flashing cel means you need a tune up real bad, or the cats clogged up causing the misfires. next time it does it, scan for codes engine running, dont turn it off or the pending code will clear on you.
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12-04-2019
flashing cel means you need a tune up real bad, or the cats clogged up causing the misfires. next time it does it, scan for codes engine running, dont turn it off or the pending code will clear on you.
12-09-2019
OK. I drove the car some more at highway speeds and did get two pending codes after the CEL flashed once or twice .....
P0137 [ O2 Sensor circuit low voltage B1S2 ]
and P0303 [ Cylinder 3 misfire ].
Then I shut the car off, let it cool down a bit, then drove it again at highway speeds and the CEL came on and stayed on. Pulled P0303 code at that point,
with none pending.
Engine appears to run fine. Plugs and wires were changed when I did the LIM and UIM gaskets back in March timeframe. Also put new o-rings on all
the fuel injectors then.
I did have a P0420 [ Cat Sys Eff below threshold - Bank 1 ] set the CEL several months ago. But I cleared it and it has not come back.
I have never seen P0137 or P0303 before this.
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