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Well I spent all this afternoon fitting the supposed "improved" injector loom I got my brother to send me from the UK.
In a nutshell, the product code shown here isn't an exact match, and this arvo was one of my more "trepidous" efforts.
Even though it came from a VW dealer, it appears to me that it is an Audi A4 2.0 TDI specific part, and there were several differences. I got it to fit, and more amazingly, to work first go, but even though I took a video of the process, this isn't something I recommend people try for themselves, certainly not unless you can get an exact match part.
The differences were the actual injector plug ends, the wiring colours, the plug key-ing, and the actual plug pin orientation. I had to swap the newer loom injector plugs back to the old version ( the blade connector was identical, just the holder was different ) and the wiring colours were *close* but certainly not the same, and I spent quite some time tracing wires and working out what the heck was what - and then checked it again - quite nerve-wracking to be messing with the injection loom when it's dogey already.
On that, whilst the old wires did indeed look like the had sat in oil for 80 thousand kms, there was no sign of cracking, and I couldn't get the old loom insulation to crack, it was harder, but not so much that it would break just yet. The colours had definately faded, and the newer injector wire looks a little beefier, but both said 200 degree C on the insulation, and it's a definate feel good to have new wires in there.
The glowplug wires and plug ends were identical so that part was easy.
The keying in the new loom plug was a bit different, and I had to take to the new plug with the dremel to make it fit. The old plug had a key at 2 o'clock and 4 o'clock, whereas the new one was missing 2 o'clock, and had 10 o'clock instead. Not anymore.
Finally the most nerve wracking bit was injector 3 and 4 had their plug pin output reversed on the new loom, so I took a chance and changed the two plug pins around to match the old loom, and it's odd that all the rest of the plug wiring was pretty much identical. The old loom did have two injector earth pins ( two injector earths into each ) whereas the new loom only had one ( all four into one ), but I didn't see that as much of a problem, and perhaps this is the "improvement" in that there is only one earth running to the plug, instead of four on the old setup - less chance of a short?
I sat in the car, held my breath, turned the key, and it ran just fine. Went for a drive and so far so good, all as per normal. Pics to follow, tomorrow probably, need to get them off the new camera I'm still getting my head around.
In a nutshell, the product code shown here isn't an exact match, and this arvo was one of my more "trepidous" efforts.
Even though it came from a VW dealer, it appears to me that it is an Audi A4 2.0 TDI specific part, and there were several differences. I got it to fit, and more amazingly, to work first go, but even though I took a video of the process, this isn't something I recommend people try for themselves, certainly not unless you can get an exact match part.
The differences were the actual injector plug ends, the wiring colours, the plug key-ing, and the actual plug pin orientation. I had to swap the newer loom injector plugs back to the old version ( the blade connector was identical, just the holder was different ) and the wiring colours were *close* but certainly not the same, and I spent quite some time tracing wires and working out what the heck was what - and then checked it again - quite nerve-wracking to be messing with the injection loom when it's dogey already.
On that, whilst the old wires did indeed look like the had sat in oil for 80 thousand kms, there was no sign of cracking, and I couldn't get the old loom insulation to crack, it was harder, but not so much that it would break just yet. The colours had definately faded, and the newer injector wire looks a little beefier, but both said 200 degree C on the insulation, and it's a definate feel good to have new wires in there.
The glowplug wires and plug ends were identical so that part was easy.
The keying in the new loom plug was a bit different, and I had to take to the new plug with the dremel to make it fit. The old plug had a key at 2 o'clock and 4 o'clock, whereas the new one was missing 2 o'clock, and had 10 o'clock instead. Not anymore.
Finally the most nerve wracking bit was injector 3 and 4 had their plug pin output reversed on the new loom, so I took a chance and changed the two plug pins around to match the old loom, and it's odd that all the rest of the plug wiring was pretty much identical. The old loom did have two injector earth pins ( two injector earths into each ) whereas the new loom only had one ( all four into one ), but I didn't see that as much of a problem, and perhaps this is the "improvement" in that there is only one earth running to the plug, instead of four on the old setup - less chance of a short?
I sat in the car, held my breath, turned the key, and it ran just fine. Went for a drive and so far so good, all as per normal. Pics to follow, tomorrow probably, need to get them off the new camera I'm still getting my head around.
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