My problem started when I changed the air filter and cleaned the MAF and TB. I inadvertently left the small hose off the rear of the intake (it goes down behind the engine) for about a mile. Car ran bad, threw mucho codes later. After re-connecting the hose and clearing the codes, CEL came back with P0171 and P0174. I've researched here, checked for intake and vacumn leaks over and over, replaced PCV valve and fuel filter (it was time) to no avail. Before I start replacing other stuff, does anyone have any ideas of where to look for the problem. I also recently replaced the plugs with Bosch +4. The car runs great, idles fine. Throttle hang may be a tad worse but not bad. Got to clear those codes so I can get the damn thing smogged for DMV. It must be something I did when I took the intake apart.
Thanks. This is a great site.
