2000 Cadillac Catera misfiring in 1,3, and 5

2000 CADILLAC CATERA
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BENGLAVIC
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Engine Performance problem
2000 Cadillac Catera 6 cyl Two Wheel Drive Automatic

My serpintine belt just broke and i had it replaced but the mechanic was an idiot and said it was running rough. All he told me was the was misfiring in 1, 3 and 5. What is the problem
Sep 21, 2009 at 8:23 PM
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RASMATAZ
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Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Sep 22, 2009 at 3:10 AM
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FACTORYJACK
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Are we talking serpentine belt or timing belt?. A broken serpentine belt would not relate to a misfire, but a timing belt would if valves are bent.
Sep 22, 2009 at 11:10 PM
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