Just started a new job. Loader is very nice with 7100 hours Runs great, but dies intermittently throughout day. It can be at idle, and mostly happens while you are in transit bringing you to a VERY abrupt stop, which is the most aggravating part. Employees say the shop has looked at it several times as well as Volvo and can't figure it out because its an intermittent problem so I'm told. No rhyme or reason as to when it happens. Does it when operated with the gear shift lever or the console toggle. ALWAYS RESTARTS IMMEDIATELY AFTER YOU PUT IT BACK IN NEUTRAL, RESET IGNITION SWITCH AND CRANK. ANY IDEAS OUT THERE?????
Also was told by the previous operator that some days it's fine. My first two days it has been acting up.
Had a deere 450c trackloader that would do that. The fuel shutoff solenoid had a loose contact, just the right angle or bump and it would die. I would start with disconnecting or replacing the shut off solenoid. Does it happen only after the machine has warmed up, solenoids don't really like heat, and as they weaken, they often fail when warm, only to work again when cooled off. If its not the solenoid, check the key switch, then any safety shutdown sensors the machine may have, but i'll bet due to hrs / age that its the fuel shutoff solenoid. If it were fuel delivery problems its unlikely that it would immediately restart.
Hi There, what model of L90 is it,..c,d,e,f etc, it will help find a problem? Aiden
Just had similar symptoms on L70E...fuel pump is crank driven. This one had a wobbly feel to the pulley.
I have had same problem with volvo loaders . it was to many keys on the key ring making it just heavy enough barely cut switch off just enough to kill engine but not kill power (the way the ring hole is offset in key head and run position @ approx.2:00 ) try using bare single key. I cut the large plastic off of mine and drill a hole in metal shank. hope this helps
Alright, thought it was the clearly failed fuel pump on my L70E...that fixed the fuel prime loss issue. It would still stall several times a day. Turns out that steel shavings from the pump failure had collected on the apparently magnetic crank position sensor. Removed the shavings and the stalling went away.