Logo
FULL SITE MENU

ECM Hours Exceptionally Low

N

Nautique 1981

New member
Aside from a newly replaced ECM, is there any other plausible reason the mechanic's hour meter read 28 hours when hooked up to the ECM when the sellers indicated the boat has 320 hours? The mechanic indicated it didn't seem the ECM had been replaced as it has the original dates on it.

This is for a ZR6 409 on a Nautique SAN 230.
 
Only other thing I can come up with is the ECM could have been repaired and had its non-volatile memory cleared and/or been reprogrammed...
 
Nautique 1981 said:
Aside from a newly replaced ECM, is there any other plausible reason the mechanic's hour meter read 28 hours when hooked up to the ECM when the sellers indicated the boat has 320 hours? The mechanic indicated it didn't seem the ECM had been replaced as it has the original dates on it.

This is for a ZR6 409 on a Nautique SAN 230.
Click to expand...
The ECM stores the actual run time, not KOEO (Key On, Engine Off) and if it was replaced, it won't show 320 hours because the piece with that info is no longer on the engine. The numbers could be due to the replaced ECM being made around the same time as the original and someone is trying to pull a fast one.

Why did the ECM need to be replaced on a boat with only 320 hours? The easiest way I have heard of to kill an ECM- connect the battery cables with the wrong polarity and turn the key to ON.
 
Back
Top