So I have 96 4x4 5speed with 250k original motor it was running just fine till I installed a k&n intake on it and it started idling high around 1500 to 2500 and it started making a ticking noise by the battery figured out it was the vacuum switching valve so I replaced and stopped but the rpms are unstable and it does not throw a code and I just found out it has not cat? FML! Help!
