 are inline with the 120VAC outlets

In each case, switch them off then back on.

If you have the GFCI option, it may have been tripped by unsafe conditions.

Sep 20, 2011 | Miller Trailblazer 302 Welder Generator...

1 Answer

I have a miller trailblazer 301 G . my problem is that i turn the start switch to run and it doesnt run in high speed. this welder only has 24 hours on it.


i have the same machine, had same problem, changed broken springs on carburator and choke, problem gone. air gas ( authorized service tec. showed me how)

Jul 19, 2011 | Miller Trailblazer 302 Welder Generator...

2 Answers

I have a miller trailblazer 301g. It worked fine yesterday and now only the 120/240 volt outlets will work. No weld output and also the idle will not kick down. when I opened the unit the only visable...


Hi:

Probably your machines just overloaded; the engine will run and produce voltage but no weld output.
Check your fuses F1 and F2, if they are open replace them.
Both fuses are located at left hand side of machine, open it and you will find them on the bracket.

Good Luck.

If this was useful please vote, thanks.
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Apr 28, 2011 | Miller Trailblazer 302 Welder Generator...

1 Answer

What does the code on my miller trailblazer 302,004 mean?


Hi:

That's not a code, 004 means the working hours left before the next oil change.
The display always start at 100 and count down all the way to zero.
If you don't change the oil and reset the count down you will start seeing negative numbers, meaning that oil change is due.
To reset the counter once you change the oil do the following:
Cycle engine control switch from the Run/Idle to Run position 3 times.

If this was useful to you, please vote. Thank you..

Mar 23, 2011 | Miller Trailblazer 302 Welder Generator...

2 Answers

Field wiring taps - wire 480 or 208 3 phase need schematic


Hi:

Follow the link for the trailblazer owner's manual, check section 10 for wiring schematic.

http://www.millerwelds.com/om/o4426ab_mil.pdf

If this was useful to you please vote. Thank you!

Feb 24, 2011 | Miller Trailblazer 302 Welder Generator...

1 Answer

Vn800 running fast on tickover


I am not sure what you mean on the "running fast" statement. If idle speed then turn the idle screw outward to slow down the idle.

The backfire is caused by turning off the ignition key when the bike is at high revs. let it idle down THEN turn it off. The backfire is there because the carb idle circuit is active anytime the piston is in motion. Gas goes into the cylinder as the bike revs down then a hot spot in the exhaust pipe finally ignites the built up gas. There is your backfire.

Is the running fast question answered? Give me more information on the problem if it isn't.

Please rate this answer. Thanks njv6!

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