sentra spec V SER problems - TriStateTuners.com :: Home of Tristate Auto Enthusiast

cmr076 · 11-12-2007, 08:28 PM

hey i have an 02 sentra spec V SE-R, it gets terrible gas mileage. like 250 to the tank. i know its a 2.5 which is kinda big for a 4cyl i guess. is it supposed to be that poor?? i dont really beat on it at all and shift around 3k ish... no CELs, just did plugs too. any help would be great. its just a bitch filling it up w/ 93 so often haha

zerioustt · 11-12-2007, 08:57 PM

i gave my mom my 06 because it sucked on gas..i averaged about 290ish not beating on mine. im pretty sure you can get away with 87 in it as well.

cmr076 · 11-13-2007, 12:49 AM

ugh what a PITA, haha its rediculous such a small underpowered car gets such ****ty gas mileage.

malloyboy1 · 11-13-2007, 12:59 AM

i always run 93 in the wrx and shifteing around 3300 i get 185ish to 3/4 tank and thats only a 2.0

do you do a lot of stop and go becasue that doesnt help at all

Jeffros Spec V · 11-13-2007, 01:47 AM

I had a spec v, it sucked on gas milage. and the turning radius sucks too.

cmr076 · 11-13-2007, 11:56 AM

^^ the turning radius is worse than my 2G eclipse, thats pretty bad. i guess the moral of the story is spec-v's blowwww

koho2731 · 11-13-2007, 11:29 PM

Quote:

Originally Posted by zerioustt

im pretty sure you can get away with 87 in it as well.

With his being an 02 no. The ks will pull timming even more then it does on 93. I got around 22-23mpg N/A and 25ish F/I at lest when kept my foot out of it. Also a tiny @ss tank doesn't help the range either

cmr076 · 11-13-2007, 11:47 PM

^ **** I Just Put 87 In... A Full Tank

Nismo2Honda · 11-14-2007, 12:15 AM

Quote:

Originally Posted by cmr076

^ **** I Just Put 87 In... A Full Tank

That sucks but I don't think it will do anything if you do it once plus if it sucks on gas it should be all gone fairly quickly

cmr076 · 11-14-2007, 12:38 AM

very true but im getting rid of the car so the last thing i need is the CEL coming on

Jeffros Spec V · 11-14-2007, 01:05 AM

Relocate the knock sensor, easy and very effective.

doug · 11-14-2007, 03:48 AM

Also, do you have the stock pre-cat on it? I hope you don't...

cmr076 · 11-14-2007, 11:54 AM

everything is stock... why what do you know that i dont??

piknockout · 11-14-2007, 01:22 PM

Pre-cat failure, that's what...especially on an '02. Do some searching on b15sentra.net and you'll find out why.

BTW, the gas mileage isn't bad at all depending on how you drive it. You can't look at the range due to the fact it has a small gas tank. If you're getting 250 to a tank, you're getting about 24-25mpg give or take. The most I've gotten range wise is about 315-325 going on a road trip cruising at 70mph the entire trip, getting about 29-30mpg. It depends on what type of driving you do and how you drive it.

And yes the Spec isn't the greatest car out there, but it's not as bad as people make it out to be.

twastheglow · 11-14-2007, 02:15 PM

When I had my '04 I consistently got 29-31mpg. Just something that you need to get used to.

Also, DEFINATELY get an aftermarket header without the cat. A blown motor isn't what you want if you're looking to get rid of it!!! Those motors had the tendency to suck parts of the precat back into the motor causing some sweet blown motors.
*mike*

cmr076 · 11-14-2007, 02:50 PM

this may sound dumb, but how can the exhaust suck something INTO the motor when its getting pushed away from it...

doug · 11-14-2007, 03:30 PM

Quote:

Originally Posted by cmr076

this may sound dumb, but how can the exhaust suck something INTO the motor when its getting pushed away from it...

Back pressure.

The pre-cat is weak in the stock manifold. Under strong heat, which the QR produces a lot of.. it falls apart, and crumbles. Due to the natural process of backpressure, that an internal combustion motor makes, the bits and pieces get sucked back into the cylinder, and score up the sides of the cylidner walls, causing oil to burn and the motor to be very very very unhappy.

twastheglow · 11-14-2007, 04:54 PM

^ Couldn't have said it better myself.
+1
*mike*

Glick · 11-14-2007, 06:16 PM

Don't forget to loctite the butterfly screws in the intake. Thats another issue thats been a problem since 02. Supposedly fixed in 06, but I loctited mine to be on the safe side. As to your ****ty gas mileage, how far are you running it out? Do you go just until the needle hits "E" fill up and then say "WTF?" I won't fill up until I get 325 out of the tank. I'm a pretty calm driver though.

cmr076 · 11-14-2007, 06:43 PM

im a calm driver. never beat on it due to how slow it is. i wait til the light goes on then re-fill.

11-12-2007, 08:28 PM	#1
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	sentra spec V SER problems hey i have an 02 sentra spec V SE-R, it gets terrible gas mileage. like 250 to the tank. i know its a 2.5 which is kinda big for a 4cyl i guess. is it supposed to be that poor?? i dont really beat on it at all and shift around 3k ish... no CELs, just did plugs too. any help would be great. its just a bitch filling it up w/ 93 so often haha __________________ 135 ├┼┼╕ 246R

11-13-2007, 12:49 AM	#3
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	ugh what a PITA, haha its rediculous such a small underpowered car gets such ****ty gas mileage. __________________ 135 ├┼┼╕ 246R

11-13-2007, 11:56 AM	#6
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	^^ the turning radius is worse than my 2G eclipse, thats pretty bad. i guess the moral of the story is spec-v's blowwww __________________ 135 ├┼┼╕ 246R

11-13-2007, 11:47 PM	#8
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	^ **** I Just Put 87 In... A Full Tank __________________ 135 ├┼┼╕ 246R

11-14-2007, 12:38 AM	#10
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	very true but im getting rid of the car so the last thing i need is the CEL coming on __________________ 135 ├┼┼╕ 246R

11-13-2007, 12:59 AM	#4
malloyboy1 Tri-State Addict Join Date: Jul 2007 Location: sellersville, PA Member #5438 My Ride: 05 subaru wrx iTrader: (2)	i always run 93 in the wrx and shifteing around 3300 i get 185ish to 3/4 tank and thats only a 2.0 do you do a lot of stop and go becasue that doesnt help at all

11-13-2007, 01:47 AM	#5
Jeffros Spec V Tri-State Post Whore Join Date: Mar 2005 Location: Langhorne PA Member #263 iTrader: (0)	I had a spec v, it sucked on gas milage. and the turning radius sucks too.

11-14-2007, 01:05 AM	#11
Jeffros Spec V Tri-State Post Whore Join Date: Mar 2005 Location: Langhorne PA Member #263 iTrader: (0)	Relocate the knock sensor, easy and very effective.

11-14-2007, 03:48 AM	#12
doug Tri-State Post Whore Join Date: May 2005 Location: Springfield, PA Member #450 My Ride: 2007 WRX STi Limited, 1969 Z/28 Camaro iTrader: (1)	Also, do you have the stock pre-cat on it? I hope you don't...

11-14-2007, 11:54 AM	#13
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	everything is stock... why what do you know that i dont?? __________________ 135 ├┼┼╕ 246R

11-14-2007, 01:22 PM	#14
piknockout Tri-State Addict Join Date: May 2006 Location: Aberdeen, MD Member #1855 My Ride: 2006 Subaru STi iTrader: (0)	Pre-cat failure, that's what...especially on an '02. Do some searching on b15sentra.net and you'll find out why. BTW, the gas mileage isn't bad at all depending on how you drive it. You can't look at the range due to the fact it has a small gas tank. If you're getting 250 to a tank, you're getting about 24-25mpg give or take. The most I've gotten range wise is about 315-325 going on a road trip cruising at 70mph the entire trip, getting about 29-30mpg. It depends on what type of driving you do and how you drive it. And yes the Spec isn't the greatest car out there, but it's not as bad as people make it out to be. __________________ 2006 Aspen White Subaru Impreza WRX STi - *To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.* - *2007 Black Audi A3 2.0T 6MT S-Line* 3 STU - 2006 Philly STX Champ - 2007/2008 WDCR STX Champ - Sponsored by To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

11-14-2007, 02:15 PM	#15
twastheglow TST Ruined My Life! Join Date: Jul 2007 Location: Binghamton, NY Member #5286 My Ride: pulls bitches iTrader: (0)	When I had my '04 I consistently got 29-31mpg. Just something that you need to get used to. Also, DEFINATELY get an aftermarket header without the cat. A blown motor isn't what you want if you're looking to get rid of it!!! Those motors had the tendency to suck parts of the precat back into the motor causing some sweet blown motors. mike

11-14-2007, 02:50 PM	#16
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	this may sound dumb, but how can the exhaust suck something INTO the motor when its getting pushed away from it... __________________ 135 ├┼┼╕ 246R

11-14-2007, 04:54 PM	#18
twastheglow TST Ruined My Life! Join Date: Jul 2007 Location: Binghamton, NY Member #5286 My Ride: pulls bitches iTrader: (0)	^ Couldn't have said it better myself. +1 mike

11-14-2007, 06:16 PM	#19
Glick Tri-State Aficionado Join Date: Dec 2006 Location: Mount Joy, PA Member #3240 My Ride: 2006 Nissan Sentra SE-R Spec-V iTrader: (0)	Don't forget to loctite the butterfly screws in the intake. Thats another issue thats been a problem since 02. Supposedly fixed in 06, but I loctited mine to be on the safe side. As to your **ty gas mileage, how far are you running it out? Do you go just until the needle hits "E" fill up and then say "WTF?" I won't fill up until I get 325 out of the tank. I'm a pretty calm driver though. __________________ Current Ride** 2006 Nissan Sentra SE-R Spec-V 2005 Mitsubishi Lancer Evolution VIII

11-14-2007, 06:43 PM	#20
cmr076 Tri-State Post Whore Join Date: Aug 2006 Location: blue bell/gwynedd valley, PA Member #2319 My Ride: S4 iTrader: (8)	im a calm driver. never beat on it due to how slow it is. i wait til the light goes on then re-fill. __________________ 135 ├┼┼╕ 246R

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