buckwheatLA Posted July 5, 2010 Share Posted July 5, 2010 i have a 97 pathfinder and everytime i get to a certain rpm, usually either going up a hill, or passing someone, the engine surges and seems to power out at 3300rpm. if you pump the gas a couple times it well jump up to 4500rpm, really not sure what is going on, any suggestions would be great Link to comment Share on other sites More sharing options...
Tungsten Posted July 5, 2010 Share Posted July 5, 2010 an o2 sensor is bad Link to comment Share on other sites More sharing options...
skulptr Posted July 5, 2010 Share Posted July 5, 2010 and CEL codes? Link to comment Share on other sites More sharing options...
buckwheatLA Posted July 5, 2010 Author Share Posted July 5, 2010 no engine codes that i know of, but i am going to take it in tomorrow and have it scanned Link to comment Share on other sites More sharing options...
180sx Posted July 7, 2010 Share Posted July 7, 2010 you have a 97? Link to comment Share on other sites More sharing options...
buckwheatLA Posted July 11, 2010 Author Share Posted July 11, 2010 you have a 97? yeah, it is a 97, why? is there a problem you know about with the 97 Link to comment Share on other sites More sharing options...
Sick98Path Posted July 25, 2010 Share Posted July 25, 2010 I am having the same issue out of no where. After I have been driving for about 20 minutes the truck starts miss firing around 3300 and up, only after it runs for while... Meaning its at full temp and driven for while before it happens. I think its the fuel pump. I put my timing light on it and it never lost spark while it was breaking up which means its not spark. It has a new fuel filter plugs and wires so that's what makes me think fuel pump. Any help would be very appreciated Link to comment Share on other sites More sharing options...
MY1PATH Posted July 25, 2010 Share Posted July 25, 2010 Idono if the 3.3 ecu varies from the 2 3.0 models but for the smaller, 28~3,000 rpm is the transition point from MAF control to o2 contol. This can indicate an o2 sensor poblem which rarely throws a code. Or 'safemode' has been activated which tries to prevent reving over that point. My ecu went into safe mode when My injectors failed, but other things may cause it. No codes for safe mode, you just have to correct the causing flaws whic hopefully will throw codes. Link to comment Share on other sites More sharing options...
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