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Re: 93 S10 Blazer won't run, please help!
I would check the EGR valve for being stuck open.
Also check the pickup coil inside the distributor if it looks yellow and is coming apart or the magnet on your dist. shaft is cracked, this could cause your problem.
Low,weak coil output will cause this also.
The code 33 may be set because of the way the engine is running and not a faulty sensor.
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