Some of you may remember a couple of months ago I posted that I was having MPG troubles. I was getting horrrible mpg. Well then the car got put up and I didnt get a chance to fix the problem. I think next weekend I will be replacing the O2 sensor. I have also been told that since I run a 160 stat I get bad gas milege when it is cold outside?!?!?

My question, besides the O2 sensor, it there anything else I should check/replace?

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91 RS Camaro
3.1L
Cat Back System, K&N filter,modified air box, Fastchip Stage 2, 160 thermo, Rapidfires and Bosch Wires 5 Air Horns
Stereo: Clarion Deck, 2 12' Kicker CompVR's, IX702

Kills: 89' 302 Thunderbird, 88' 305 Cutless Supreme, 90' 3.8 Bonneville

My Car

 

sometimes you have to pay attention to the small things like if your tires are underinflated and some of the other things i forget right now.

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91 Blue RS with ASCD SS hood w/hood pins, Flowmaster 80 series w/3 inch dual exhaust, K&N, Hypertech Power Chip, Bosch Platinum wires and plugs.(19 years old and all this bought and paid for by myself, except the car that was paid for by State Farm...long story with the minor fender benders and them not wanting to pay for repairs...mwahaha)

 

Any other suggestions?

------------------
91 RS Camaro
3.1L
Cat Back System, K&N filter,modified air box, Fastchip Stage 2, 160 thermo, Rapidfires and Bosch Wires 5 Air Horns
Stereo: Clarion Deck, 2 12' Kicker CompVR's, IX702

ICQ: 65384740

My Car ( no stereo pics yet)

 

Also I was looking up at www.autozone.com to see how much the o2 would be. It gave me three choices,
BOSCH
O.E. TYPE
12014
$17.99
BOSCH
UNIVERSAL
11025
$18.99
BOSCH
UNIVERSAL
11027
$21.99

Which one should I get? What is the difference between them, is one supposed to be 'performance' orianted(sp)??
Any help would be nice.


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91 RS Camaro
3.1L
Cat Back System, K&N filter,modified air box, Fastchip Stage 2, 160 thermo, Rapidfires and Bosch Wires 5 Air Horns
Stereo: Clarion Deck, 2 12' Kicker CompVR's, IX702

ICQ: 65384740

My Car ( no stereo pics yet)

 

12014, the same one the V8 guys use, is the one for our V6 car. It has the correct wiring harness terminal on it. The others don't, you'll have to re-use the old pigtail from your old oxy sensor.

There's a breed of oxy sensors out there that are called "heated oxygen sensors". These have two extra wires on them. One wire goes to ground, the other goes to a positive battery source that is "on" when the car's "on". These two wires go to a built-in heater. All this does is help the oxygen sensor operate faster since it doesn't need the exhaust to heat it.

It's also used for some aftermarket headers, in which the oxy sensor is too far away from the motor. When this happens, the oxy sensor never heats up (or takes a lonnnnng time to do so), and the car always runs in open loop. People install the heated ones to get the car into closed loop. I bet if you searched the tech forum for "heated oxygen sensor" you'd find part #'s.

mAjInRS, good point about the tires! Also an alignment & lube job helps MPG too since the tires shouldn't be fighting each other


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

So should i get the V8 one, or just get the cheaper OE one?

 

If you read Tom's message again, he said that 12014 (the OE one) is the v8 one.. note OE means Original Equipment..

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'86 Camaro SC, black /w silver racing stripes
2.8l MPFI/700r4
In search of new v8 engine & transmission
MSD coil, Accel 8mm wires, SplitFire plugs, Gabriel hijackers

 

My Bad. How hard is it to change the o2, ive never done this before.

 

yes get the O.E. sensor. it's very easy to replace. only thing is you'll need like a 21 or 22mm wrench. if you don't have one they're kinda expensive. all you do is disconnect the connector, then unscrew the sensor. install is reverse.

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Dan
1990 3.1L RS
80 Series Flowmaster
It's fast(er than a 3 cyl metro)

 

Thanks for all the help. I will get back to you guys w/ the results.

 

What kind of mileage are you getting??

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Jason E
'89 Camaro RS 2.8 (Medium Gray Metallic)
Hypertech chip/K&N filters/Accel 8.8 wires, Accel Supercoil/RapidFires
Eclipse CD and 100x4 amp/Boston plates and 6x9s
Alpine Alarm, Keyless Entry
IROC tailights, tinted windows
"It's for sale"

Looking for: TPI 350 IROC, T/A or GTA
JasonEE98 on AOL IM

 

Rough estimate, 10-13 MPG. Last fall I was getting around 25! So as you can see this really sucks! I cant afford it either, so I sure hope the O2 thing helps.

What are other people getting?

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91 RS Camaro
3.1L
Cat Back System, K&N filter,modified air box, Fastchip Stage 2, 160 thermo, Rapidfires and Bosch Wires 5 Air Horns
Stereo: Clarion Deck, 2 12' Kicker CompVR's, IX702

ICQ: 65384740

My Car ( no stereo pics yet)

 

im getting 9 in city and 16 on freeway. Thats with a 450 dollar full tune up, properly inflated tires, etc. my engine is on its last leg

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89 Firebird (AKA "Money")
2.8 V6 w/ t5 tranny (383 tpi t56 12/01)
Flowmaster 80 series, 3" Intermediate, SS Tips, Random Tech Cat, Msd Coil, MSD 6a, Accel 8.8 wires, Cold Air Intake w/ K&N, Lakewood LCA's, Brushed aluminum Hood pins ETC...
Next:
Spohn Torque Arm, Lakewood Panhard bar, BMR Fabrication Sub Frame connectors...
-------------------------
My Site:
www.geocities.com/firebird89white

" I'd rather run last in a full out race, than to NOT run at all ".

 

Right now I'm gettin 17MPG Highway. Could it be the cold air? That's with a full tuneup and everything. In December, BEFORE it got cold, I was getting 25mpg

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See pics @ Billy's Firebird
92 Bird 3.1L Auto
Best $750 I ever spent....
DRIVE IT LIKE YOU STOLE IT!
Kills:
93 Mustang LX (Before Mods)
98 or 99 Dodge Stratus (tough one, edged out at 40)
92 Camaro RS 305 TPI
Close Calls
94 Grand Am 3.1 V6
92 Cavalier 3.1 V6
01 Porsche 911 Turbo (Had em till first gear)
Mods-Jet Stage 2 Performance Chip, Accel Cap/Rotor, Accel 8.8 MM Wires, Accell Coil, AC Delco Rapidfire Plugs, Dynomax Catback, K&N
AIM name OVRCLCK350

 

Well I finally got around to put it in, about 10 mins ago. Once I fill up again, I will measure MPG.

Also the car seems not to bounce at idle anymore, and takes off more smoothly!

BIG PLUS!!!!!!



[This message has been edited by Garmer (edited February 25, 2001).]