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Just got an new to me '92 240 sedan and it's seems to be throwing some codes that won't stay cleared. They are as follows:
113 Lambda control. Engine running too rich/lean
232 Lambda control. Engine too lean or too rich at idle
144 (EZK) Load signal from ECU missing
Where do I start looking for areas that would throw these codes. The car has 200K on it and looks like the original CAT & O2 sensor. I plan on doing a full major service, but if anything else needs attention, I'll do it at that time.
Thanks.
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