Chevrolet Repair: GM 3800 94 buick regal, mass air flow sensor, mass air flow

Question
Mark, starts and idles ok in park, reves up ok with a little stumble, when driven while picking up speed it surges up and down without moveing the footfeet faster slower all along still picking up speed. At aprox 60mph runs smooth until you want to increse speed a little then it stumbles again. Changed the fuel filter problem is still present found a broken vacume ling on the fuel psi regulator changed it out still no change removed and tested the tbs sensor but have no guide lines to follow using an ohm meter, thanks for your time Darren

Answer
Hi Darren, the first thing I would do here is make sure all the tune parts are in good shape. NEW..plugs and wires. If these were changed and the problem is still there, then i would be looking at the mass air flow sensor. Be sure that there isn't any dirt on the screen to the sensor.

Let me know what you find


Mark