Not familiar with that, could be though because I had some vacuum issues in the beginning. Do you know what that would be called?
It idles perfectly all day long and revs strong and smooth in Park and neutral. It’s just when you put it in drive all the fun starts..

I checked on distributor this morning and no vacuum lines going to it. Plus the van has a Vortec engine, it says it on the valve covers, so I’m thinking that’s all controlled by ECU on these? Thanks

No I haven’t read codes in a while. I have a code reader but it’s a crappy cheap one with the 3 red lights and it’s really hard to figure it out. I’ll try that today

I agree. I’ll have to order one tomorrow. It can’t be too much harder to find now, there are only a handful of sensors left I haven’t already replaced!

So I’ve tried a lot of other things today, unplugging sensors etc and test driving.. It seems to drive almost totally normal when cold, but as soon as it’s up to op temperature it runs like crap.. popping spluttering no power and almost like it’s constantly in overdrive. The other weird thing, when it’s cold and I’m driving it, it’s like the transmission is shifting backwards?? It will shift into lower gears when you slow down and higher gears when you speed up... Has to be a trans issue as well surely?
Anyone want to buy it? I think I’m at my wits end!!