Sorry for the long delay in replying. Got a code 71 - egr system operation malfunction. Tested system and had to replace the egr valve. Check engine light came back a few days later and drove me nuts for a while since testing all the other components tested o.k.
Finally tucked my tail and went to a friends mechanic that said the vsv is usually the problem. Told him that it tested o.k. and left the car in his care. He called back 2 days later saying he replaced the vsv and no more check engine light.
$75 well spent. Passed emissions test with better than average results. Fuel economy jumped from 230 to 300 miles per fill up.
I humbly ate crow and re-positioned myself on the ladder of success. Damned stubborn bullheaded Aries...