Hyster S150A:
Poor Acceleration

Unit starts fine, will hardly accelerate until you activate a hydraulic function. As long as the hydraulics are being used unit will accelerate fine, once you let off of a lever, back to poor acceleration, will hardly pull itself.

Any thoughts?
  • Posted 11 Jun 2021 21:42
  • Discussion started by Lenny75
  • Indiana, United States
CCC
Showing items 1 - 15 of 15 results.
Pump mounts directly to the engine.

Thanks
  • Posted 21 Jun 2021 23:55
  • Reply by Lenny75
  • Indiana, United States
CCC
Lenny,

Not able to find any information on your truck. Does the hydraulic pump mount directly to the engine or driven with a drive shaft? I would try to isolate the hydraulic pump from the engine and see if anything changes with the throttle. Will keep looking for info. Thanks.
  • Posted 21 Jun 2021 23:26
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.
Check the general items, coolant level, wire harness connections, fuses. Try entering the number 55555 into the display and see if it gives you access. Good Luck.
  • Posted 21 Jun 2021 22:43
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.
Thanks for that. One minor problem, we bought it at auction and are shut out of the system. Probably have to check sensor by sensor.
  • Posted 21 Jun 2021 22:30
  • Modified 21 Jun 2021 22:32 by poster
  • Reply by JonoG
  • Uruguay
Jonathan Gill
Actually this is a flathead propane. serial misprint...A024DD5289E is correct serial.

My apologies
  • Posted 21 Jun 2021 22:19
  • Reply by Lenny75
  • Indiana, United States
CCC
Lenny75,

Since your lift is older, I do not know if you have the same programming in the engine or not. I will look a little deeper and see what I can find. If you can, check and see if the engine has any codes stored. Thanks.
  • Posted 21 Jun 2021 22:11
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.
JonoG,

You have a CUMMINS 3.3 engine in your lift. Need to check and see what codes you may have stored in the ECM. If you are having the same problem, the CUMMINS engine has an acceleration mode that will raise the RPM whenever the hydraulics are activated. If you have no other acceleration other than hydraulic functions, you have code stating what sensor has failed. Thanks.
  • Posted 21 Jun 2021 22:09
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.
Could you look at ours too ? H4.0FTS P005B02188G 2009
  • Posted 18 Jun 2021 23:52
  • Reply by JonoG
  • Uruguay
Jonathan Gill
1984 A024D05289E
  • Posted 18 Jun 2021 22:53
  • Reply by Lenny75
  • Indiana, United States
CCC
Lenny,

How old is this unit, serial#? Since it will accelerate with hydraulics activated, suspect hydraulics are loading engine through the pump attachment. Once hydraulics are activated, load is relieved and engine runs fine. When engine starts do you here a strain on the hyd. pump? Once I have the serial number can assist further. Thanks.
  • Posted 18 Jun 2021 22:44
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.
I'm wondering about the transmission fluid, if it's the right viscosity, but I'm an electronics tech not a mechanic. Maybe someone could shed some light on this.
  • Posted 18 Jun 2021 00:17
  • Reply by JonoG
  • Uruguay
Jonathan Gill
Ok. I'll let you know if we find anything.
  • Posted 17 Jun 2021 21:59
  • Modified 17 Jun 2021 22:00 by poster
  • Reply by JonoG
  • Uruguay
Jonathan Gill
I have not...
  • Posted 17 Jun 2021 20:59
  • Reply by Lenny75
  • Indiana, United States
CCC
Hi, did you solve it ? We have a H4.0FTS that is doing the same
  • Posted 17 Jun 2021 07:31
  • Reply by JonoG
  • Uruguay
Jonathan Gill
Hi, did you solve it ? We have a H4.0FTS that is doing the same
  • Posted 17 Jun 2021 07:13
  • Reply by JonoG
  • Uruguay
Jonathan Gill

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