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Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4291
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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My New Holland LS190- Skid steer Will Crank and run as as I

Customer Question

My New Holland LS190-B Skid steer Will Crank and run as long as I want to. If I unhook the seatbelt, get out of seat or turn off key, it dies and won't start bac until engine is entirely cold. Then it will start again and run all day as long as you don't turn it off or get out. So far I have replaced the EIC, Main Solenoid, Fuel relay, Diode, Fuel shutoff solenoid. I also have the fuel solenoid straight wired from the switch because it does not get power.
JA: Thanks. Can you give me any more details about your issue?
Customer: What kind of details?
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Submitted: 7 months ago.
Category: Construction and Road Equipment
Expert:  Dan replied 7 months ago.

Hi my name is***** will be glad to help. What is your machine serial number?

Customer: replied 7 months ago.
I will get it shortly
Customer: replied 7 months ago.
Customer: replied 7 months ago.
Here are some pics
Expert:  Dan replied 7 months ago.

Thanks for the info Shane. So this only occurs after the safety interlock switches are disengaged? That is odd that it seems to be temp related before allowing starting again.... The ECU has been replaced and reflashed??

Click on this link for the troubleshooting information to help with this.


Customer: replied 7 months ago.
Brand new ecu. Fuel solenoid seems to be connected to temp sensor and hydraulic pressure sensor
Customer: replied 7 months ago.
Sorry for the delays in answering. I am changing out a busted hydraulic hose too
Expert:  Dan replied 7 months ago.

Is the fuel solenoid hooked back up factory now and this is occurring or is it still bypassed with this problem? If hooked up factory what are you getting for symptoms? any errors or fault indicators?

Customer: replied 7 months ago.
Fuel Solenoid is still jumpered from the switch. There is no power to solenoid without jumper.
Customer: replied 7 months ago.
No errors or indicators on ecu. All fuses good.
Expert:  Dan replied 7 months ago.

Thanks for the update.


If either the engine oil pressure,or hydrostatic charge

pressure fall below certain limits, the EIC will remove

power from the fuel solenoid after 30 seconds,

stopping the engine.

If this condition occurs, turn off the ignition key.

Before unbuckling the seat belt, turn the ignition key

to the “ON” position and lower the boom and

attachment to the ground or rest the boom on the

boom lock pins. Turn the ignition key to the “OFF”


The operator may immediately restart the engine

again. Should the function remain faulted, power will

again be removed from the fuel solenoid in another

30 seconds and the engine will again stop.During the

30-second alarm period, the “ENGINE STOP”

symbol will flash. If this condition continues, locate

the fault and repair.


Use caution when restarting the

loader because of the possibility of NO

LUBRICATING OILS for the engine and/or the

hydrostatic transmission. DO NOT restart the loader

more than once or operate the engine at high

speeds. Damage to the engine and/or transmissions

may occur. Contact your New Holland dealer for


Expert:  Dan replied 7 months ago.

If an alarm is caused by 3, 4, or 7, the CHARACTER

DISPLAY will change to show the numeric value of

the function that caused the alarm

Expert:  Dan replied 7 months ago.

See PDF 683-686 in the manual I posted..... Scroll through with that procedure to see if any faults are found and also check the temps through the display as shown in the manual..... Possible a faulty temp sensor or oil pressure sensor, Pressure sensor, or harness problem causing false readings.

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