Quote:
Originally Posted by 80stech
It's not really clear on your post but you need to 'monitor' the fuel pressure under load when the problem happens to rule that out. Spark is the next most likely thing, switching coils doesn't always rule out the coils or a spark problem. A weak cylinder, for whatever reason, usually needs more spark. Maybe try reducing the plug gap and see what that does.
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Yup - thought of that (monitoring during load) - admittedly, I did not have the fuel pressure gauge rigged up when I did the test drive, only after the ECU turned off the injector did I check fuel pressure again. I guess I can rig up with gauge carefully and try monitoring it under load.
The problem ONLY happens once I get the revs up over 3500 RPM while accelerating. If I drive the car around and keep revs below 3500, everything seems normal.