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would o2 sensor cause misfires, part throttle hestiation, low vac reading, cold start misfires ?

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would o2 sensor cause misfires, part throttle hestiation, low vac reading, cold start misfires ?

 
Old 09-11-2006, 10:53 AM
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Default would o2 sensor cause misfires, part throttle hestiation, low vac reading, cold start misfires ?

that is what my mechanic said..
5 codes:
b1 s1 o2 sensor no activity
b1 s1 o2 sensor internal resisitance to high
cyl random multiple misfire
cyl 1 misfire
cyl 3 misfire
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Old 09-11-2006, 11:09 AM
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Would? I dunno. Could? Certainly.
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Old 09-11-2006, 11:14 AM
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could be o2 AND vac leak.
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Old 09-11-2006, 12:06 PM
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where do u think vac leak is ?? i pressure tested and heard hissing from rear right engine..
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Old 09-11-2006, 01:24 PM
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Default vac leak could a bunch of things, busted check valve, cracked hose, etc. etc.

take it to a mechanic if you can't find it yourself.
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