Search results

Sounds like it could be a Turbo issue if I have to guess. I have seen where they set a code for low boost pressure but only at higher speeds. Had one guy it would only set if you hit 73mph. So I dropped his max speed to 72 and it never bothered again. Could also be 100 other things. You would...

What year is it? I have manuals available for purchase. Book, CD and thumb drive. Send me a PM if interested. The solid yellow engine outline is a MIL light (malfunction indicator lamp) it sets when emissions related faults basically anything that can cause the truck to emit higher than normal...

Manual? Automatic? If automatic Allison or Aisin? All 3 take different fluid and were available in a 2008 185.

Do you know what sensor exactly? Just being curious. Thanks. Glad you got it straightened out.

You wouldn’t see it. It sucks air around the shaft seal. You could use a combustion gas tester to verify it is not combustion gasses leaking past the head or injector cups. I find that test not very conclusive though.

Are you getting an “E” for the commanded gear in the cluster? Will the truck not start? Have you checked BOTH Allison fuses?

Sounds like it’s time for a test ecu. If they didn’t program the VCS as well that could be the problem. Seen this exact issue once on a propane truck that rolled over. It laid in the ditch for a few hours on its side. Truck ran great but the rpm would creep up after a minute of idling. No codes...

Water pumps will allow small air bubbles, injector cups will allow large amounts of air. Never seen a air compressor fail yet on a Hino but have seen it on Mack/Volvo/Cummins. Look in the truck corner of the head gasket for red waxy coolant and oil leaks. No real cheap fix, my best guess would...

It’s an exhaust leak. When the exh brake is on it puts back pressure on the exhaust. The exhaust rushes through wherever the leak is and whistles. Seen it a hundred times. You can not rebuild a Hino turbo. The Jo5 exhaust manifold bolts love to break and then the manifold leaks. Look there for...

It has an Aisin At45 transmission I believe. Just be sure to follow the installation instructions for whatever pto you install. Muncie or Chelsea. Installation instructions are available online. Had a customer put the return line in the incorrect port in the transmission and it burned the...

If you remove the valve cover you will find the trim codes on the tops of the injectors. They put them on little plastic clips right under where the wires to the injector solenoid terminals are. If you bought aftermarket injectors they most likely are not there. It sounds though like you...

2023 L6 has Cummins engine. They .. (enterprise) have an idle shutdown timer enabled. It’s a different engine than the old J08’s. They don’t want the truck to idle because it creates emission pollutants, also extended idling is horrible for the after treatment system. The only method I know of...

Side tank or rear tank? What is the application of the truck? Rollback/Box? Seen ramp truck guys damaged the fuel tank pick and return lines by hitting it with the ramp. Sounds like if this all started when you replaced the pipe. You could have jammed the pipe in the way blocking the float if...

Email was sent.

Man, not a lot to go on here. Possibly a skewed MAF sensor at cold temp? Could be trimming the fuel, bumping the idle may be giving it enough fuel to pull out of it? You can get a new MAF sensor on eBay or Amazon for under $30. Just google the part # on the MAF and it crosses to a 2007-2009...

Any codes? I can’t recall anything exactly like what you are experiencing but it could be a failing suction control valve. It definitely sounds fuel related. Gently tap on the side of the suction control valve and see if it comes out of it. Wiggle the common rail pressure sensor and monitor...

Mmm hard to say. I don’t diagnose injectors that way. Anything is possible with aftermarket injectors. Did you program the balance rates when you replaced them? What brand of injectors are they? I am spoiled with OEM software. I would check the balance rate and do an injector cut out. On all the...

Usually it’s the draglinks that go. I replace 25 or so a year compared to the handful of tie rods end I change.

Just another quick thought. I have seen those hand primers suck air in before. You could temporarily bypass the filter housing and see if the low power issue goes away. Make sure to use a genuine hino fuel filter as well.