Rough idle
#1
Rough idle
Have a 2001 S40 with about 73K miles, I searched but could not find anything with these codes. I am having a rough idle when sitting at stop lights and the car is in drive. The rpms will drop, the car stutters for a moment and then it is ok.
Had 7 codes and replaced the MAF and MAP and now down to 3:
P139
P171
P172
The book says that with codes P171 and P172 together it could be MAF but I already replaced that. It goes on to say O2 sensor or vacum leak.
Just wanted to get some feedback before I replaced anything else.
Had 7 codes and replaced the MAF and MAP and now down to 3:
P139
P171
P172
The book says that with codes P171 and P172 together it could be MAF but I already replaced that. It goes on to say O2 sensor or vacum leak.
Just wanted to get some feedback before I replaced anything else.
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