92 Subaru Legacy AWD 2.2L Auto Trans 250,000km
I have been having problem with it dying on heavy acceleration and going uphill.
On flat and cruising the car is fine. It idles nice and will accelerate nice and smooth for short distance. Going uphill the car is under load, it will start to missfire and then will start to loss power and then die. I then pull over ,let it sit for 1-2 min and it starts, it also idles smooth. But the next hill the same thing. I was getting a lot of detonation from the engine before it would die ,but I changed the plugs. I put in plugs that where one step colder. One other thing is that when the car is cold ,it seams to run better.
Other thing I have done.
-Sea foam
-Water injected into engine
-Plug wire
-TKO injector cleaner( not the cheap junk)
-Fuel pump
-Knock sensor New
I am thinking MAF. sensor, I will pick up one from the wrecker.
Help Please any ideas.