Please fill out the following to ask a question. MAKE:Buick MODELark Ave YEAR:1989 MILES:205,000 ENGINE:3.8 V6 DESCRIBE ISSUE....Engine stumbled 2-3 times and died at stop signs and check engine light appeared . My old OBD1 OTC scanner pulled code 34 ( No MAF signal for over 4 seconds while engine was running) It also showed it always running lean (instead of lean- rich- lean-rich as normal). I cleaned the contacts and MAF with electronic cleaner, but there was no change. Then I installed a used, but known good MAF from another running car with identical great running engine. I did not want to purchase a new one for trial since they cost $100 or more. Plus known good used is always better than unknown new . I cleared the code memory, ran the engine, but for the first several minutes the check engine light flashed about once every second and my scanner said NO DATA. But after several more minutes, perhaps after closed loop ???, everything cleared up and car ran fine and no check engine light and no code 34. I have never experienced that flashing light situation before. Is that normal or should I be expecting a future problem?