o2 sensor.... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ELITEBB127108 · 04-09-2002, 10:54 PM

hey guys...my 95 240sx has the engine check light on right now, and i think its because of the o2 sensor.... i know that a bad o2 sensor can eat up gas like crazy and i think thats why my car eats up gas alot....can the bad o2 sensor effect on performance? i just ran my friend's bone stock solara and got SMOKED....=( maybe i peeled out too much, but man....this sucks....neways....
just wanted to know how much o2 sensors can effect on the car's performance and what it can do....some help!!
thanks!!

*sykikchimp* · 04-09-2002, 11:10 PM

It can make your car run real rich which obviously is not optimal for the most performance from your car.  You should regain some lost ponies, and definately gain a few mpg.  

Also find out what error code the ecu threw and check it out to be sure thats the problem

9591 · 04-10-2002, 02:35 AM

The ECU only looks at the O2 sensor when you're "cruising", like driving on the freeway at mid-throttle. At WOT (pedal-to-the-metal), the output from the O2 is ignored. So a bad O2 sensor will cause mileage (and emissions) to suffer, but WOT performance won't be affected.

Why do you think the light is being caused by the O2 sensor? Have you done a code check on the ECU?

adey · 04-10-2002, 05:45 AM

Sorry this isn't DIRECTLY related, but on the topic, which section of the MAF do you need to clean if it is indeed just a dirty sensor?  Is it just the plug on the outside, or do you have to take it apart and stuff?

I'm running really rich (or so I diagnose from the strong gasoline smell and bad mileage) and am trying to find the source of my troubles...

Broadwayblues · 04-14-2002, 09:36 AM

My car was running rich and that was the first thing that I changed. Took care of it right away. I went to Autozone and got one for less then $30. Mileage and performance went way up. Made a huge difference! <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/lookaround.gif" border="0" valign="absmiddle" alt=':look:'>

04-09-2002, 11:10 PM	#2
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 44 Posts: 6,525 Trader Rating: (0) Feedback Score: 0 reviews	It can make your car run real rich which obviously is not optimal for the most performance from your car.  You should regain some lost ponies, and definately gain a few mpg.   Also find out what error code the ecu threw and check it out to be sure thats the problem __________________

04-10-2002, 05:45 AM	#4
adey Post Whore! Join Date: Mar 2002 Location: Hong Kong Posts: 3,072 Trader Rating: (0) Feedback Score: 0 reviews	Sorry this isn't DIRECTLY related, but on the topic, which section of the MAF do you need to clean if it is indeed just a dirty sensor?  Is it just the plug on the outside, or do you have to take it apart and stuff? I'm running really rich (or so I diagnose from the strong gasoline smell and bad mileage) and am trying to find the source of my troubles... __________________ Instagram: @SX180HKG

04-14-2002, 09:36 AM	#5
Broadwayblues Zilvia Member Join Date: Apr 2002 Posts: 193 Trader Rating: (0) Feedback Score: 0 reviews	My car was running rich and that was the first thing that I changed. Took care of it right away. I went to Autozone and got one for less then $30. Mileage and performance went way up. Made a huge difference! <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/lookaround.gif" border="0" valign="absmiddle" alt=':look:'> __________________ "stop lights timed to 55 mph are also timed to 110 mph!" http://www.geocities.com/broadwayblues34/240sx.html 92 240SX Coupe! MB clear side markers Clear bumper lights 3 inch universal muffler w/ removable tip. Strut tower bar- Front OBX SS version 2

04-09-2002, 10:54 PM	#1
ELITEBB127108 Join Date: Feb 2002 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	hey guys...my 95 240sx has the engine check light on right now, and i think its because of the o2 sensor.... i know that a bad o2 sensor can eat up gas like crazy and i think thats why my car eats up gas alot....can the bad o2 sensor effect on performance? i just ran my friend's bone stock solara and got SMOKED....=( maybe i peeled out too much, but man....this sucks....neways.... just wanted to know how much o2 sensors can effect on the car's performance and what it can do....some help!! thanks!!

04-10-2002, 02:35 AM	#3
9591 Leaky Injector Join Date: Feb 2002 Posts: 122 Trader Rating: (0) Feedback Score: 0 reviews	The ECU only looks at the O2 sensor when you're "cruising", like driving on the freeway at mid-throttle. At WOT (pedal-to-the-metal), the output from the O2 is ignored. So a bad O2 sensor will cause mileage (and emissions) to suffer, but WOT performance won't be affected. Why do you think the light is being caused by the O2 sensor? Have you done a code check on the ECU?