This is just a "show what I found", so here's the N80 I replaced this morning. I tested the new N80 before installing it and the new N80 held vacuum 100%.
There were no fault codes but it has 154k miles on it and has a small fuel additive showing in the fuel trims;
https://www.youtube.com/watch?v=wZ9S...ature=emb_logoAnyhow, the resistance was just 17.8 ohm on this N80 I removed. The resistance spec is 22 to 30 ohm. So, even though it leaked a bit...it also was likely opening less and causing it to run a bit lean and why my LTFT (partial/multiplicative/off idle) was 7 to 8%. A bit of time and then a data log may show this to be true. I will post more on the fuel trims after I log it.
