So having some issues with my Vera ( 1999 2.5 986)
Pulled the management light on the other day and code read 02 sensor in front of Cat bank 4-6
So I have now replaced Both 02 sensors and in recent weeks have replaced MAF , coil packs and plugs.
Vera is still unhappy
Now what I did managed to do the other day was get some live data readings , So wondering if any experts could cast an eye and see if they could suggest next line of attack. I am thinking disconnect battery to reset values and check for Vacuum leaks and fuel pump pressure.
So here are the Values after a good 20 min drive and all up to working temp.
Fuel System 1 status - Flicking between CL /OL Drive
Fuel System 2 status - Flicking between CL /OL Drive
Calculated Load value - 1.2%
Engine Coolant - 94oc
Short term fuel trim (b2-s1) -0.8%
Oxygen sensor output voltage (b2-s2) 0.435v
Short term fuel trim (b2-s2) 99.2%
Short term fuel trim (b1-s1) 0.0%
Oxygen sensor output voltage (b1-s2) 0.435v
Short term fuel trim (b1-s2) 99.2%
Oxygen sensor output voltage (b2-s1) 0.760v
Air flow rate from mass air flow 3.40 g/s
Absolute throttle position 0.05
Commanded secondary air status off
Oxygen sensor output voltage (b1-s1) 0.015v
Engine speed 957rpm
ignition timing for #1 4.0
intake temp 41oc
Short term fuel trim B1 0.0%
Long term fuel trim B1 4.7%
Short term fuel trim B2 -0.8%
Short term fuel trim B2 8.6%
Any thoughts would be amazing?
Many thanks
David
Pulled the management light on the other day and code read 02 sensor in front of Cat bank 4-6
So I have now replaced Both 02 sensors and in recent weeks have replaced MAF , coil packs and plugs.
Vera is still unhappy
Now what I did managed to do the other day was get some live data readings , So wondering if any experts could cast an eye and see if they could suggest next line of attack. I am thinking disconnect battery to reset values and check for Vacuum leaks and fuel pump pressure.
So here are the Values after a good 20 min drive and all up to working temp.
Fuel System 1 status - Flicking between CL /OL Drive
Fuel System 2 status - Flicking between CL /OL Drive
Calculated Load value - 1.2%
Engine Coolant - 94oc
Short term fuel trim (b2-s1) -0.8%
Oxygen sensor output voltage (b2-s2) 0.435v
Short term fuel trim (b2-s2) 99.2%
Short term fuel trim (b1-s1) 0.0%
Oxygen sensor output voltage (b1-s2) 0.435v
Short term fuel trim (b1-s2) 99.2%
Oxygen sensor output voltage (b2-s1) 0.760v
Air flow rate from mass air flow 3.40 g/s
Absolute throttle position 0.05
Commanded secondary air status off
Oxygen sensor output voltage (b1-s1) 0.015v
Engine speed 957rpm
ignition timing for #1 4.0
intake temp 41oc
Short term fuel trim B1 0.0%
Long term fuel trim B1 4.7%
Short term fuel trim B2 -0.8%
Short term fuel trim B2 8.6%
Any thoughts would be amazing?
Many thanks
David