Check engine light is on, any speed above 30mph it gives a flashing check engine light, acceleration feels bogged down, engine idle is rough and shakes the truck

SOURCE: I have a 1997 Chevy Cavalier with a 2.2 Liter

This sounds like a classic fuel system problem. Manually check your 1 & 3 plugs to prove /disprove the code. If they're OK, which I'll bet they are, check the fuel pump. If it tests good then you have a fouled gas tank, I'll bet. Especially if you live in the Northwest. If you let it sit with low fuel, the extra air space lets condensation form, causing rust and moisture in your gas. Usually changing the fuel filter will give you some temporory improvement if this is the problem. If it didn't then it could be your air intake not delivering enough flow to give it the proper fuel/air ratio. When's the last time you changed the air filter?

Testimonial: "Helped me rule out the fuel system."

SOURCE: the check engine light illuminates,

HI...
THis problem is caused for
Lost of correlation between ACELERATOR PEDAL POSITION
AND THROTTLE ACTUATOR MOTOR.
Because your car has no acelerator cable.
The morer probable is the Trhottle actuator motor come damaged. 90%. 10% the accelerator pedal position.
If you turn of the car it will work OK> for a few time.
But the Service engine soon. will stay on.
Yuo can go to at ANy ADVANCE AUTOPART, AUTOZONE or NAPA AUTOPART. They make a diagnostic free.
If not. I recomend get the car scanned for see exactly why the light come on. and make the right repair procedure.

OK>> I hope this help on your question...

Thank you for use fixya.

SOURCE: Rough idle, Car shakes, sputters and misfires upon acceleration

It sounds like you may have a problem feeding the fuel to your engine, I had the same problem with my 89 RS. All the 1989 model's fuel systems were recalled. I think you may need a new fuel pump. The fuel pump is located inside the gas tank in the rear of the car right under the rear axle. The fuel pump itself isn't too expensive, but with other small parts such as the electrical harness upgrade and fuel filter and the labor you should be looking somewhere in the $500 range. I hope this helps.

SOURCE: I have a 1997 Chevy Cavalier with a 2.2 Liter

Sounds like either the ignition module and or a coil pack is the culprit. I dont remember what year they changed it but if your is the one where the coil packs/module are located on the back of the motor they are a little tricky to get to. You need to remove dog bone mount and replace with a tool that will pull the motor forward so you can gain easier access...good luck. Hopefully yours are right on the top where they should have been since day one... :-)

SOURCE: Service engine soon light flashing on acceleration

It sounds like u got a coil pack going out. Alot of times when your engine is cold or when you arn't putting a load on it the coils won't fail. How ever when the engine reaches operating temperatures and there is load on the coils that is when they are going to break down. my advice would be to get a scanner and see what cylinder the missfire is at then swwap that coil to another cylinder to verify that the coil is defective. If it is purchase another with a new spark plug put it in and let it rip.