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Electronic Fuel Injection Wiring Harnesses: Good vs Bad
This is my site Written by wolfems on September 9, 2009 – 11:12 pm

Now, I could have called this post “Electronic Fuel Injection Wiring Harnesses – Good Vs Evil”.  And I’m sure many of you would appreciate where I am coming from.

But I’m talking more about making a decision when looking at a harness that is already installed, as to whether it is worth trying to repair that harness and make it good or if it is better to wipe the slate clean and start with a fresh new harness.

A lot of time has been used (wasted) trying to find and fix problems in any number of harnesses, and in the end, there are times when you still end up having to remove the current harness and start again.

Here are some pointers as to when it might be time to remove what is currently there and start again:

1. When you unplug injector, ignition or other plugs on the engine, and you see the green of copper corrosion around the pins.
2. When the previous installer has used sub standard connectors like scotch-locks or a heap of bullet connectors to join new wires into the loom.
3. When the original loom is getting old.  Like more than 15 years old.  Many vehicles like turbo RX7′s from the 80′s and early 90′s, or the Z32 300ZX that is well known for having a “fragile” engine bay harness and connectors.
4. If there has been an engine bay fire, or if there has been a short in the loom, and a section of the wiring has melted.

There are others, but I hope you get the drift.

The bottom line is that a GOOD loom will not have these problems.

I’m not saying that you should remove your loom and start again, unless there are problems, like the ones above, where you will end up chasing the fault around and around, time and time again.

We have seen many examples of problems like the ones above.  The car has been to several workshops and no one has been able to fix the problem because it may be intermittent, or it may be that they fix the original problem, but since the harness is old and starting to break apart, they introduce a secondary issue, and so on. Our experience tells us that it is sometimes less expensive, and you will be much happier in the long run to remove old or badly installed wiring and start afresh with a quality, well terminated wiring harness.

We don’t like seeing anyone frustrated with their car.  And we want you to get all of the enjoyment possible from your vehicle.  As far as looms and harnesses go, Quality always wins out.

PS:  Wolf Motorsport can quote on any type of wiring harness.  We can manufacture looms in-house to your specification.  If you’d like to talk to Wolf Tech Support about having Wolf make your harness, drop us a line at wolfemail@wolfems.com.au.

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2 Responses »

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