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Author
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Topic: SN95 Problems (Part 2)
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MustangNate
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Member # 4559
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posted
 
 
Bad gas mileage!!
Filled my tank, reset my trip odometer. Car had about 1/16th of a tank left so I went to the gas station to fill up again. How many miles did I make it? 115.8 miles!
The gas tank is 15.6 gallons on these things, so that's roughly 7.42mpg. Any ideas on what I can do to increase my gas mileage? I've already done the following:
Cleaned MAF
New Plugs
New Plug Wires
New MSD Cap N Rotor
New MSD Coil
New Fuel Filter
Techron Fuel System Cleaner
K&N Air Filter
What else can I do? MSD Ignition Box? Different car? lol
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1989 Mustang LX Vert, 5.0 Auto
Posts: 1032 | From: Chico | Registered: May 2004
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Hungry Hippo
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Member # 537
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posted
how's it running? could be the o2 sensors or maybe a plugged cat
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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RED@7kVERT *8850GT*
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Member # 5909
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posted
Different car...haha
ya ive got H/C/I...
ALL NEW SENSORS...get about 11mpg... ![[Roll Eyes]](rolleyes.gif)
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02 Z06-11.0 @ 132 1.9 60'
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Sold:05 CTS-V-13.1@114
Sold:01 Cobra Vert-12.0@119
Posts: 2432 | From: -916- | Registered: Aug 2005
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MustangNate
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Member # 4559
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posted
Runs kinda rough, idles stupid.
Acceleration is back to being crappy.
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1989 Mustang LX Vert, 5.0 Auto
Posts: 1032 | From: Chico | Registered: May 2004
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*BlueBeast88.306*
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Member # 6360
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posted
quote:
Originally posted by 95VERT306 '8850GT':
Different car...haha
ya ive got H/C/I...
ALL NEW SENSORS...get about 11mpg...
+1
Posts: 462 | From: Concord | Registered: Jan 2006
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92stangLX
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Member # 3252
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posted
pull one of your plugs and see if you are running rich. Did you try pulling codes?
How are you driving the car? Are you on it all the time? Is this city, freeway, or mixed milage?
[ January 09, 2007, 09:44 PM: Message edited by: 92stangLX ]
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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Hungry Hippo
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Member # 537
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posted
quote:
Originally posted by 95VERT306 '8850GT':
Different car...haha
ya ive got H/C/I...
ALL NEW SENSORS...get about 11mpg...
mine has h/c/i + 10 psi and gets 18-20
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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JohnB
Tech Moderator
Member # 969
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posted
Bad MAF or plugged cat.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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MustangNate
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Member # 4559
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posted
quote:
Originally posted by 92stangLX:
pull one of your plugs and see if you are running rich. Did you try pulling codes?
How are you driving the car? Are you on it all the time? Is this city, freeway, or mixed milage?
The plugs are kinda tan, I guess that means the ignition is too far advanced? When I got it, the thing was at 20* BTDC, so I put it back down to 10* BTDC. I don't have a code scanner, AutoZone told me they couldn't do 94-95 Mustangs and that I'd have to take it to the dealer to run a diagnostic on it. Not gettin' on it, suppose to be a daily driver. It's city driving.
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1989 Mustang LX Vert, 5.0 Auto
Posts: 1032 | From: Chico | Registered: May 2004
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94gt
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Member # 3060
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posted
quote:
Originally posted by MustangNate:
quote:
Originally posted by 92stangLX:
pull one of your plugs and see if you are running rich. Did you try pulling codes?
How are you driving the car? Are you on it all the time? Is this city, freeway, or mixed milage?
The plugs are kinda tan, I guess that means the ignition is too far advanced? When I got it, the thing was at 20* BTDC, so I put it back down to 10* BTDC. I don't have a code scanner, AutoZone told me they couldn't do 94-95 Mustangs and that I'd have to take it to the dealer to run a diagnostic on it. Not gettin' on it, suppose to be a daily driver. It's city driving.
go back there... I picked up a code scanner that worked great for my 94 for about $40
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2020 Explorer ST
2011 Silver Raptor 'Screw
Posts: 5777 | From: Beavercreek, OH | Registered: Jul 2003
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MustangNate
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Member # 4559
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posted
quote:
Originally posted by JohnB:
Bad MAF or plugged cat.
A friend of mine and I went out tonight, he had the same thought that the cats might be plugged. The thing is a dog until 40mph, then it opens up and screams.
Tried to power-brake it and it just revved to 1000rpm; Didn't spin the tires, didn't move, nothing.
Also has a real small vibration in the steering wheel @ 35mph in 3rd but if I have it in 2nd and I'm doing 35mph there's no vibration? Hell I dunno.
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1989 Mustang LX Vert, 5.0 Auto
Posts: 1032 | From: Chico | Registered: May 2004
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NonOpSlow2V
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Member # 6111
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posted
my 94 GT is all jacked up too...if i could get it running right i could tell u my MPG but i cant even get it goin without it just dying or not firing up again...i am close to just buying another stang but i really like this one...i am almost quitting on it...good luck
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1997 Autumn Orange GT vert
1996 Mystic Cobra
2005 95ci Harley Road King
2011 F150 Raptor
Posts: 2139 | From: San Francisco | Registered: Oct 2005
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RED@7kVERT *8850GT*
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Member # 5909
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posted
quote:
Originally posted by Hungry Hippo:
quote:
Originally posted by 95VERT306 '8850GT':
Different car...haha
ya ive got H/C/I...
ALL NEW SENSORS...get about 11mpg...
mine has h/c/i + 10 psi and gets 18-20
So what could it be??
i have no cats..and a Pro M maf for my 24 lbd.ers
???
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02 Z06-11.0 @ 132 1.9 60'
_ _ _ _ _ ____ _ _ _ _ _
Sold:05 CTS-V-13.1@114
Sold:01 Cobra Vert-12.0@119
Posts: 2432 | From: -916- | Registered: Aug 2005
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