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| I have problems with two of them. One gives error code 452 (lo voltage rail position sensor pin 14). Runs good most of the time but will lose power ocassionally and drop in rpm but will start running at full rpm before it stalls. It will stall about every 10 times and have to be restarted.
The other on has error code 525 (ecm not calibrated or failed). This one would run and pull fine. But running at 1500 rpm under no load would drop to 800 rpm for a few seconds and then return to 1500. (like someone turn the key off for 2 seconds). The other day it stop conpletely when I was driving it under load . It would not start or would run for 30 sec and stop. The next day it acted similar did run after a few tries it ran. The rpm would vary between 1200 and 1700 with the throttle set at 1500. When I put it in gear and let out the clutch the motor would stall sometimes. other times it would drop in rpm more than normal but come but to run at a constant 1500 rpm. | |
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converting JD 8970 to mechanical from electronic fuel system
