High cold idle - codes 12 & 21
02-23-2008, 07:44 AM
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High cold idle - codes 12 & 21
Hey all, I'm having some interesting codes pop up...
1990 Pickup, 22r-e 5-speed 4WD.
I think I'm reading it correctly as 12 and 21, basically it's like this: 1 flash, short pause, 2 flashes, longer pause, 2 flashes, short pause, 1 flash, really long pause, repeat.
Check engine light came on while driving down the road @55.
I'm also getting a little pinging under load.
Ideas?
1990 Pickup, 22r-e 5-speed 4WD.
I think I'm reading it correctly as 12 and 21, basically it's like this: 1 flash, short pause, 2 flashes, longer pause, 2 flashes, short pause, 1 flash, really long pause, repeat.
Check engine light came on while driving down the road @55.
I'm also getting a little pinging under load.
Ideas?
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