95 240sx runs well but gets bad mileage

5

Asked by Nov 27, 2015 at 11:35 PM about the 1995 Nissan 240SX 2 Dr STD Coupe

Question type: Maintenance & Repair

95 nissan 240sx s14 used to get 27mpg...currently getting around 10mpg! new 02 sensor...new fuel filter...maf checked and cleaned...air intake replaced. plugs replaced...car runs good. also, only codes was when maf was checked...never a code other than that!  anyone have any ideas?

4 Answers

40,905

Leaking fuel injectors?

5

mechanic says no leaking injectors.

18,775

Possible catalytic converter is starting to fail. You replaced the O2 sensor, was it throwing a code? That same code pertaining to the sensor could also pertain to a cat going bad. Bad cat = bad gas mileage. Eventually it will lead to rough running engine, frequent stalling. A shop can use a vacuum gauge to determine if there is any clogging in the cat.

20,465

when you're drifting that thing around Laguna Seca, you might use more gas-

Your Answer

Add photo

Related Questions

240SX

Looking for a Used 240SX in your area?

CarGurus has 16 nationwide 240SX listings and the tools to find you a great deal.

ZIP:

Search Nissan 240SX Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Nissan 240SX Experts

#1 David Troutman
David Troutman
Reputation 70
#1 LouB
LouB
Reputation 70
#3 Cyril Muckenhirn
Cyril Muckenhirn
Reputation 60
View All

Related Models For Sale

Used Nissan 300ZX
150 listings
Used Nissan 200SX
16 listings
Used Toyota Supra
42 listings
Used BMW M3
72 Great Deals out of 2,079 listings starting at $2,650
Used BMW 3 Series
1,521 Great Deals out of 38,937 listings starting at $1,495
Used Mazda RX-7
50 listings
Used Mazda MX-5 Miata
82 Great Deals out of 4,593 listings starting at $1,995
Used Ford Mustang
576 Great Deals out of 42,797 listings starting at $1,699
Used Mitsubishi Lancer Evolution
22 Great Deals out of 660 listings starting at $11,995

Used Cars For Sale