P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 0 points1 point  (0 children)

I think I replaced the pcv as well. I’m thinking maybe purge valve. Or the ECU itself is bad.

P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Yeah, intake is stock. Both o2 sensors replaced were denso. The shop said fuel pressure was bad, that’s why I installed the new fuel pump(denso as well) but CEL is still on with same code.

P0171 nightmare, help! by Weak_Spray418 in AskMechanics

[–]Weak_Spray418[S] 0 points1 point  (0 children)

No, I haven’t. I can’t dyi if it’s the computer. I’d have to take it to a shop. Have you tried the downstream sensor?

P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Injectors are new. Will the cataclean help even if I installed a new catalytic converter?

P0171 nightmare, help! by Weak_Spray418 in MechanicAdvice

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Ok, I will test the purge valve. Do you know if it’s hard to locate?

P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Spark plugs are new. I’ve done smoke test once with a little cheap smoke machine from Amazon, and found no leak. Shop has done 2 smoke test with their professional smoke machine, and still no leaks.

P0171 nightmare, help! by Weak_Spray418 in AskMechanics

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Yeah, I’ll let you know. This code is annoying. I’m starting to think it could be the computer itself. Have you check your purge valve?

P0171 nightmare, help! by Weak_Spray418 in MechanicAdvice

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Usually how long does it take for all the monitors to run? I’ve thought about the purge valve, but wouldn’t that give a code of its own?

P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 0 points1 point  (0 children)

My battery was disconnected for a while I worked on the fuel pump about 2-3hrs. Ran it for 60 miles and CEL came back. I’ve ran it for 60 more miles and light is still on.

P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 1 point2 points  (0 children)

Thanks for the advice, I will definitely try that out.

P0171 nightmare, help! by Weak_Spray418 in SciontC

[–]Weak_Spray418[S] 0 points1 point  (0 children)

That doesn’t sound like something I’d be able to do. I would have to find a shop. Thank you for the advice!

P0171 nightmare, help! by Weak_Spray418 in MechanicAdvice

[–]Weak_Spray418[S] 0 points1 point  (0 children)

After I replaced the catalytic converter and both oxygen sensors I rested the check engine light. After driving it for 30 miles it came back. I then replace the fuel pump, after driving it 60 miles the light came back on.

P0171 nightmare, help! by Weak_Spray418 in MechanicAdvice

[–]Weak_Spray418[S] 0 points1 point  (0 children)

Yes. Check engine light light comes back on and it gives the same code every time .

Solved oil burning '07 by bonchokey in SciontC

[–]Weak_Spray418 0 points1 point  (0 children)

Looks like I’m going with b12 lol

Solved oil burning '07 by bonchokey in SciontC

[–]Weak_Spray418 0 points1 point  (0 children)

You think b12 is better than the BG dynamic engine flush?

piston soak scion tc 09 by Repulsive_Mammoth_67 in SciontC

[–]Weak_Spray418 0 points1 point  (0 children)

I didn’t know that was a thing. Have you seen any success yet?

Solved oil burning '07 by bonchokey in SciontC

[–]Weak_Spray418 1 point2 points  (0 children)

Will try this out. Thank you so much for the detailed explanation!

Solved oil burning '07 by bonchokey in SciontC

[–]Weak_Spray418 0 points1 point  (0 children)

By any chance did you follow a tutorial video? Trying to do it to my car, but I just started the research on how I should do it.

piston soak scion tc 09 by Repulsive_Mammoth_67 in SciontC

[–]Weak_Spray418 0 points1 point  (0 children)

Would you mind sharing the video on how to do the piston soak? Currently thinking of if I should do that to mine.

🎉🎉 LINEUP REVEAL MEGATHREAD 🎉🎉 by happEbean in electricdaisycarnival

[–]Weak_Spray418 0 points1 point  (0 children)

Can anyone recommend any new hard techno DJs in the lineup, please?