rough idle
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New User
Joined: Aug 2005
Posts: 11
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rough idle
im been having this problem for the last couple of weeks. i used my scantool and came up with p0401 and p0171. im wondering if these are related and what else i can do since i have replaced my fuel filter, iac, dpfe and egr while taking my throttle body apart and cleaning it thoroughly. the truck runs great, acceleration is wonderful and smooth, but my gas mileage is going downhill and obviously the idle is rough when in drive but not in park. any suggestions would be great.
99 f150 4x4
5.4
k&n
69k
99 f150 4x4
5.4
k&n
69k
Thread Starter
|
New User
Joined: Aug 2005
Posts: 11
Likes: 0
thx for the response. i checked my MAF and its as clean as the day it was made. PCV looks good all the way back and has vacuum. im at the end of my rope and am probably going to take it in to a garage as much as i hate the thought. btw, luv this site and all the forums. i read way more than i post and have really learned alot.
