I am firmly in Camry Hell. The radiator cracked and let the steam out, the car got hot. never seized and would always turn over on the starter. Compression is 200-205 in 3 cylinders, 170-175 in #2. It runs but stumbles badly when under load, although it seems to rev freely. I have replaced both O2 sensors, the water temperature sensor up by the head, the fuel filter, the air filter, the radiator, removed the idle control switch, while cleaning the throttle body, put that back on once cleaned. Also checked the DC voltage at the throttle sensor, which gave smoothly graduating readings from .9 up through about 3.55 and back. I've pulled and reset the 15amp fuse for the EFI a number of times... it runs better but still stumbles badly. No water in the oil, and no metal in the oil. I'm running out of ideas and am hoping it isn't the brains for the EFI. Any ideas? I'm just about out of them at this point. 2.2 liter 4 cylinder Camry w the automatic trans. It has 209K miles, I am the original owner. It does not burn oil. I checked all 4 plug wires first with the timing light to see that they were firing, then pulled them and set them on the exhaust shield to physically see that they all fired as the motor was turning over. My compression test was done repeatedly with no spark plugs in any of the cylinders (spinning free). The ignition timing is in the ballpark, maybe off by a degree, never been a problem in the past. The exhaust is not plugged you can feel the pulses coming out the exhaust in back. Thanks, thought I'd provide all the info I could.
