[Slvr7]

What effect would a valve not closing all the way have on fuel trims? Looking at the freeze data, what was the coolant temp, map reading, and rpm when the code was set?

 

[Slvr7]

From what I've read, it would be a problem.

It is, I am asking what do you believe raw fuel leaking past a valve would show on your trims?
That data was at 730rpm?

 

[Slvr7]

Not saying it is a valve, but negative trim is the result.
If your map is indicating 9 inches of vac at idle, that's very low. It should be between 15-19 generally, this is where I would start. Your b2 trims indicates a total of 16.4% fuel is being removed from b2. Focus on vac leaks there, live graph your b2 a/f sensor and start spraying your intake,hoses, injector seals. You'll see it in the graph if spray across the leak.

 

[Slvr7]

Quick question,was your map data in volts as in .90v or was it inches of vac?

 

[Slvr7]

Ok, just wanted to make sure I wasn't sending you down the wrong path.

 

[Slvr7]

Time for some berryman chemtool b12

Really think his brand new Honda injectors are getting plugged after a few miles?

 

[Slvr7]

Have a manual vac gauge? What does your scanner show for map voltage at hot idle, maybe your scanner isn't reporting psi correctly.

 

[Slvr7]

Fuel pump would effect trims on both banks. Things that are the usual causes of 1 bank trims being off
A. Cam timing off
B. Vac leak
C egr ports plugged and egr not closing all the way
D. A/f sensor biased
E. Cat being plugged/restricted
F. Valve on the bank out of adjustment
G injector(s)
H. Have seen cracked air intake tube on a maf veh effect only 1 bank.
Map v would be helpful information

 

[Slvr7]

Long take approx 20 minutes of consistent short calling for a change before it moves. 0 trim is what the veh was originally programmed for, ANY change is motor health/volumetric efficiency/sensor deviation/fuel formulation will change the trims. +/- 10 is very normal and isn't an issue. Your trims are always on the move, your going to go nuts trying to achieve zero.

 

[Slvr7]

So many variables that go into trims, quick check see if your a/f sensors are contaminated or biased, switch the front to rear and see if the trims say the same or follow the sensors.