300ZX (Z32) Forums Dedicated to 90-96 ZCars otherwize known as the Z32's

02sensors codes

Old 04-21-2014, 08:29 PM
  #1  
Registered User
Thread Starter
 
Join Date: Mar 2014
Posts: 4
02sensors codes

I have a 1990 300zx automatic Na , that has me spending a lot of money on gas, I'm only getting 10 mpg, I've changed all injectors, timing belt, fuel pump, alternator, and many more parts, I didn't change these parts because of the mpg, I just changed them because it was time, computer is giving is giving oxygen sensor codes but my z specialist mechanic says that he doesn't believe that the 02sensors is the reason why I'm getting bad gas mialeage? The works on a lot of z's I mean a lot he dynos the cars and everything but can't find the reason why such bad mpg, am I missing anything here withe the sensors, I have always believed that bad sensors = running rich= burning too much fuel. He says that not necessarily that's the case? Now what's your opinion, should I just change them anyways and please advise which ones I should buy, or other wise. The guy is good but this is just not jiving with me, I need some others advise, thanks
Sharpshooter64 is offline  
Old 04-21-2014, 09:08 PM
  #2  
Registered User
 
Skully's Avatar
 
Join Date: Feb 2002
Location: Saskatoon, SK
Posts: 2,885
Does the car feel sluggish at all or anything?
So regardless of the fact that the mechanic thinks its not O2's...They are still throwing you a code...I would say you can try cleaning the connections first (and to add you can test them with a multimeter), and see if you get a code again, or just plain outright change them. I would recommend stock bosch sensors.

Last edited by Skully; 04-21-2014 at 09:15 PM.
Skully is offline  
Old 04-22-2014, 04:43 PM
  #3  
Registered User
 
PredatorZ's Avatar
 
Join Date: Apr 2011
Location: A Shady Tree in Boise
Posts: 1,032
Injectors

You stated that you changed all the injectors, did you replace them with stock injectors ?
PredatorZ is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Seattle_Max
300ZX (Z31) Forums
6
03-26-2014 04:47 PM
Aphrodite
300ZX (Z32) Performance / Technical
7
06-11-2009 11:50 PM
MaxQ
300ZX (Z31) Performance / Technical
0
06-22-2005 04:05 PM
vasago
280ZX (S130) Forums
5
06-28-2004 05:07 PM
modified300zxt
300ZX (Z31) Forums
0
10-16-2002 10:15 AM


Thread Tools
Search this Thread
Quick Reply: 02sensors codes


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.