RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 there's no reason you couldn't. i would be curious to know where exactly the existing wire failed though, otherwise you may run into more failed circuits if others run through the same section of harness. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 there's no reason you couldn't. i would be curious to know where exactly the existing wire failed though, otherwise you may run into more failed circuits if others run through the same section of harness. Right, I understand that, but for now I'd basically like to be able to bypass it and run a second harness just for that one sensor, and then I can work my way back from the original one as time allows. It looks like all of the wiring behind that runs behind the upper intake, and I don't really wanna deal with that right now otherwise, since down the road I have some other projects calling for that anyway. If you have a diagram or info on where I could run this let me know! I could at least then drive the darn thing Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 run it where it makes sense..... shortest length possible while avoiding vibration prone areas, preferably away from heat and you're good to go. hiding it inside a loom is your call, could be hillbilly fabulous and use vacuum line in place of loom should you have a bunch of appropriately sized vacuum line laying around. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 : I mean what wires do I need to splice into Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 ..... they're in the diagrams i posted, i can't remember from how many days ago in the whatever thread. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 Oh ok, I gotcha. I think I'm gonna splice in just a ground first and see what happens. I assume the wire at the ECM will be the Sam colon as it is at the plug (yellow)? Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 ....... if you have an issue on circuit 410, then the ground won't matter. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 Can't I find a chassis ground to test? I was thinking that the ground is more likely to be in the wire run than at the ECM itself? Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 (Sorry Saar, I'm not super smart with wiring) Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 Can't I find a chassis ground to test? I was thinking that the ground is more likely to be in the wire run than at the ECM itself? (Sorry Saar, I'm not super smart with wiring) i'm confuz. IF circuit 410 tests bad(high resistance from PCM pin C16 to the yellow wire's pin on the coolant temp sensor connector, there is a break somewhere in it. if it tests fine(very low or no resistance), then the PCM is a problem. be sure to lightly tug/move the wire around while doing a resistance check since slight wire movement can reveal an intermittently bad wire. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 I've done the tugging with no change. I understand the problem as having a break in the wire that's a ground, so my temp solution was to ground it elsewhere Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 Alternately, if it's not the ground, I would wire in a new wire to the ecm Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 but if you ended up at the conclusion of 410 being the issue, that isn't the ground side.... 808 is the sensor's ground wire. grounding to places other than the PCM's sensor ground will work for testing, but i wouldn't do it permanantly.... something, something, PCM wants the sensors grounded to that pin for some reason. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 Well, I think I'm going to get a new pigtail, cut wires at the ECM, and just run straight off of that, leaving the stock pigtail intact for now. Sound like a decent temp fix? Quote Link to comment Share on other sites More sharing options...
RobertISaar Posted May 25, 2014 Report Share Posted May 25, 2014 that would work as a permanant fix as well if you route/support/protect the added wires. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 25, 2014 Author Report Share Posted May 25, 2014 that would work as a permanant fix as well if you route/support/protect the added wires. Ok, I was kinda thinking that as well. I'll probably do that tomorrow Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 26, 2014 Author Report Share Posted May 26, 2014 Alright, new pigtail behind block = nothing. New pigtail from ECM, getting readings! Right now I disconnected the battery to reset alllllll codes and whatnot. Gonna eat dinner, put her back together, and if it's a good working fix then I'll route some new (better) wires and call it a day Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted May 26, 2014 Author Report Share Posted May 26, 2014 All fissed! I ended up with a TPS code after that, and got mad for a second. Since I have a shop manual now, it saved me since my first thought was "I bet they share a ground". Sure enough, they do. Reconnected the ground to the harness and viola, no more codes! Quote Link to comment Share on other sites More sharing options...
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