Bmbush
New member
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- Location
- Lansing, NC
Good evening,
I have a 94 M1089 we recently bought and are bringing back to life. Please I know there is a post on this code already but let me explain our situation and maybe someone can help me out cause we are not driving anywhere fast at the moment. This truck is 25 years old and only had 1200 miles on it when we bought it.
Not uncommon I know but she's all original no mvo's.
Two weeks ago I went out for a trip to the parts store and we lost our injector cups in the head. In the course of turning around and getting home roughly 5 miles I lost about 50 gallons of diesel out of the coolant overflow tank. I got the truck in front of the shop and shut down. I started it again to position in front of the shop and lost response of the transmission pad. At the moment I didn't care, I moved to address the major issue. Head came off got new cups and everything else addressed in regards to the top end of the motor. It's back together now, running great with no issue. I put the truck in drive, start to move, once I'm moving the left number on the touchpad disappears and I'm stuck in second gear. Code on the transmission is 2511. The first code we got was for the proximity sensor on the top of the bellhousing. We pulled that out and replaced it yesterday. It was destroyed and to our pleasant surprise the tach started working. But same issue remains, stuck in second gear and we have no speedometer which has worked previously. Also noticed at this point we have no reserve light. No power to the light, light worked before this issue. It is working when power is applied separate of the system, and the fuse is good.
Today I pulled the output speed sensor in regards to our current and only code 2511. Ohms checked at 289 out of the truck which should be acceptable from what we've read. Trucks back together and we still have the issue.
I've forgot to mention we started with the ECU. I was in the dash previously and though it might be a ground issue or something I did. I pulled the entire controller apart and to our not so much of a surprise it was full of water. Cleaned and inspected everything, nothing was obviously damaged and it's worked for our 500+ miles of driving, so I reassembled and reinstalled. It's working fine like before.
I know reading this the obvious thing to jump to is the water in the ECU. I must mention we have gone thru this truck top to bottom and done alot of work. Money is tight now and while if replacing the ECU fixes the issues that's great but I can't throw away money to just start replacing stuff that isn't the issue. I'm looking for suggestions on sensors or testing the ECU or whatever anyone who has experience in this situation could suggest.
Sorry for the long post just trying to give the back story. Any help would be greatly appreciated.
Thanks
I have a 94 M1089 we recently bought and are bringing back to life. Please I know there is a post on this code already but let me explain our situation and maybe someone can help me out cause we are not driving anywhere fast at the moment. This truck is 25 years old and only had 1200 miles on it when we bought it.
Not uncommon I know but she's all original no mvo's.
Two weeks ago I went out for a trip to the parts store and we lost our injector cups in the head. In the course of turning around and getting home roughly 5 miles I lost about 50 gallons of diesel out of the coolant overflow tank. I got the truck in front of the shop and shut down. I started it again to position in front of the shop and lost response of the transmission pad. At the moment I didn't care, I moved to address the major issue. Head came off got new cups and everything else addressed in regards to the top end of the motor. It's back together now, running great with no issue. I put the truck in drive, start to move, once I'm moving the left number on the touchpad disappears and I'm stuck in second gear. Code on the transmission is 2511. The first code we got was for the proximity sensor on the top of the bellhousing. We pulled that out and replaced it yesterday. It was destroyed and to our pleasant surprise the tach started working. But same issue remains, stuck in second gear and we have no speedometer which has worked previously. Also noticed at this point we have no reserve light. No power to the light, light worked before this issue. It is working when power is applied separate of the system, and the fuse is good.
Today I pulled the output speed sensor in regards to our current and only code 2511. Ohms checked at 289 out of the truck which should be acceptable from what we've read. Trucks back together and we still have the issue.
I've forgot to mention we started with the ECU. I was in the dash previously and though it might be a ground issue or something I did. I pulled the entire controller apart and to our not so much of a surprise it was full of water. Cleaned and inspected everything, nothing was obviously damaged and it's worked for our 500+ miles of driving, so I reassembled and reinstalled. It's working fine like before.
I know reading this the obvious thing to jump to is the water in the ECU. I must mention we have gone thru this truck top to bottom and done alot of work. Money is tight now and while if replacing the ECU fixes the issues that's great but I can't throw away money to just start replacing stuff that isn't the issue. I'm looking for suggestions on sensors or testing the ECU or whatever anyone who has experience in this situation could suggest.
Sorry for the long post just trying to give the back story. Any help would be greatly appreciated.
Thanks
