Discussion in '2nd Gen 1991-1996 1.9L SOHC' started by Mrbwin, Dec 6, 2019.
Clogged cat/leaky EGR?
sorry i missed this earlier... does the bogg only happen exactly at WOT, or leading up to it?
The first thing I would do is disconnect the MAF. It will ignore MAF readings and if the MAF is bad the car will actually run much better with it disconnected. Make sure you have no leaks, cracks, between the MAF and throttle body. Make sure the air intake and filter are not obstructed from a critter making a nest. Check fuel pressure under load. Make sure throttle position censor reads full throttle. The easiest way to do this is hold the gas pedal down when trying to start it. It should not start because the injectors shut off in this scenario to clear out a possible flooded engine.
Just what I wold do in minimal time and tools to help narrow it down. The only tool you would need is a fuel pressure gauge.
If none of this helps than I would look into possibility of more rare stuff like plugged exhaust/converter or timing issues.
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