Thread: Intermittent power loss - Td5

Tested out the maf, and it seems to be fine. Had it hooked up to a nanocom today courtesy of johntins, and there weren't any fault codes either. The only thing that caught my attention was that boost is topping out at 1.16Kpa, apparently. (1.16Kpa = 0.0116 bar, and 0.168 psi) This reading doesn't really make sense because the car isn't that slow. I mean, sometimes it feels like it hasn't got any boost, like the intermittent problem, but not all the time.

Anyway, after that I pulled the ecu out and checked the plug, which happened to be full of oil. While I'm definitely going to fix it, do think this will solve my problem? Shouldn't there be other symptoms?

Oil in ECU harness presents itself in lots of different ways, so could be part of the issue. If your boost is that low on nanocom, then I would also suggest pulling your MAP sensor out and giving it a clean, then recheck on nanocom for correct boost.

Ok, I'll pull the map out and have a look see.

www.discovery2.co.uk / Workshop /Injector Harness

This looks like a pretty comprehensive guide to the injector harness, so hopefully mine will be straight forward to. I've heard the some people just pull the harness out, degrease it and put it back in. But that just sounds like I'd be putting off the inevitable.

Yep, replace it. You can buy ones that somewhat fix the issue, I just bought an oil resistant sealant and filled in the plugs before installing it.

Originally Posted by JoeFriend

Yep, replace it. You can buy ones that somewhat fix the issue, I just bought an oil resistant sealant and filled in the plugs before installing it.

As in the plugs that go on the injectors?

I read that I should get the later model harness, but the latest I can find is 2001 onward. Is that it?

Also, cleaned the map. Hasn't cured the intermittent power loss but wow. I had no idea it was down on power.

Haha, well - glad to hear you sorted one issue and found another before it got worse!

RE sealant - plugs that go onto injectors and also where the harness meets the block. Push it right in there. Electric and oil resistant sealant for obvious reasons!

No idea RE the harness, I just bought whatever, wasn't even aware there was a difference.

You can contact Mario and Heather at Roverlord (on this forum and also have an eBay store) they will sell you one and are super easy to deal with. In fact, they will sell you most service items you will need of you plan on doing it mostly yourself so make friends with them early.

Originally Posted by JoeFriend

Haha, well - glad to hear you sorted one issue and found another before it got worse!

RE sealant - plugs that go onto injectors and also where the harness meets the block. Push it right in there. Electric and oil resistant sealant for obvious reasons!

No idea RE the harness, I just bought whatever, wasn't even aware there was a difference.

You can contact Mario and Heather at Roverlord (on this forum and also have an eBay store) they will sell you one and are super easy to deal with. In fact, they will sell you most service items you will need of you plan on doing it mostly yourself so make friends with them early.

Second the Mario and Heather endorsement.

Let me know if you want the Nanocom again. I'm around most of the time ATM.