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Thread: Check Codes
11-10-2009, 01:38 PM #1
- Join Date
- Nov 2009
- Spring Branch,Tx
Did a code scan today after I warm up the truck (1990 1500 4.3L V6 TBI),Got code 12, 33, and 42.
Code 33-map sensor signal out of range, high
Code 42-electronic spark timing (EST) circuit grounded
are these code related to each other? The truck is idling high had to retard the timing to lower it but now it loss power.
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