Question about 1997 Mercury Villager
P0135 p0325 p0400 i change the o2 sensor on bank1 sensor1 but p0135 come back on about 5 min. even i reset the computer still the same and i do some reserch .some ppl say it's not knok sensor when this three code apper together.
now i don't know if i have to change knock or not cuz it's a big job
thanks for help
I have seen some people finding a short near the PCM, some have quoted as to fixing the short and the P0135 Code disappears.
PCM=Power-Train Control Module
The knock sensor will run you about $350, look for the short first, maybe a wire got pinched or something, may be cheaper then diving into the knock sensor if it is not that.
I have also seen people replacing the knock sensor as them code do appear at the same time.
Posted on Sep 07, 2009
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Posted on Jan 02, 2017
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