A summary of the circumstances and the verifications already performed my car (MG ZT 190 2.5l V6 ESS (2001)):
Down for 2 months.
Circumstances of failure:
Along the way, loss of power, the motor signal is displayed on the dashboard, followed by a gradual deceleration to a stop the engine. Can not restart.
Here are the previous investigations:
- I first thought of fuel starvation -> by filling 20 liters remained in the tank
- The candles were black and wet -> certainly drowned due to different misfire. I cleaned.
- The relay and fuses associated with the fuel pump -> Ok
- I listened to the pump through the tank -> Ok
- The pump seems to work correctly -> Key in position 1, you can hear turn
- Checking for gas to the injectors -> By disconnecting the supply line, key in position 1, I can gather from 20 to 25 ounces of gasoline
- Check the fuel filter without removing the filter but an attempt to pose an orange collar attaches the filter to set a default pressure -> Failed filter because my model is not compatible with the default . The orange clip is for sale ...
- Checking the crankshaft sensor -> I replace against a new but without effect.
- Verification of probes using a multimeter -> after cleaning and attempt to repair the lambda sensor with a torch, it gives "10 ohms" each. In truth, I do not even use a multimeter ... I have finally replaced by new probes
- Check sensor idle -> complete cleaning and change of the membrane (pending receipt of a new sensor)
- Check intake manifold -> Do not seem dirty, just a little too fat for my taste in the engine cylinders butterflies
- Check the air pressure sensor and temperature -> Thorough cleaning (eventually, I gave a new sensor)
.... etc.
Good short, I managed to restart the engine using the accelerator at the same time. But the problem is that I do not idle the engine. I have to keep the foot on the pedal and keep playing with the accelerator. It releases a lot of smoke at the back and at one point even accelerating the engine floods. And impossible to restart the engine whines again.
I initially perform diagnostics using the diagnostic function on-board the vehicle.
Here are some test results:
Engine off and key in position 1
5.0-Average Power 120 = 12 liters / 100 km
5.1-Battery remaining 247 km in
6.0-0296 fuel level ...
6.1-Overall fuel ----
8-Value in HEX 1 "£" 8
9.0-Battery 12 V 120 =
10.0-Code 56 countries
11.0-unit system FdFC07
Errors in memory 14.0-(14.0-> C78100), (14.1-> F48400), (14.2-> 000 000) (14.3-> 000 000) (14.4-> 000 000)
Then I has a diagnostic device and the ELM 327 Here are the results I got:
Here some data it cold, in switch position 2:
Freeze Frame Data
Fuel system 1 status OL
Fuel system status 2 OL
Calculated Load Value 48.2%
Engine Coolant Temperature 21 ° C
Short Term Fuel Trim Bank1-0.0%
Short Term Fuel Trim-Bank3 10.9%
Long Term Fuel Trim-Bank 1 -8.0%
Long Term Fuel Trim Bank 3-10.9%
Short Term Fuel Trim Bank2-0.0%
Short Term Fuel Trim-Bank4 12.5%
Long Term Fuel Trim-Bank 2 -8.0%
Long Term Fuel Trim-Bank 4 12.5%
Intake Manifold Absolute Pressure 83kPa
Engine RPM 4480rpm
Vehicle Speed Senor 0km / h
Pending Trouble Codes
P0300 Random / Multiple Cylinder Misfire Detected (random misfire detected)
P0172 System Too Rich Bank 1 (Mixture too rich line 1)
P0175 System Too Rich Bank 2 (Mixture too rich line 2)
P0500 Vehicle Speed Sensor "A" (the vehicle speed sensor - circuit failure) -> E waiting to receive new front axle sensor
99kPa inlet pressure tubure
Ignition advance deg 9.5 °
Absolute position of the throttle 11.37%
O2 sensor voltage channel 1 sensor 1 0410 Volt
O2 sensor voltage channel 1 sensor 2 0410 Volt
O2 sensor voltage channel 2 sensor 1 0410 Volt
Remains to be verified:
- The fuel pressure to the injectors -> problem, I do not have a compression tester
- The beam -> Waiting
reception
-. Etc. ..
That's where I am ...