Recent content by Paul D63

Just to finally close out this thread, I thought I'd update those who contributed and let you all know how the matter was finally resolved. I had no luck whatsoever finding another immobilizer ECU with a matching key. The only offer I got was from a guy here in the UK who breaks 80s, but he...

Absolutely! Agreed 100%. Glad you've enjoyed the thread too. There were parts where I wasn't finding it particularly enjoyable! However, I'm cool with it now that we've got to the bottom of the problem. Just gotta find a matching ECU & key now and it's sorted.

That is a very generous offer, thank you. Let's hope it doesn't come to that, but it's very reassuring for me to know I have someone on-board who understands the electronics involved should I run out of options for any other kind of solution. Yes, of course, I also realise that if the owner of...

Right, that confirms what I thought. Unfortunately, the aforementioned electronics repair guy doesn't seem very keen to get involved for whatever reason. Went to see him earlier and showed him my original ECU and discussed what we had planned, as far as the idea of removing the chip and...

OK, got that. But as both ECUs I have here (and the one on eBay) have exactly the same part numbers, is it a safe assumption that they're identical from a hardware perspective, and the only difference would be in the programming of the EEPROM. Would either of the other chips in there contain...

I've just returned from the locksmith's after asking him to program the chip in my 'new' key to the same settings as the good borrowed key - and having tried that one, the truck starts (with the borrowed ECU plugged in, of course). So at least now I have a key that I can put into my ignition...

OK, well based on the last few posts, it sounds like a bad idea to let the locksmith near the borrowed ECU if there's a possibility he could alter or damage something by attempting to read the chip. Not going there! I don't really want to consider this next option either, but... theoretically...

Wow! That is a very comprehensive post, and I really do appreciate you taking the time with this. I kind of understand the theory of what you're talking about there, but I'm not confident of my ability to successfully carry out that process. Those pins on the chip are pretty small, and with the...

sbman - photo of the ECU internals below. This is the borrowed one, but I imagine they're identical from a hardware perspective, the only difference being how the chip is programmed? The chip he read was the one in position 'IC2' on the board, the one to the top left of the much larger chip at...

Thinking about that previous post... maybe it's not such a good idea to let him near the borrowed ECU. If you think there's a chance something he's doing could be causing my problems, then I certainly don't want to let him do the same thing second time around. At least, as things stand, I can...

Yes, that's what worries me. He assures me that nothing he does alters anything inside the ECU, and that he simply reads the chip. I saw the tool he used to read the chip - it just looks to piggy-back onto the chip and connect to its pins. I do know which chip he read, and I'll post a photo of...

Some more developments today. As Cruiserdan suggested, and I was in agreement, neither the transponder coil nor the amplifier are coded. First of all, I removed the borrowed coil and refitted my original one - still started and ran fine. Next, did the same with the amp - still ran. So now we...

That's an understatement! I was well chuffed, if that makes sense over there? Extremely pleased, shall we say. I will, of course, update my findings once I get to the bottom of exactly what was the culprit - may help someone else in the future.

Well... just as I was beginning to think this thread was as dead as my truck, my 80 lives!!! YEEEHAAA!!! I'm still in the tunnel as yet, but a lot closer to the end now, and at least the light I can see from here isn't simply from the headlights of an oncoming train! For those that may be...

Dave 2000: I should add a couple more answers to questions you posed: Vehicle been off the road around three years perhaps, but only maybe a little over a year since it was last running fine, when I started it and moved it to where it currently sits. Fuel is fresh - put some in earlier in the...