03 Y61 TB48 Throttle Body issues / part number and couple of questions

[Bloggsy]

G'day mate, Sorry to hear your 4.8 issues are not resolved. I had some issues with my O2 sensors a couple of years ago, the mechanic said that they were fine, but now and again they were fluctuating. I guess if the O2 sensors are feeding bogus info back to ECU it could trip codes to do with the TPS (just guessing, but sounds logical). I did have a TPS code come up once a few years ago (pre o2 sensor change) after a full day 4x4ing and it went into limp mode. But after turning it off for about 15 mins it was ok and never did it again. Anyway, I ended up getting new genuine O2 sensors from Nizzbits (Garry) and had them swapped over at the next service.

I'm not sure about a mechanic NOR that know 4.8 motors inside out. I take mine to Robson Bros in Welshpool for servicing these days, a bit of a hike for us NOR folk, but they've always done a good job. I've only had a couple of dealings (non-mechanical)with Joondalup 4x4 but they seem very helpful. Maybe go and have a chat with them as they are also a LPG specialist. Clive, who works there used to own a TB45 turbo, so may also know his way around a TB48???

Hope that's of some help.