Discussion:
blowing fuse #4

lift starts up and will run for a very short time ( 2 minutes) and then blow the start up fuse. This is an ac drive truck. Rewired the ignition harness, searched all over for a short and found none.
Replaced fuse this yesterday, ran lift for 20 minutes all was good,operator got on it and fuse blew ????

at the end of the rope... HELP
  • Posted 14 Sep 2012 22:10
  • By warehouser
  • joined 14 Sep'12 - 1 message
  • New York, United States
Showing items 1 - 4 of 4 results.
if you want to risk burning up the wire harness then by all means throw a larger fuse in it. (of course i'm not being serious so dont try this)

But....
If you want to find the problem with no risk to damaging the truck further then the correct course of action would be to backprobe the system starting at the fuse and locate the shorted wire or component. Performing an OHM check sometimes is not enough, you might have to do a resistance check on the circuits in question instead which requires more time but can be more effective in locating your problem. This may also require using the wiggle test, moving the wiring around with leads connected to try and duplicate the shorted condition.
A wiring diagram would be extremely helpful to keep you from doing any unnecessary probing in areas unrelated.
From the sounds of it this problem may be wiring related since it only does it while its running, a chaffed wire moving around rubbing on the truck somewhere can wreak havok on troubleshooting effectively and will drive you nuts till you find it.

Good luck
  • Posted 27 Sep 2012 21:14
  • Modified 27 Sep 2012 21:16 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
is this a control fuse that is blowing probably 10-15 amp agc fuse if you are at the last resort stage put a larger rated fuse say a 30 amp drive it till you see the majic smoke show where the short is.now be advised you can create more damage if the short is in the wiring ,if it is a component the short should stay isolated to that component good luck.
  • Posted 27 Sep 2012 14:12
  • By toyrayown
  • joined 25 Sep'12 - 5 messages
  • Texas, United States
check unused connector at master controller area for battery acid causing short circuit
  • Posted 27 Sep 2012 02:16
  • By Autodog
  • joined 27 Sep'12 - 12 messages
  • Ontario, Canada
transposing nr for hyster please
  • Posted 16 Sep 2012 17:15
  • By AAPEE
  • joined 28 Aug'12 - 76 messages
  • Brussels, Belgium

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Movers & Shakers
David Wells David Wells
Chief executive, Logistics UK
National business development manager, Roadpod
Senior vice president, PEAC Solutions
Board director, UKMHA
Global Industry News
edition #1242 - 7 August 2025
In this week’s Forkliftaction News , we take a closer look at the main theme coming out of the recent CeMAT Australia event in Sydney: automation; why some are holding back and why not everyone will automate... Continue reading
Elwell-Parker ESI500-36
Coraopolis, Pennsylvania, United States
Used - Sale & Hire
Nagano NUZ090D
Yokohama, Japan
Used - Sale
Movers & Shakers
David Wells David Wells
Chief executive, Logistics UK
National business development manager, Roadpod
Senior vice president, PEAC Solutions
Board director, UKMHA
Elwell-Parker ESI500-36
Coraopolis, Pennsylvania, United States
Used - Sale & Hire
Nagano NUZ090D
Yokohama, Japan
Used - Sale

PREMIUM business

Lift Tek Elecar
Global leader in the design and manufacture of masts, carriages, integral sideshifters & fork positioners.
Latest job alerts …
Sioux Falls, SD, United States
Atlanta Savannah Orlando Tampa Jacksonville West Palm, United States
Erie, PA, United States
Movers & Shakers
David Wells David Wells
Chief executive, Logistics UK
National business development manager, Roadpod
Senior vice president, PEAC Solutions
Board director, UKMHA