Flat Spotting

[davekilshaw]

I have just noticed that whilst holding my celica at about 3500-4000rpm whilst moving, i seem to be getting a flat spot, if i hold it @ 75mph it feels as though it starts to dye then picks up again as you accelerate out of the rev range mentioned.

Has anyone else had or heard of this problem. The car has only done 10,000 miles and has had a new ECU installed about 2 months ago.

Any help appreciated!!!!!

Cheers ;)

[GTForbes]

what was the origional problem that caused the need for a new ECU?

[davekilshaw]

The ECU was changed a month before i bought the car, as i found the reciept for the ECU, done under warranty even though the car is over 3 years old.