Originally Posted by BobinDenver
Glad to hear that things eventually worked out!
I'm having NOx trouble myself. After the first fail, Toy Car Care suggested new CATs. Quoted me $3,300 for P,L+T. I'm going with Plan B (then C, D, and E) before moving on to full CAT replacement. This thread and some others have been very helpful for those plans.
Thanks in advance!
I may ask Treeroot if he wants to get together and make some youtube videos on how to troubleshoot each of the components involved.
I would check the EGR, EGR vacuum module and VSV before putting on cats.
All three are pretty straight forward to test and a lot cheaper than cats.
Do you have a green top or blue top EGC vacuum modulator? (The green tops have a filter that can get plugged)
3300 for cats seems very high. There isn't much to swapping them out. I ordered 2 from CruiserDan and it only took a couple of hours to swap them out.
(I had to cut off all of the bolts with a sawsall)