Checked Timing and was still perfect at 3*btdc with the port jumped at operating temp and in neutral..confirmed by the scan guage as well. Added 4-bottles of red heet to a full and fresh tank of 85. New spark plugs, front cat, front O2 sensor, air filter. Reset the ecu and drove around 170miles all week to get ready status.
Went for the recheck Saturday morning. Failed, but barely. CO was 15.6, so I definitely made some headway in reducing the CO from 17 on the previous test. I figured since I wouldnt be able to get parts or retest within the 10day time period that id try cleaning the MAF. So I went back around noon..Now failed 2 gases. but IAT was around 130* I suppose that would make sense why the HC's went up to a failing level and nox reduced.
It wasnt all negative though, my gas cap passed both tests. The same one that was 'previously failing'.
Now I'm replacing the second cat, rear O2 sensor(I held off on swapping it out because I was worried about breaking off the studs and having to drop the slee belly skid), vacuum lines, and intake pipe. I'm also considering testing the FPR even though I feel like its fine.
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