crolfe1984
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- Baltimore, MD
So I'm starting this thread to keep track of my findings and advice/solutions to the problem below:
My 1990 BMY M923A2, about a month ago, started acting oddly when being driven up a steep hill. I would notice a slight drop in RPMs and a definite change in the exhaust note. It sounded more muffled and a lot lower in tone. Didn't think much at first, but the problem has been getting worse. Its to the point that while driving today on flat ground the RPMs suddenly dropped from 2000 to 1000 with no response from the throttle. While I didn't totally lose power I was going no more than 15 MPH. This would last about 30 seconds or so and the truck would slowly gain engine speed. The exhaust note once again is very low and muffled. This issue is absolutely most obvious while driving uphill.
The past 900 or so miles have been trouble free, the gauges all read correctly (including oil pressure), the truck has fresh diesel in it, idles fine, and shifting from the transmission is on point. Aside from a small exhaust leak at the bottom of the muffler I can't trace any readily apparent issues.
My tool selection is somewhat limited and I don't have the space for huge projects (engine swaps etc.), but this summer I'll have time to work on it and funds for spare parts as needed. Any ideas or insight from people with turbo 5-ton trucks that have lost power while on the move?
My 1990 BMY M923A2, about a month ago, started acting oddly when being driven up a steep hill. I would notice a slight drop in RPMs and a definite change in the exhaust note. It sounded more muffled and a lot lower in tone. Didn't think much at first, but the problem has been getting worse. Its to the point that while driving today on flat ground the RPMs suddenly dropped from 2000 to 1000 with no response from the throttle. While I didn't totally lose power I was going no more than 15 MPH. This would last about 30 seconds or so and the truck would slowly gain engine speed. The exhaust note once again is very low and muffled. This issue is absolutely most obvious while driving uphill.
The past 900 or so miles have been trouble free, the gauges all read correctly (including oil pressure), the truck has fresh diesel in it, idles fine, and shifting from the transmission is on point. Aside from a small exhaust leak at the bottom of the muffler I can't trace any readily apparent issues.
My tool selection is somewhat limited and I don't have the space for huge projects (engine swaps etc.), but this summer I'll have time to work on it and funds for spare parts as needed. Any ideas or insight from people with turbo 5-ton trucks that have lost power while on the move?