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Hesitating/Missing while driving along, check engine light on, possible O2 sensor...? 850 1996

posted by  roger on  Fri Apr 23 09:44 CST 2010
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last visit: Fri Sep 12 22:18 CST 2014
[RELATED]

I concur with the other posters - much more likely to be a vacuum leak.

Some data points for comparison:
- I seem to get ~100k to ~125k miles from O2 sensors.

- There are a number of little rubber vacuum "elbows" that can leak. I think there are 7 of them all together on my car. Some are easy to reach (on the vacuum tree by the throttle body), and some are a real pain (vacuum input to fuel pressure regulator). With heat and time, they get soft, and can develop little holes, which will cause the symptoms you describe. They are available for $2 to $3 each from the usual internet parts places; might be good to just replace them all. (I do them when I have to take them out for other reasons...)

Roger

'95 854T 220k miles
'87 245 M47 280k miles






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New Hesitating/Missing while driving along, check engine light on, possible O2 sensor...? [850][1996]
posted by  Cealdi  on Thu Apr 22 13:33 CST 2010 >


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