10-31-2008, 06:00 PM
|
#1
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
Im Gettin crappy gas mileage
Ok.. heres whats goin on... Im gettin piss as poor gas mileage
120-125 to half a tank
250-275 to a full tank
i floor it only when needed to and i change out plugs, wires, and all that when i got my head's done and LIMG done too.... Plus i did my Fuel Pump also when i bought the car and my FPR did go out before and i swapped it in for another used one outta the J/Y.. and i cleaned it out.. and ran great after that... for about 6-8 months.....
now im gettin crappy gas mileage.... as what i said.. not sure whats up now any ideas... it did sit for about a month to two months.. so im gonna run some injector cleaner.. also.. but mileage wasn't all that hot before that too.. so not sure as of yet.. oh yea.. the only Code my computer kicks on is P0420.. but thats because i punched out my cat... but im gettin a new one soon... but i did have my Evap code go on me.. and i had to replace the Gas Cap... after that now im not sure what else is causing bad fuel economy
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
Last edited by 01OldsAleroGt : 10-31-2008 at 06:03 PM.
|
|
|
10-31-2008, 06:51 PM
|
#2
|
Keepin it Real
Join Date: Nov 2003
Location: Alexandria, VA
Posts: 12,522
|
bank 2 sensor 1, o2 sensor.
__________________
2015 Audi SQ5
2000 Alero GLS Coupe - still in the family, but I don't drive it anymore
|
|
|
11-01-2008, 11:07 AM
|
#3
|
Thread Crapper
Join Date: Apr 2007
Location: dmz
Posts: 1,505
|
try seafoam??
__________________
Quote:
Originally Posted by Ttop191
I now know how to chronically please rectums
|
|
|
|
11-01-2008, 11:44 AM
|
#4
|
Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
|
I would do seafoam (OR BETTER YET- GM Brand stuff) thru the INTAKE first.
Then I would do the 02 sensor.
Realistically your about where they run at. Could be crappy gas? They test gas quality down there? They dont in Ohio. DO in Michigan and I notice a difference when I get gas in Mich.
__________________
-Ryan
|
|
|
11-01-2008, 12:40 PM
|
#5
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
well i ran basic codes yesturday... pulled up Evap System Leak and Low Catalyst Efficenty.. i know the cat code.. but the Evap code i don't know... but how do i do the Seafoam treatment ?
gonna be hookin her up to a Genesys OTC computer on monday to get the readout on the O2 Sensors and what not
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
Last edited by 01OldsAleroGt : 11-01-2008 at 01:48 PM.
|
|
|
11-01-2008, 01:50 PM
|
#6
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
ahh ok never mind.. im gonna run seafoam thru the PCV and fuel tank
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
|
|
|
11-02-2008, 12:28 PM
|
#7
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
So.. i dove into her last night... found the Evap leak... collapsed hose and the FPR is in working condition... but i really started to think back to my 96 Avenger.... since the backpressure..i know isn't the highest of issues... but i think due to the lack there of cat.... it is causing the back pressure to drop.. which is causing the car to run rich... well. that what my theory is..
gonna be running more tests tomorrow...
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
|
|
|
11-02-2008, 04:40 PM
|
#8
|
Premier V.I.P. Member
Join Date: Dec 2006
Location: n\a
Posts: 2,592
|
275 / 14 = 19.6 mpg
That's bad?
__________________
"If the author of the Declaration of Independence were to utter such a sentiment today, the Post Office Department could exclude him from the mail, grand juries could indict him for sedition and criminal syndicalism, legislative committees could seize his private papers ... and United States Senators would be clamoring for his deportation that he... should be sent back to live with the rest of the terrorists." - Frank I. Cobb
|
|
|
11-02-2008, 04:50 PM
|
#9
|
Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
|
i get like 24-28.5 mostly highway. depends on where hes driving. if i got 19 hwy, i'd be PISSED.
|
|
|
11-02-2008, 04:55 PM
|
#10
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
dude.. i was actually gettin anywhere between 325-340 city when i was delivering pizzas
im gettin crappy gas in city and highway.
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
Last edited by 01OldsAleroGt : 11-02-2008 at 04:59 PM.
|
|
|
11-02-2008, 05:01 PM
|
#11
|
Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
|
supposedly we're suppose to get 29mpg highway... which is damn near impossible unless its ALL highway (caravan to ASS style)
|
|
|
11-02-2008, 05:55 PM
|
#12
|
Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
|
I got a 3100 SFI Buick Century. I took the stock muffler off and put a fart cannon on it. My gas mileage went DOWN.
?
Let me say this again. The GM stuff is WAY WAY WAY WAY better than Sea foam. Advance Auto raised the price of Sea Foam to $9 a can (wasnt even $6 before). The GM stuffs like $10 and is way more potent.
__________________
-Ryan
|
|
|
11-02-2008, 07:18 PM
|
#13
|
Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
|
got a name, ryan?
|
|
|
11-02-2008, 07:56 PM
|
#14
|
Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
|
GM Top End Cleaner Part # 1050002
Comes in a bottle much like Sea Foam.
Google search pwns:
http://www.sytyarchives.com/howto/vi...p&d ir=engine
Im telling you all this. If you think Sea Foam is good, give this stuff a try. Twice as potent!
__________________
-Ryan
|
|
|
11-02-2008, 08:05 PM
|
#15
|
GX Member
Join Date: Aug 2008
Location: Greenville, Texas
Posts: 84
|
Quote:
Originally Posted by 01OldsAleroGt
So.. i dove into her last night... found the Evap leak... collapsed hose and the FPR is in working condition... but i really started to think back to my 96 Avenger.... since the backpressure..i know isn't the highest of issues... but i think due to the lack there of cat.... it is causing the back pressure to drop.. which is causing the car to run rich... well. that what my theory is..
gonna be running more tests tomorrow...
|
Where did you find the EVAP leak? I live in Texas and last week I drove to Mesquite, which is about 40 miles from where I live and got horrible gas mileage. I started on 3/4 of a tank and by time I got home it was about on a 1/4.
The next day, the service engine light came on and that was one of the things that came up that might be the problem. I already replaced the gas cap and the service engine light is still on. I have the 2.2 btw.
|
|
|
11-02-2008, 11:01 PM
|
#16
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
well check the hoses leading away from the PCV.. thats where i found a collapsed line
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
|
|
|
11-02-2008, 11:02 PM
|
#17
|
636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,876
|
Edited, nevermind.
|
|
|
11-03-2008, 07:41 AM
|
#18
|
Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
|
? wth?
__________________
-Ryan
|
|
|
11-03-2008, 12:57 PM
|
#19
|
Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
|
Quote:
Originally Posted by jackal2000
bank 2 sensor 1, o2 sensor.
|
There is no bank 2 sensor on any Alero.
You must be referring to Bank 1 Sensor 2.
__________________
Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
|
|
|
11-03-2008, 11:00 PM
|
#20
|
GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
|
well scanned it today... its all pointing fingers to being catless.... the sprurattic switching of the O2 Sensors... which they are reading both the same due to the punched out cat..is causing the ECU to dump more and more fuel into the system... so i'll def be investing into my cat and exhaust very VERY soon... YAlero.. you'll be gettin your money to ya as soon as i get it !
__________________
2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -4. The time now is 02:25 AM.
|