This morning when I drove my 94 Q to work, after a few blocks I notice the car is shaking abnormally on a red light. Then I notice the engine check light is on (Solid not flashing). First thing come to mind was the transmission I shift from D to N immediately and the car is still shaking.....nothing changed.

I took my chance to drive the Q back to the garage, pop up the hood and the engine itself is shaking vigoriously......the car wasn't overheat the temp meter is still at 3 o'clock sharp.

What are the potential problems? Transmission? Injector? MAF? Fuel realated? Has anyone have this kind of problem before?? Please help me out!!

What have done to the car:New fuel pump (3500 miles old)TB and MAF cleaned like 9 months agoOil changed 500 miles ago (Mobil 1 Syn 0-40)BG44K 500 miles ago (right after oil change)

If anyone has any idea please chip in!! I try to search but I didnt get anything.....

Classic failed injector, check ECU codes for confirmation.

Yep, ohm your injectors!!!

Ok so is that a job that the down the street mechanic shop can do it or should I take to someone who knows Q45 to work on it? (Jerry Tucker is closest, 100 miles)

And plus, if one of the injectors failed I just need to replace one injector right? What else can I do with the changing of injectors? Cleaing the plenum? change hoses?? Thanks!

Yes to all. Especially taking it to JT. Most likely, he can diagnose other upcoming failures. Preventative maintenance knowledge is what most grease bay monkeys lack when it comes to a Q45.