| Above spec or your gage is reading high, if not seems excessive carbon could be an issue? "Zero vacuum leaks" What vacuum reading are you getting at idle and 2000 rpm? Look here for interpretation of vacuum readings: [ http://www.atlanticz.ca/zclub/techtips/vacuum/ ] "O2 sensors cycling between rich and lean at 2k RPM" At least they cycle but what are the voltage low and high readings? Should be about 0.1v to 0.9v. They could be cycling around 0.5v and that is no good and indicate to replace the O2's? I think(?) the 96 has an additional O2 besides left and right bank, have you checked it? Have you properly adjusted the TPS per the following procedure: [ http://z32.wikispaces.com/Throttle+Position+Sensor ] Have you checked the coolant temp sensor? Have you checked the condition of the air flow sensor for contamination? Clean with electrical connector spray and drip dry. Look into the condition of all the connectors for any corrosion especially at the Injectors, TPS, coolant temp sensor and air flow meter. I pulled as many as possible cleaned and filled with dielectric grease. Look for bad grounds including the batt posts, they can also be cleaned and dielectric grease applied before
re-connection, may not help the idle but will insure less issues with batt. Look here in Tech for idle cures: [ http://www.z-car.net/ ]
ZUL8TR in Orlando,FL |
