GAS SMELL
06-04-2008, 01:03 PM
#2
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06-06-2008, 10:01 AM
#9
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Get this resolved ASAP.......and why would you ignore the fault code, particularly with an apparent rich condition. This is an O2 sensor code but it can be caused by other engine operational issues. If you have no obvious vacuum leaks or holes in the exhaust, you need to get it hooked up to a scantool to observe the O2 sensor readings and response etc. Has the SES light ever been on?
06-06-2008, 11:05 AM
#11
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Sorry, it is a "cat. code", but triggered by the O2 sensors. But as I tried to explain, the root cause may actually be one of several things. This particular fault code can turn into a can of worms and it really is an advantage to get the car hooked up to a scantool for troubleshooting, and to follow the FSM step by step. You do not want to just start throwing parts at the car. If you have no SES light on and no other obvious problems as I already mentioned and nothing has been done to the car recently, then my gut tells me that it could be the MAF, but I'd just be guessing.
Last edited by P. Samson; 06-06-2008 at 11:12 AM.
06-06-2008, 12:13 PM
#13
Originally Posted by bluebriscoe
The ses is on the code is P0420 but that should not make the car smell like gas on the outside.
Sorry, it is a "cat. code", but triggered by the O2 sensors. But as I tried to explain, the root cause may actually be one of several things. This particular fault code can turn into a can of worms and it really is an advantage to get the car hooked up to a scantool for troubleshooting, and to follow the FSM step by step. You do not want to just start throwing parts at the car. If you have no SES light on and no other obvious problems as I already mentioned and nothing has been done to the car recently, then my gut tells me that it could be the MAF, but I'd just be guessing.
06-06-2008, 11:11 PM
#15
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06-07-2008, 03:56 PM
#20
06-09-2008, 10:32 AM
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06-09-2008, 03:15 PM
#26
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06-09-2008, 06:20 PM
#27
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We've tried to explain to you.......your "gassy"/rich mixture smell is not caused by a precat or cat. Neither is your poor fuel economy. There is a problem with the basic engine fuel metering/emissions control system. I think that you are confusing a basic fault "code scanner/reader" with a "scantool" such as Nissan's "Consult ll", or what is commonly called a "generic scantool" that are made by companies like SnapOn, Actron, SunPro etc. They usually start at about $350 and run up to several thousand. A "scantool" has the capability to read (and store) live streaming data as seen by the ECM from all the different sensors (such as the O2 sensors) and to monitor all the ECM data related to engine operation/performance. It's not as simple usually as just coming up with a fault code. There is a fairly involved step by step procedure in the FSM for troubleshooting this fault code and actually determining what is the real problem.
Last edited by P. Samson; 06-09-2008 at 06:23 PM.
06-11-2008, 08:46 PM
#31
Have you visually inspected the car for any small leaks on the fuel lines including the fuel injectors, fuel rails, fuel lines, gas cap, all related hoses, fuel canister, etc...You may have a real fuel leak...You may wanna invest in a portable fire extinquisher in the meantime. Hope you can find the problem!
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