MrT Posted March 13, 2009 Share Posted March 13, 2009 (edited) ok, so I got a new MAF and things are on the up and up. When I put it in I cleared the codes and got: 1002 (now not a problem I assume) 3004 -misfire on 4 7007 -Transmission Range Sensor Circuit Low Input 7008 -Transmission Range Sensor Circuit High Input So are these related to my bad MAF or are they something else. It was kicking into the fail-safe mode quite a bit and I don't know if the other codes are just relating to that or not. Edited March 13, 2009 by MrT Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 13, 2009 Share Posted March 13, 2009 Generally speaking, misfires indicate a bad coil on that cylinder from what I've seen. I don't think the trans codes have anything to do with the MAF. Link to comment Share on other sites More sharing options...
MrT Posted March 13, 2009 Author Share Posted March 13, 2009 (edited) ok, well I've pulled these codes before and they are always the same. They showed up as a group only when it went into fail-safe. And it's a 5spd if that matters for the Trans code. EDIT: ok so I checked the FSM (may should have done that first?) and it lists the Mass air as a possible cause for the miss. But I'm still clueless about the Trans codes. Edited March 13, 2009 by MrT Link to comment Share on other sites More sharing options...
MrT Posted March 16, 2009 Author Share Posted March 16, 2009 ok, misfire code is back... any help... anyone? Link to comment Share on other sites More sharing options...
Precise1 Posted March 17, 2009 Share Posted March 17, 2009 Distributor cap/rotor? Plug Wires? Plugs? Coil? Does it run, and how?? B Link to comment Share on other sites More sharing options...
MrT Posted March 17, 2009 Author Share Posted March 17, 2009 (edited) Cap and rotor look to be in good shape. It's always the #4 so I don't think it'd be the coil. Wire has no visible defects. connectors are still clean and with no corrosion so to speak of. Plug is in good shape. replaced them all ~16k ago. They all are wearing the same. Only happens at idle. If I keep it at 1k rpm it's fine. let it drop and after about 20sec to 1min at idle I get the flashing light and a miss code. Will stall out on cold starts but not when warmed up. Only had it knock once and it was on a cold start at about 2 deg F. Edited March 17, 2009 by MrT Link to comment Share on other sites More sharing options...
Precise1 Posted March 17, 2009 Share Posted March 17, 2009 Temporarily swap your #4 spark plug wire with another one of similar length fron another cylinder and see if the error code follows the wire or not... B Link to comment Share on other sites More sharing options...
morpheus Posted March 18, 2009 Share Posted March 18, 2009 Don't worry about any transmission codes till you get the engine stuff figured out. If you're driving under throttle and it misfires, it can trigger false trans codes. Link to comment Share on other sites More sharing options...
MrT Posted March 25, 2009 Author Share Posted March 25, 2009 UPDATE: the error code does not follow the wire... Link to comment Share on other sites More sharing options...
Precise1 Posted March 26, 2009 Share Posted March 26, 2009 Can you swap a coil?? B Link to comment Share on other sites More sharing options...
94extreme Posted March 26, 2009 Share Posted March 26, 2009 and the spark plug. Link to comment Share on other sites More sharing options...
MrT Posted March 26, 2009 Author Share Posted March 26, 2009 (edited) The only coil I have is the one in it. The plug looks fine to me (a little white on the electrode). Same as the rest except #2 which is more black than white. Just changed the plugs about 15k ago. Wires test within spec for resistance (~12.5k for #4, ~10.5k for #2[the ones I swapped]). My only thoughts left are bad rings on #4 (which would make sense with the stall out on cold starts) or a bad valve (which I would think would happen at all rpm and not just at idle?). I don't have a compression tester though. Any suggestions on brand etc? The only thing that would make sense to me for the coil being bad is that the #4 wire has the highest resistance. Really hoping I don't have a bad valve or rings. Injector maybe? Is it normal for just one to go bad (of course in the most god awful place to get at)? The only other oddity I've noticed is that after I shut off the car after a few mins I can hear a noise that is coming from the tank area (fuel pump?) that will turn on for maybe 5 sec and then shut back off. it'll do it ever couple of minutes or so and then no more after about 10min. I've got an extra fuel filter that I never put on but that just doesn't make sense to me since the miss is always on the same cylinder. Thanks for the help so far btw. Edited March 26, 2009 by MrT Link to comment Share on other sites More sharing options...
5523Pathfinder Posted March 26, 2009 Share Posted March 26, 2009 Your trans codes are strange. You may have a throttle position sensor issue. Look up NTB98-024a for more info. There is a countermeasure TPS available. Link to comment Share on other sites More sharing options...
MrT Posted March 26, 2009 Author Share Posted March 26, 2009 I was looking around when I pulled the computer and I think there is a sensor missing that should get pushed in when the clutch is all of the way out. It WILL crank without the clutch needing to be depressed. Link to comment Share on other sites More sharing options...
pktzygt Posted March 27, 2009 Share Posted March 27, 2009 I was looking around when I pulled the computer and I think there is a sensor missing that should get pushed in when the clutch is all of the way out. It WILL crank without the clutch needing to be depressed. Some trucks have a little switch on the dash called a "Clutch start override switch" to allow you to start the truck without the clutch in. It's a 4 wheeling thing. When I did my auto to manual tranny swap on my 1990, I never connected the wiring for that switch on the clutch and it hasn't caused me any driveability problems. Fuel injector, maybe??? Sorry, I am better at figuring out what the problem isn't than what it is. Link to comment Share on other sites More sharing options...
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