I checked the BLM's and the cell 16 stays at 127-128, cell 17 stays right at 116 (i assume this is bad) & cell 18 stays at 123-124. I am curious if these are out of specs & what to do to fix them.

 

Cells 17 and 18 appear to be mathematically derived from the other Cells. As best I can tell, Cell 17 is used primarily for deceleration. I wouldn't worry about them.

You need to get the values for as many of the closed loop Cells (01-15) as you can. A few of them may be driving the mathematic cells.

 

I don't worry about cell 17, since it is normally used when you decelerate, like Injuneer said. Normally, if your other partial throttle cells have long term BLM's close to 128, then cell 17 falls somewhat in line too.

Dan

 

I ran the car today and got reading for cell 1-15 and they varied from 109-123 for each one. None where close to the cells 16-18 that are are much higher on average like 119-128.

 

i hear a lot about cell 16. someone care to elaborate where this cell is?

 

Cell 16 is the idle cell. Doesn't tell much and 17 and 18 are for a cold start up on high and low loads.

 

17 and 18 are also used under various circumstances when the engine is fully warmed up.