kshansen
Senior Member
- Joined
- Mar 11, 2012
- Messages
- 11,169
- Location
- Central New York, USA
- Occupation
- Retired Mechanic in Stone Quarry
On the electronics engines, best advice I ever received was "Don't forget it is still an engine with Mechanical Faults that will trigger electronic malfunctions" Just fixing electronics codes many times would not fix the fault as I witnessed mechanics throw high dollar parts at machines.
Not an electronic engine but a 988H that kept sounding the plugged trans. filter alarm.
After doing basic things like change filter and then the pressure switch, when that did not work I installed two pressure gauges to prove that there was no pressure drop across the filter, at least nowhere enough to set the alarm off. Cat dealer rep was convinced the problem was in the monitor panel on the dash and recommended replacing it. To make a long story somewhat shorter finally almost by accident found that a transmission temperature sensor was triggering the plugged filter alarm.
Never could get anyone at Cat to explain how that was happening. But I sure know the boss would not have been happy if I had taken the Cat rep's advice and bought a new monitor and the problem was still there!
So this was one time if you believed the computer, either the Cat ET one or the on-board ECM it would have cost hundreds of dollars with no cure!
What really sucked is no one in the company felt it was important information to be shared with other plant mechanics who also had 988H and there were I recall at least half a dozen just in our state all bought around the same time. Have to wonder if our's had this problem how many others also might experience it as well?