- Thread starter
- #21
Awesome, thank you. Very helpful! And yes definitely will be reusing the fluid at this point
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
I would bleed anything you can get out of the accumulator now, then "cycle" the AHC (i.e. at least get the pump to run even if you're stuck in L), then bleed more. Getting enough gas out will allow more fluid into the accumulator, eventually you'll be mostly fluid and be able to get to N and/or H. Then bleed a bit more to ensure no more gas at all.
- Thread starter
- #23
Gotcha. Thank you!
It's definitely worth trying to bleed it. The height accumulator will not fill unless certain conditions are met, so your accumulator may or may not have any pressure.
I'd do three bleeders per cycle. Height accumulator, driver, passenger. start the car, attempt to move to N, let is idle for a solid 120 seconds. turn off, bleed again. repeat over and over.
- Thread starter
- #25
@suprarx7nut @LndXrsr now no fluid is coming out of the accumulator nor the globes. Any ideas?
Does your pump run and the fluid level in the reservoir tank go down when you attempt to raise the truck from L to N?
- Thread starter
- #27
Not at the moment just flashing off and stuck in L
Can you get the flashing “off” button to go away by pressing the “off” button on the switch? May need to troubleshoot error codes with Techstream or using the DLC connector:
How to reset AHC pump or bleed air from the system? - https://forum.ih8mud.com/threads/how-to-reset-ahc-pump-or-bleed-air-from-the-system.162264/post-2277554
Likely a pump issue or electrical short though. Could also try to jump the pump with 12v from the battery and see if it runs.
How to reset AHC pump or bleed air from the system? - https://forum.ih8mud.com/threads/how-to-reset-ahc-pump-or-bleed-air-from-the-system.162264/post-2277554
Likely a pump issue or electrical short though. Could also try to jump the pump with 12v from the battery and see if it runs.
- Thread starter
- #29
just cracking The accumulator for a moment I can hear the motor whine but won’t move but it’s only after just cracking the accumulator
ktmracer01
SILVER Star
What part of Seattle are you in? I'm in the Interbay / West Queen Anne area. I've got service manuals and willing to help you try and diagnose it.
Do you have Techstream yet? 
- Thread starter
- #32
- Thread starter
- #33
Yeah! I can come there
Awesome!
Clear those and see if they come right back. I had a pressure sensor alarm like that and it went away on its own after clearing.
I think the pump is just stuck in fail safe. Clear codes, run the car and see if they come right back.
- Thread starter
- #35
Just C1762 came back
Does the pump run?
- Thread starter
- #37
Not that I can tell, the only time I’ve heard it whine is after cracking the accumulator bleeder after nothing came out I closed it and could make the pump whine by pressing up, then it gave up stayed in L and started flashing OFF again
Is there an active test (go into the tab on the right) that allows you to manually run the pump? I forget and I don't have my new laptop running Techstream yet.
Next option for me would be to manually jumper the pump on, but hopefully you can manage that via Techstream.
Next option for me would be to manually jumper the pump on, but hopefully you can manage that via Techstream.
Also, rereading this it sounds like the pump ran successfully here. Have you bled since it ran?
It can take many bleed cycles to clear out that air. Tedious and annoying, but easy.
- Thread starter
- #40
