Hackworth Posted March 23, 2015 Share Posted March 23, 2015 While driving my '97 to work, I stopped at a stoplight, then went to go when it turned green and the Pathfinder jerked, then I couldn't get it past 20 or so mph. I parked it immediately, and went to start it approximately 45 minutes later. No start. Several hours later, started up and ran fine. Drove it home, drove it back to work, and it started stumbling after 6 or so miles. Now, it's got a rough idle and will occasionally stall. I've replaced the fuel filter and fuel pump, no change. Any ideas? Thanks! Link to comment Share on other sites More sharing options...
Bubbley11 Posted March 24, 2015 Share Posted March 24, 2015 Man it sounds like an maf problem. Mine did the same thing, and seems to be happening to many people recently. Link to comment Share on other sites More sharing options...
Rebelord Posted March 24, 2015 Share Posted March 24, 2015 MAF or distributer. Sent from my Moto X Link to comment Share on other sites More sharing options...
fixinto Posted April 8, 2015 Share Posted April 8, 2015 (edited) ^ would say spark or false air report. Pop the cap off of the Dizzy and check for the red dust. Also check for a cracked boot on the air tube after the maf. I would let the truck cool completely, take the maf off, clean it with a q tip and maf cleaner or alcohol "90 percent is best" be sure there is nothing on the wire, and be very gentle when u clean it. Running that bad it would almost have to have a fleck of something on it that you can see easily. if cleaning it doesn't help, use a multi meter or something like torque to see if it is functioning properly. Pat Edited April 8, 2015 by fixinto Link to comment Share on other sites More sharing options...
Precise1 Posted April 8, 2015 Share Posted April 8, 2015 Sounds like a warm engine/closed loop condition. Have you checked the OBD2 system for codes? B Link to comment Share on other sites More sharing options...
jyeager Posted April 10, 2015 Share Posted April 10, 2015 While driving my '97 to work, I stopped at a stoplight, then went to go when it turned green and the Pathfinder jerked, then I couldn't get it past 20 or so mph. I parked it immediately, and went to start it approximately 45 minutes later. No start. Several hours later, started up and ran fine. Drove it home, drove it back to work, and it started stumbling after 6 or so miles. Now, it's got a rough idle and will occasionally stall. I've replaced the fuel filter and fuel pump, no change. Any ideas? Thanks! I'm leaning towards a spark problem. You couldn't get it to start after sitting for 45 minutes, I'm going to guess that was open loop then, but can't be sure. You can verify it by forcing open loop. You could disconnect one of the sensors needed for closed loop operation, like the coolant temp sensor, the MAF sensor... You will get a trouble code, but the truck should stay in open loop for you. If all is fine then, you can be sure it's a sensor problem that pertains to closed loop operation. But if you still have the stumbling, stalling, or failure to start, you can be pretty sure it's spark related (but can't completely rule out fuel pump). Link to comment Share on other sites More sharing options...
Hackworth Posted April 12, 2015 Author Share Posted April 12, 2015 I replaced the MAF since it was only $30, that didn't help. I just put in a $90 distributor from Amazon. Problem solved! Thanks all! 1 Link to comment Share on other sites More sharing options...
Rebelord Posted April 14, 2015 Share Posted April 14, 2015 Remember you can sometimes pull one from a junkyard ~$30 and rebuild yours. Mine kept shorting out the coil to the body. Link to comment Share on other sites More sharing options...
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