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dreaded P0171 and p0174

Silver rocket (CEG) wrecked his car so i grabbed alot of engine part, Most for spares but i will toss most of them on today and see what happens: both upper 02's, egr valve, iac valve, Brake booster line, dpfe sensor, and the 4 way split vaccum lines,
 
Ok well I got this same problem and has happened to me before. Do you have a aftermarket intake on the car? My car threw those codes after I put an aftermarket intake on. I dunno why because all the connections are the same. Anyway I took the intake off and went back to my stock intake and reset the codes and the cel never came back on.

I went from this hose and intake
037-2.jpg


038-2.jpg


to this hose and intake

035-2.jpg


036-2.jpg


So needless to say I will be removing this tomorrow and putting stock back on since the throttle hang fix/replacement of new hose w/out canister didn't work and still threw the codes.


edit.......when I put on aftermarket intake last year I used the canister type hose and it threw the codes so when I went back to stock the codes never came back. I assumed when I put on the straight hose with the copper cap for the throttle hang fix this time would work but it didn't. I have came to the conclusion that my car doesn't like the aftermarket intake.
 
ok update I went back to stock and reset my comp and have been driving the car all day....about 75 miles and the codes aren't coming back. So it's safe to assume my aftermarket intake is the problem.
 
I have had my intake for quite awhile, almost 2 years. I cant see it just now throwing a code from it... if i had my stock set up i would try it though. I replaced IAC, EGR, and DPFE in the last few days and have no change,
 
Well I have drove mine for 2 days now and no cel....and like I said it did it with me last yr when I took my stock off and put the aftermarket on. So it won't be going back on ever.....car also seems to pull harder with the stock one on.
 
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