Hi guys long time since I posted.
History. Had p0171 intermittent issues for over a year now never bothered to fix it have to pass emissions this month so am forced to fix it.
Symptoms. No code will show at first but will be pending with a hike in rpm at idle 900 or so. Clear code rpm drops. O2 bank 1 s. 1 voltage fluctuates as normal b1s2 v pretty much steady.
Intake pressure 21 at idle
Can't find a vacume leak anywhere the cap on intake manifold was off replaced went away for a little longer came back
Have tightened manifold bolts gasket replaced last year.
So only other thing wrong is sais pump failed no longer runs. And the hose not sure which one won't connect on the pump side. My ecu is at pcmofnc getting tuned right now and getting sais tuned out.
Assumption/question. Can air somehow be getting in through sais system causing it to show lean? Should I just remove valve and cap it off. And how would I cap hose on intake hose. Or should I still be hunting a vacume leak or fuel delivery issue. Pressure is good regulator is new along with filter
Any help would be great I have torque app so if need any reading I'll be happy to post
At the point if you help me fix it ill find a way to give a small donation as I'm not rich. Ie. Why I'm not going to a dealer or mechanic
Thanks all have a good day
History. Had p0171 intermittent issues for over a year now never bothered to fix it have to pass emissions this month so am forced to fix it.
Symptoms. No code will show at first but will be pending with a hike in rpm at idle 900 or so. Clear code rpm drops. O2 bank 1 s. 1 voltage fluctuates as normal b1s2 v pretty much steady.
Intake pressure 21 at idle
Can't find a vacume leak anywhere the cap on intake manifold was off replaced went away for a little longer came back
Have tightened manifold bolts gasket replaced last year.
So only other thing wrong is sais pump failed no longer runs. And the hose not sure which one won't connect on the pump side. My ecu is at pcmofnc getting tuned right now and getting sais tuned out.
Assumption/question. Can air somehow be getting in through sais system causing it to show lean? Should I just remove valve and cap it off. And how would I cap hose on intake hose. Or should I still be hunting a vacume leak or fuel delivery issue. Pressure is good regulator is new along with filter
Any help would be great I have torque app so if need any reading I'll be happy to post
At the point if you help me fix it ill find a way to give a small donation as I'm not rich. Ie. Why I'm not going to a dealer or mechanic
Thanks all have a good day