juan214
Full Access Members
After figuring out the trucks charging problem now I am looking at a number of scanner readings. I have had intermittent idle issues, and I feel what I think is a misfire at times. Once in a while while stopped and at idle it feels like the transmission downshifts and then I get a rough idle. While cruising I feel a vibration, I think it may be tires. I get crappy mileage just under 10 mpg according to onboard computer.
I figured I would fix a exhaust leak between the the Y-pipe and the left exhaust manifold first and eliminate that issue. I had new studs installed and was told the left upstream catalytic converter was clogged. Had that catalytic converter removed and left the downstream catalytic converter in place. The leak is now gone and runs somewhat better than . I'm thinking of doing the same on the right and just keeping the downstream catalytic converters.
I did replace the DPFE to cure a downstream hose failure.
Here is what I'm looking at, are these numbers high and one reads zero? I have no DTCs but have not been able to get IM Readiness to pass for weeks on EVAP and CAT.
At Idle and acceleration to 60 - 65 mph both SHRTFTB1S1 and SHRTFTB2S1 show fluctuating readings, SHRTFTB1S2 shows zero continuously, and SHRTFTB2S2 stays fixed at 99.2. These were this prior to exhaust repairs.
The LONGFTB1 and LONGFTB2 both read 0.00 and rarely change.
I figured I would fix a exhaust leak between the the Y-pipe and the left exhaust manifold first and eliminate that issue. I had new studs installed and was told the left upstream catalytic converter was clogged. Had that catalytic converter removed and left the downstream catalytic converter in place. The leak is now gone and runs somewhat better than . I'm thinking of doing the same on the right and just keeping the downstream catalytic converters.
I did replace the DPFE to cure a downstream hose failure.
Here is what I'm looking at, are these numbers high and one reads zero? I have no DTCs but have not been able to get IM Readiness to pass for weeks on EVAP and CAT.
At Idle and acceleration to 60 - 65 mph both SHRTFTB1S1 and SHRTFTB2S1 show fluctuating readings, SHRTFTB1S2 shows zero continuously, and SHRTFTB2S2 stays fixed at 99.2. These were this prior to exhaust repairs.
The LONGFTB1 and LONGFTB2 both read 0.00 and rarely change.
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