Does my 240 have a bad O2 sensor?
#1
11-22-2010 | 06:44 AM
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Joined: Nov 2010
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Does my 240 have a bad O2 sensor?
All you wanted to know about 240sx O2 sensorsA bad O2 sensor can have a significant affect on gas mileage. Here's a procedure for checking the O2 sensor. The procedure may be the same for your year.
Checking the O2 sensor
The following procedure applies to all 1991 and up 240-SX models:
1 - Turn on ignition switch (do not start engine).
2 - Turn diagnostic mode selector on ECU fully clockwise.
3 - Wait a few seconds.
4 - Turn diagnostic mode selector fully counterclockwise.
5 - You are now in MODE-II.
6 - Start engine and let fully warm up (temperature up to normal).
7 - Run engine at 2000 RPM or higher for about two minutes under no load
8 - Check that the inspection lamp (red LED) on the ECU goes on and off more than 5 times during 10 seconds at 2000 RPM.
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Checking the O2 sensor
The following procedure applies to all 1991 and up 240-SX models:
1 - Turn on ignition switch (do not start engine).
2 - Turn diagnostic mode selector on ECU fully clockwise.
3 - Wait a few seconds.
4 - Turn diagnostic mode selector fully counterclockwise.
5 - You are now in MODE-II.
6 - Start engine and let fully warm up (temperature up to normal).
7 - Run engine at 2000 RPM or higher for about two minutes under no load
8 - Check that the inspection lamp (red LED) on the ECU goes on and off more than 5 times during 10 seconds at 2000 RPM.
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colon cleanse
marriage counseling Indianapolis
#2
04-27-2011 | 02:28 AM
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Joined: May 2010
Posts: 19
If your check engine light came on and also when you go to a auto parts store and have them run the fault codes and says o2 sensors. you will know for sure that that's the problem...
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