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Code 231 & 121 then 221 & 231 ??? 700 1989

I had code 231 & 121 showing up on my Brick. The car idles rough and I changed the AMM. After the change I cleared the codes and the car continued idleing rough with the check engine light/lambda sond. Now I have code 221 & 231 showing up, any body have a clue whats going on ??? I changed back to the used AMM and cleared the codes and after a while code 221 & 231 shows up. I guess that the old AMM still is ok, could it be vacum leaks ??? The car idles rough.

Thanks in advance for all the help.

89 740 GL 255 000 Km
90 240 GL 163 000 Km
78 242 L 350 000 Km






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New Code 231 & 121 then 221 & 231 ??? [700][1989]
posted by  mc-gyver  on Mon Nov 18 19:18 CST 2002 >


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