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Critter chewed thru wire connected to vsc / nox sensor. Was told need to install complete new wiring harness! 3500! can't I splice the wire witha shielded cable connector to fix the problem?

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  • lauriesrwe Nov 12, 2009

    Thanks for the help!

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  • Toyota Master
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Yes you can.Just make sure the wire is insulated,and shielded,and use heat shrink over the connectors,and waterproof connectors,maybe even plastic tie the wire up secure,and you will be alright.

Posted on Nov 12, 2009

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Hi, if the terminals are good and the wire is just broken along the way, it is best to just cut the old wire out where it's bad and splice new wire in with solder. If the terminations are the problem, then you will need a new or used connector. A new harness is very expensive to buy and install, especially for the computer. Please let me know if you have more questions.

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My check engine light just came on and I took it in. I was told rats chewed thru my ignition coil. To replace it they are charging me $671 for the part alone!! I feel like this is outrageous and I'm...


I've been in this business long enough to believe that nothing is impossible. That said, I've seen many wiring harnesses chewed up by rodents, but never hard parts like a coil. If a harness has a few wires chewed, most shops will just repair it but if there is extensive damage, likely they are replacing the entire thing. Depending upon which harness needs replacement, the cost can be expensive both for labor and the part itself. That would make more sense. Sure there isn't a mis-communication and that's actually what the shop is doing??

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I have a 1995 honda accord v6 and my rpm gauge is crazy and my car seems like it wants to stall out when i'm driving.


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Depends on what cable is fried, but splicing large cables carrying a lot of current is not usually a good idea unless it is unavoidable. Improper splicing and corrosion over time can cause resistance at the splice, and a voltage drop over a splice can compromise operation of the car and cause the cable to overheat and become a fire hazard. However, if done properly and other wires in the harness are not damaged, it might be an option.

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I purchased a 1994 Cherokee Larado with a 4.0 6 in it that had been sitting for about two years un started. Animals had nibbled on wiring in various places including fuel lines, crank position sensor and...


Unless you are really lucky I don't think you will meet your deadline. One wire out of place or dis-connected can cause all kinds of problems. I'd begin by checking every fuse in the vehicle, especially those in the power distribution center. Often if a sensor is shorted one of those fuses will fail.
Your next project is to get a good wiring diagram (chilton is best for that) and beginning at the computer main harness connectors, you will need to test each wire by using an ohmmeter, (battery disconnected) testing continuity between each connector pin and writing down each sensor connector pin location that shows continuity for that pin, then comparing it to the book diagram.By doing that, you will develop a complete picture of where each important wire in the harness goes. I'd do a visual inspection of the harnesses first (I know you did that) making sure the O2 sensor harnesses are intact.
Since you have a new MAP sensor, put it on. Also, remove the idle control motor next to the throttle position sensor and clean the passage going to it and the control plunger. Don't turn the plunger and don't loose the small "o" ring though.
Default for the fuel regulator is full open and that generally will cause the engine to run rough with black exhaust (very rich mixture) If you don't see that it's probably OK.
I have only one sendable diagram...http://www.scribd.com/doc/18999822/Jeep-Wiring-2 That may help you a bit.

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Hello, Im trying to rewiremy transmission on a 92 GMC 3500 vandura box van. My don chewed the wiring that plugs into the transmission The plug has 11 wires coming out of it but some of them that he didnt...


Hello tnvolsfan32,

Use the FREE drawing available on the
BBB Industries site to trace out your wiring...
BBB Industries Premium Alternators Starters Power Steering Products

First put the wires together that
DO PERFECTLY MATCH... Then go
back to the drawing and find out what
DEVICE, CONNECTOR or PLUG got
disconnected or swallowed.

Generally wires DON'T CHANGE COLORS
in a wiring harness run... So you definitely
need to look for a LOGICAL EXPLANATION.

Registration is required... these are real
wiring documents...

Each time you return from a WIRING page
make sure you have not
defaulted back into TSBs...
(technical service bulletins)... While usually
quite useful... they don't begin to address any
WIRE-EATING-DOG problems...

If you get confused comment me back...
I can recommend some great tools to help
SPLICE everything back together

Tone Tracer being PRIMARY
Extech TG20 Wire Tracer and Tone Generator Amazon com

Helpful hint: wire must be ISOLATED to trace correctly
(pulled fuse or chewed through works).

Hope this helps

Carnac the Magnificent

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Check the wire harnesses on top of the transmission for any signs of open plastic casing. You may of had a mouse or some other critter chew their way through some wire insulation which is causing a short to ground,,,, or a short to power. If any are found, spice wires back together ( same colour wires ) and try speedo again.

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