can vacuum leak and/or bad o2 sensor cause idle problems?
#1
can vacuum leak and/or bad o2 sensor cause idle problems?
hi,
so a vacuum leak or a bad o2 sensor or both...
can this cause idle issues.
my mustang sometimes does that when it's hot
I have code 91 which means bad o2 sensor on driver side. I'll change it next year when I change, header, xpipe and cat.
but can a bad o2 sensor screw up idle sometimes? it never happens initially but it happens when motor is hot.
thanks.
so a vacuum leak or a bad o2 sensor or both...
can this cause idle issues.
my mustang sometimes does that when it's hot
I have code 91 which means bad o2 sensor on driver side. I'll change it next year when I change, header, xpipe and cat.
but can a bad o2 sensor screw up idle sometimes? it never happens initially but it happens when motor is hot.
thanks.
#2
Yes and Yes, vacuum leaks and or bad o2 sensor can cause poor idle.
o2 sensor more so when engine reaches operating temperature and the ecm goes into closed loop. The o2 sensors don't come on line until they heat up a bit.
o2 sensor more so when engine reaches operating temperature and the ecm goes into closed loop. The o2 sensors don't come on line until they heat up a bit.
#3
hi,
so a vacuum leak or a bad o2 sensor or both...
can this cause idle issues.
my mustang sometimes does that when it's hot
I have code 91 which means bad o2 sensor on driver side. I'll change it next year when I change, header, xpipe and cat.
but can a bad o2 sensor screw up idle sometimes? it never happens initially but it happens when motor is hot.
thanks.
so a vacuum leak or a bad o2 sensor or both...
can this cause idle issues.
my mustang sometimes does that when it's hot
I have code 91 which means bad o2 sensor on driver side. I'll change it next year when I change, header, xpipe and cat.
but can a bad o2 sensor screw up idle sometimes? it never happens initially but it happens when motor is hot.
thanks.
#4
for the vacuum I was thinking of using the fog or smoke machine I got from ebay.
thank you for the information.
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KingRando
2005-2014 Mustangs
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10-02-2015 08:06 AM