^^^ Now THAT is the way to help a friend! ^^^

You gonna make the Fall Dragon, Barry?

 

Going to try. I was so disappointed I didn't make last time cause intercooler went out. I am in the middle of a career change and don't know where I am going to relocate. Its up to UPS. I find out Monday it might be Florida.

 

P2098 Bank 2 Post Catalyst Fuel Trim System Too Lean DTC good reading here.
The causes for this DTC may include: Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors. Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7. A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture. A large air leak at or near the number one oxygen sensor would also cause a lean mixture. A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter. A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area. The Mass Airflow sensor will also cause this problem. It would be accompanied by a code such as P0100 -- Mass Airflow circuit malfunction. The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture. Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks. To make a point as to the cause and effect on vehicles, consider this scenario. A simple air leak forward of the number one oxygen sensor will add additional air to the mixture un-metered by the computer. The oxygen sensor signals a lean mixture due to the un-metered air. Immediately the computer enriches the mixture to prevent a lean mixture from causing damage due to detonation among other factors. The unnecessarily rich mixture begins to foul the plugs, contaminate the oil, heats up the converter and drops the fuel economy. These are only a few of the things that transpire under these circumstances.

Read more at: P2098 Bank 2 Post Catalyst Fuel Trim System Too Lean DTC

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On my truck I found out it was the rubber o rings on the runners on the intake manifold was sucking air. Took for ever to find this fault it will drive you nuts. One thing to do when it is idling is to spray starter fluid around different areas to see if the motor speeds up then you have narrowed the leak down.

 

I feel your pain , like I said I had the light for over two years, as long as the car running fine , i:m still thinking it air leak somewhere , all I can tell you is recheck and recheck can not be much because the car running fine

 

Did a lot of checking and troubleshooting yesterday nothing we did would satisfy the rear 02 sensors till we spoon fed it fuel with the engine running thru the large vacuum line that connects to the pass side valve cover. It loved it and the rear O2 sensors immediately showed the correct voltage on the Actron scanner. It didn't take much spoon feeding to get it in spec so we went after the injectors. My friend said that the PCM only knows that the injectors are supplying fuel but does not know how much.

Removed the fuel rail, filled it with top engine cleaner and let soak. Loaded the rail with 60 psi air pressure on the workbench. Powered each injector on the workbench with 12v and watched spray patterns and volume of fuel spraying. They were pretty ugly with erratic spray patterns and varied amounts of volume. Did this a couple times and all sprays were identical with identical volumes of top engine cleaner spraying out. Looked very good on the bench after this. Did around 10 trips with around 15 starts and over 80 miles of driving. No CEL, monitored voltage on all four O2 sensors with the Actron scanner and all are in spec and stayed there while driving. "appears" to be a happy camper again. Seems that it was starving for fuel.
I'm pretty confident this was the issue, don't know why the injectors would have been that cruddy. I run nothing but Shell premium.
I do believe this cured it but also think that a bottle of in the tank injector cleaner wouldn't have cleaned the injectors anywhere near the deluxe cleaning and actuating that I gave it on the workbench. I had already run a bottle thru it a few weeks ago anyway before the CEL came on. I don't think the fuel tank is contaminated, had already changed the filter and cut the old filter apart looked good inside. Just accumulated crud after 72K miles of service I guess. I will replace the battery next week.
Thanks for all the advice guys this forum is great!!!

 

Barry thank you very much for your gracious offer. I think she's good to go now and will replace the battery this week, maybe today.
Thanks again,
Mark

 

Post #13.
Dang, I was right for a change !

 

Glad all is well , I run Lucas through mine about every other fill up , Good work

 

Glad you got it worked out... I've honestly always been a bit wary any cleaners you pour right into the gas tank, your experience certainly doesn't restore my faith