2gsx2tame
Probationary Member
- 18
- 0
- May 9, 2003
-
IdahoUS
Hello, the car is a 1999 Eclipse GSX. I've been having an issue with mulitple cylinder misfires and a check engine light code "P0300".
When the engine is still kind of cold and while driving, the car will suddenly loose power and the motor starts shaking/vibrating. I'll press in the clutch and it will stop the misfiring usually. This usually happens when I am in 3rd or 4th gear at around 3000 rpm. The problem shows up with or without being under boost and seems to happen at random.
The problem first started showing up last summer (2017), about two weeks after changing the timing belts. Does anyone know what my next step should be in trying fix this? Please take a look at the following history of what's been done to the car; before and after noticing the problem. Thanks for any help!
2015
Replaced Fuel Filter
Replaced Spark Plugs
Replaced Slave cylinder
Replaced Master Cylinder
Replaced Clutch Fluid Line
2016
Replaced Cam Angle Sensor
2017
Replaced timing belts (both timing belt A and timing belt B)
Replaced Crank Position Sensor
Replaced Water Pump
Two weeks later - First noticed P0300 CEL
Found Boost/vacuum Leaks
Replaced Upper Intercooler Piping
Replaced Blow Off Valve
Replaced Seals inside Throttle Body
Replaced Throttle Body Gaskets
2018
Replaced Spark Plugs - again
Replaced Spark Plug Wires
Replaced Clutch
Replaced Before Catalytic Converter O2 sensor
When the engine is still kind of cold and while driving, the car will suddenly loose power and the motor starts shaking/vibrating. I'll press in the clutch and it will stop the misfiring usually. This usually happens when I am in 3rd or 4th gear at around 3000 rpm. The problem shows up with or without being under boost and seems to happen at random.
The problem first started showing up last summer (2017), about two weeks after changing the timing belts. Does anyone know what my next step should be in trying fix this? Please take a look at the following history of what's been done to the car; before and after noticing the problem. Thanks for any help!
2015
Replaced Fuel Filter
Replaced Spark Plugs
Replaced Slave cylinder
Replaced Master Cylinder
Replaced Clutch Fluid Line
2016
Replaced Cam Angle Sensor
2017
Replaced timing belts (both timing belt A and timing belt B)
Replaced Crank Position Sensor
Replaced Water Pump
Two weeks later - First noticed P0300 CEL
Found Boost/vacuum Leaks
Replaced Upper Intercooler Piping
Replaced Blow Off Valve
Replaced Seals inside Throttle Body
Replaced Throttle Body Gaskets
2018
Replaced Spark Plugs - again
Replaced Spark Plug Wires
Replaced Clutch
Replaced Before Catalytic Converter O2 sensor