Mechanics

QUESTION

1991 Isuzu Rodeo

Electrical problem
1991 Isuzu Rodeo Question 6 cyl Two Wheel Drive Manual

I have a code 12 from the ecm, no tach signal to ecm and a code 42, electronic spark timing. Can you help me to find out what I need to change to repair this problem.
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Lambertp
April 29, 2008.




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