Service Engine Soon: Code P0171

hansoac · 05-17-2011, 07:36 PM

Well, I usually only put Shell's Ultra 93 in. I did notice it was pumping out very slow..maybe the last bit they had left. Not sure if that would have any effect.

UNKNOWN_370 · 05-17-2011, 09:00 PM

Quote:

Originally Posted by hansoac

Well, I usually only put Shell's Ultra 93 in. I did notice it was pumping out very slow..maybe the last bit they had left. Not sure if that woul and never d have any effect.

Funny u say that. I filled up with v power right after my oil change (castrol edge). The car. Felt sluggish as hell. Went back to quik trip gas and the car is ridiculously fast again. I only use vpower in my altima 3.5. And it does great. Not so with my Z.

If u live in dfw and never tried quik trip gas. Take the pepsi challenge. It will save you money too.

chops · 05-17-2011, 09:30 PM

Quote:

Originally Posted by UNKNOWN_370

Funny u say that. I filled up with v power right after my oil change (castrol edge). The car. Felt sluggish as hell. Went back to quik trip gas and the car is ridiculously fast again. I only use vpower in my altima 3.5. And it does great. Not so with my Z.

If u live in dfw and never tried quik trip gas. Take the pepsi challenge. It will save you money too.

quik trip's and alot of those independent gas stations simply buy gas from whoever is cheaper at the time of ordering. it could very well be shell, chevron, or 76. how do i know? i have an acquaintance that runs a quik trip out here and he usually buys 76, but has told me hes gotten chevron, and shell many times. its a toss up really

hansoac · 05-18-2011, 06:21 AM

Interesting..my grandfather was a mechanic for 35 years and told me he will only use Shell, so I kinda picked it up from him. But, last night I went out and reseated my air filters nice and tight..the CEL went away..i drove the car about 2 miles and it felt as if it was starting to get better...does it take a bit for the ECU to re-learn (if it even has to from something like that) or was there air in the engine somewhere causing the misfire/jumping of the car/engine?

JeanaVilee · 07-29-2011, 04:39 AM

I've also had this code (on a different car) from a bad O2 sensor, but given that it is reporting it on both banks that doesn't seem to be the problem here.

07-29-2011, 04:39 AM	#5 (permalink)
JeanaVilee Base Member Join Date: Jul 2011 Location: USA Posts: 1 Drives: None Rep Power: 14	I've also had this code (on a different car) from a bad O2 sensor, but given that it is reporting it on both banks that doesn't seem to be the problem here. __________________ toyota service

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05-17-2011, 07:36 PM	#1 (permalink)
hansoac Enthusiast Member Join Date: Feb 2011 Location: Toledo Posts: 497 Drives: 09 370z Sport CY Rep Power: 15	Well, I usually only put Shell's Ultra 93 in. I did notice it was pumping out very slow..maybe the last bit they had left. Not sure if that would have any effect.

05-18-2011, 06:21 AM	#4 (permalink)
hansoac Enthusiast Member Join Date: Feb 2011 Location: Toledo Posts: 497 Drives: 09 370z Sport CY Rep Power: 15	Interesting..my grandfather was a mechanic for 35 years and told me he will only use Shell, so I kinda picked it up from him. But, last night I went out and reseated my air filters nice and tight..the CEL went away..i drove the car about 2 miles and it felt as if it was starting to get better...does it take a bit for the ECU to re-learn (if it even has to from something like that) or was there air in the engine somewhere causing the misfire/jumping of the car/engine?