1996 Chevy Caprice o 2 sensor

1996 CHEVROLET CAPRICE
119,200 MILES • V8 • 2WD • AUTOMATIC
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STREETTEAM
  • MEMBER
  • 1 POST
the guys that rebluid my transmission told me afther a day or so that they broke one of my o 2 sensors but did not replace it and left it in there.so i been driving with that problem with out knowing. it was missing power and idlering crazy and black smoke out the pipes.so i toke it back and they replace it but the problem came back so me thinking that one effected the other 3 sensors so i replace them all and also spark plugs,sparks plugs wires,cap and rotor but still the same problem what could be the problem.
Apr 2, 2009 at 1:46 AM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Hello, did the trans shop use a scanner, so they could see live engine data, check for codes? Some of the national brand autostores will check codes for free.

On different makes and models, I've seen the map sensor loose vacuum, cause all kinds of issues, just a thought.
Apr 2, 2009 at 7:13 AM
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