HELP please 2006 1.6 vvt. Extremely poor performance. Poor acceleration especially under load
Posted: Tue Oct 19, 2021 3:06 am
Hi all. Having an issue with my megane.
I am suffering from poor performance and extremely poor acceleration. Especially under load. Have to rev to over 4000 to pull up a hill. (no rattle. Starts fine) Basically hardly any acceleration below 3500rpm. This is through all gears. It really feels like it’s been held back and tbh I thought the clutch was badly slipping but no clutch is fine did hill test put car in 3rd and tried to set off and it stalled.
I have pulled the codes and initially had a p0010 and p0340. I cleared the codes and only the p0010 came back. I have ordered a new dephaser solenoid but wouldn’t have thought it would affect acceleration this much.
If I disconnect the map sensor it’s absolutely fine. Fast acceleration not sluggish at all. As soon as it’s plugged back in it’s back to undrivable.
I will replace the solenoid and clean the throttle body anyway but is this likely the camshaft position sensor?
I would usually change coils and sparks but there are no codes to signify a fault and coils etc would still be failed with map disconnected.
One thing to note on the live readouts I noticed the stft and ltft going up to 24% which seemed a tad high to me. O2 sensor reading look ok.
Idle
Calculated load value 23.9%
Coolant Temperature 201F
Short term fuel trim Bank 1 0.0%
Long term fuel trim Bank 1 23.4%
Intake Manifold Pressure 11.2psi
Engine Speed - RPM 718
Vehicle Speed 0
Ignition timing advance 1.0
Intake air temperature 115F
Absolute Throttle sensor position 12.5%
Oxygen sensor voltage bank 1 sensor 1 0.7v
Short term fuel associated to bank1 sensor1 -4.7%
Oxygen sensor voltage bank 1 sensor 2 0.73v
Short term fuel associated to bank1 sensor2 -100%
Distance travelled while MIL is activated 0
Vehicle voltage 13.7v
Video of live obd on megane owners club fb page
Thanks
I am suffering from poor performance and extremely poor acceleration. Especially under load. Have to rev to over 4000 to pull up a hill. (no rattle. Starts fine) Basically hardly any acceleration below 3500rpm. This is through all gears. It really feels like it’s been held back and tbh I thought the clutch was badly slipping but no clutch is fine did hill test put car in 3rd and tried to set off and it stalled.
I have pulled the codes and initially had a p0010 and p0340. I cleared the codes and only the p0010 came back. I have ordered a new dephaser solenoid but wouldn’t have thought it would affect acceleration this much.
If I disconnect the map sensor it’s absolutely fine. Fast acceleration not sluggish at all. As soon as it’s plugged back in it’s back to undrivable.
I will replace the solenoid and clean the throttle body anyway but is this likely the camshaft position sensor?
I would usually change coils and sparks but there are no codes to signify a fault and coils etc would still be failed with map disconnected.
One thing to note on the live readouts I noticed the stft and ltft going up to 24% which seemed a tad high to me. O2 sensor reading look ok.
Idle
Calculated load value 23.9%
Coolant Temperature 201F
Short term fuel trim Bank 1 0.0%
Long term fuel trim Bank 1 23.4%
Intake Manifold Pressure 11.2psi
Engine Speed - RPM 718
Vehicle Speed 0
Ignition timing advance 1.0
Intake air temperature 115F
Absolute Throttle sensor position 12.5%
Oxygen sensor voltage bank 1 sensor 1 0.7v
Short term fuel associated to bank1 sensor1 -4.7%
Oxygen sensor voltage bank 1 sensor 2 0.73v
Short term fuel associated to bank1 sensor2 -100%
Distance travelled while MIL is activated 0
Vehicle voltage 13.7v
Video of live obd on megane owners club fb page
Thanks