Car jerks when accelerting

[crazysk8er1010]

Supra has been jerking when accelerating hard or quickly. If I keep my foot on the gas pedal and very slowly gain speed, the jerking won't happen. This also happens intermittently and regardless of what gear I'm in. I've already replaced the fuel pump and fuel filter.
Any other ideas?

87 Supra N/A, everything stock

Thanks

 

[hvyman]

Check your codes.

 

[crazysk8er1010]

Check your codes.

I just checked, and it's not throwing out any codes. Reading normal.

 

[Suprapowaz!(2)]

Change fluids in the pumpkin? Auto or manual? You're not giving us enough details of your setup.

 

[crazysk8er1010]

Change fluids in the pumpkin? Auto or manual? You're not giving us enough details of your setup.

It's a 87 Supra non turbo, manual setup W58, everything is all stock. I havent changed the differential fluid since I've had the car. I also don't hear the differential making any noises. Could bad differential fluid cause jerking?

 

[Nick M]

If I keep my foot on the gas pedal and very slowly gain speed, the jerking won't happen.

This is usually enrichment. That doesn't mean a pump is bad.

This also happens intermittently and regardless of what gear I'm in.

This is almost never enrichment. This is often ignition. You might have two problems. But I can not see it from here.

 

[super51fan]

I would start with new OEM Toyota plugs, wires, cap and rotor. IMO