AirTex, P0171 FYI
#1
CF Veteran
Thread Starter
AirTex, P0171 FYI
Just finished installing the fuel pump and my lean code is now gone. I never had a vacuum leak on the manifold or any of my lines. Never had that P0171 code until just after I installed the Airtex pump in May now that I think of it.
I have deduced that (based off of my AFR guage at WOT) that the airtex wasn't maintaining proper fuel pressure, and at WOT it raised the AFR from 15 - 19 as the RPM increased beyond 2500. The next week my pump died. (last week)
So even if your airtex IS working... don't count yourself lucky. Running lean can cause engine damage. I now have what sounds like possibly piston slap, and have had it for over a month now. Never buying another engine/fuel/transmission management part from autozone or advance again.
Another reason not to use Airtex.
I have deduced that (based off of my AFR guage at WOT) that the airtex wasn't maintaining proper fuel pressure, and at WOT it raised the AFR from 15 - 19 as the RPM increased beyond 2500. The next week my pump died. (last week)
So even if your airtex IS working... don't count yourself lucky. Running lean can cause engine damage. I now have what sounds like possibly piston slap, and have had it for over a month now. Never buying another engine/fuel/transmission management part from autozone or advance again.
Another reason not to use Airtex.
#2
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Join Date: Nov 2010
Location: In the middle of Minnesota!
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Year: 1999
Model: Cherokee
Engine: 4.0
As if we need another one.
Airtex fuel pumps are offered by many parts stores because they offer a low price point.
As we all learn as we age, price is only ONE thing to consider. More important than price is reliability.
That is why I never install nor will I recommend Airtex. Their reliability history is bottom of the barrel IMHO.
Airtex fuel pumps are offered by many parts stores because they offer a low price point.
As we all learn as we age, price is only ONE thing to consider. More important than price is reliability.
That is why I never install nor will I recommend Airtex. Their reliability history is bottom of the barrel IMHO.
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