Timing and trouble codes
intimidatordei
08-07-2005, 12:52 PM
I have a 1994 S-10 with a 4.3 CMFI engine. I am looking for help with two problems.
1. I am trying to check my ignition timing but I am having trouble locating the tan with black stripe wire that must be disconnected in order to check the timing. If anyone can help me locate this wire, I would be greatly thankful.
2. This has to do with trouble code 45 oxygen sensor or circuit - rich exhaust detected. My "service engine soon" light comes on only when I drive on the highway at 65 - 70 mph for several miles. As I slow down to 45 mph the light goes off. Trouble code 45 comes up when I check the trouble codes. Does anyone know what would be causing this to happen?
The only mods to the engine are a high flow cat and muffler system.
Thanks for any help anyone can provide.
1. I am trying to check my ignition timing but I am having trouble locating the tan with black stripe wire that must be disconnected in order to check the timing. If anyone can help me locate this wire, I would be greatly thankful.
2. This has to do with trouble code 45 oxygen sensor or circuit - rich exhaust detected. My "service engine soon" light comes on only when I drive on the highway at 65 - 70 mph for several miles. As I slow down to 45 mph the light goes off. Trouble code 45 comes up when I check the trouble codes. Does anyone know what would be causing this to happen?
The only mods to the engine are a high flow cat and muffler system.
Thanks for any help anyone can provide.
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