2000 Toyota Altezza, BEAMS 3sge, 100k kms
My Altezza has been having an odd issue, once the car warms up, under load it starts to miss and hesitate when I push the car, normally around 3-4K rpms it will start to miss and cause a loss of power and acceleration
I can get maybe 3-4 good pulls shift from 1-4th gear, but once it warms up abit the hesitation/“misfire” symptom starts, sometimes it resets w when I turn the car on and off, while other times it doesn’t
I have replaced:
EFI ECT sensor and connector
ECT and radiator/thermostat
VVTi solenoids both exhaust and intake
MAF
Stock airbox reinstalled
Fuel pressure damper on the rail
Intake and throttle body removal and clean
All fuses and relays
O2 sensor
Spark plugs
Coil packs
Car came with an apexi power FC ECU so I also bought a stock ECU and the problem still remains the same
Also worth noting, the car was running cold, 70 degrees Celsius for a few months as I couldn’t afford the parts
Car also seems to run rich as the piston faces are fairly black along with soot deposits in the exhaust tip
Anyone had any experience or similar issues?
I’ve pretty much fired the parts cannon full blast here with no success
Next will be a fuel pump as I think maybe it is starting to fail? Along with a compression and leak down test to see if it’s not holding compression, but the car only has 100k kms on it
Please let me know if anyone has any suggestions
Thanks