Vehicle
Alfa Romeo, 156, 2.0l Twin Spark, Surging Idle and stumble on take off, (sometimes).
Symptom:
Surging Idle When engine has warmed up, Worse with Air conditioner turned on
The Vehicle had been bought to the workshop to find out why the Idle was so erratic, the vehicle had undergone a few repairs already such as new spark plugs, air mass meter and throttlbody clean and reset the idle adaptions. Knowing this we set out to figure out why this problem in these vehicle is a hard one to pin point.
Reading the information in the PDF document will help when trying to determine the source of the fault, not necessarily is the catalyst at fault there are many variables.
The first three bullet points on the list would be the hardest to test as these require testing before and after the cat converter with 5 gas analyser, the time to set up a vehicle would be a challenge.
To add to this the disappointment when you realise it is a v6 or v8 engine, this makes the setup to the vehicle even harder.
Vehicle
Holden Cruize, 2009, F18D Engine
Symptom:
The vehicle shows a check engine light on the dash board, the fault code is p2096 the description is post catalyst fuel trim system low limit.
the driving technique to make the symptom reoccur is warm up the vehicle so both o2 sensors front and rear are ready to send signal back to PCM, drive for 5 mins and drive to 80 kmh and back off the accelerator this will see that the o2 sensor both reach 0.00v when the vehicle is stopped and back to idle the front o2 sensor will start to cycle again, the rear o2 sensor will be at 0.12v – 0.18v and steady generally the voltage will take a while to rise, back to normal of 0.76v which is in the normal range of operation.
after this the check engine light will not come on the dash board but the fault code p2096 will be set in the PCM, during the test drive if you clear and carry out the same road test it will also be set again as the issue is still the same. this method of testing was the only way I could reproduce the fault time and time again.
Vehicle
Holden Cruize, 2009, F18D Engine
Symptom:
The vehicle did not start since towed in, we had a look at the fault codes and identified the fault as a body control Module (BCM) fault
Vehicle
Volkswagon Golf 1KZ 2008, TSI BLG engine
Symptom:
Engine light on, and vehicle responsiveness a little slow
The Vehicle had been bought to the workshop to find out why the engine light is coming on, a quick scan revealed a 08213 error also known as p2105 fault intake manifold flap position sensor fault improbable.
Vehicle
Holden Astra, AH, 1.8l Z18XER
Symptom:
Engine light on, and stalling sometimes when stopping at traffic lights
The Vehicle had been bought to the workshop to find out why the engine light is coming on, a quick scan revealed a p2120 error.
Vehicle
Toyota Corolla KE10
Symptom:
The alternator light comes on on dash board that warns you that the alternator is not charging, what is faulty, external voltage regulator or the alternator its self.
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Vehicle
Holden Commodore VE SS V8, Series 1
Symptom:
The alternator light comes on on dash board that warns you that the alternator is not charging, The late model vehicles have ECU controlled, charging circuits and no longer just use the battery for sensing, the alternators are pulse width controlled by the ECU for charge rates from the alternator. When the alternator lights comes on you now have to ask your self is the battery not being charged due to a faulty alternator or is the Engine ECU not sending a signal, or worse both,
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Have you ever done the job on the car and realised where do i find the information to do the simple reset for a light?
How the TBELT light works
The TBelt light on the KUN16 Toyota, Hilux become activated at 150,000kms there is two different dash board models, the standard and the large lcd display, listed below is the reset procedure to cancel the tbelt light after the timing belt job has been done. Read More
Vehicle
Ford Falcon BA XR8 5.4L 4 valves per cylinder 2004
Symptom:
The vehicle drove into the workshop running the vehicle was running ok, but a miss was noticable at idle, the vehicle was then test driven to confirm the customer complaint that it hesistates and misses during takeoff.
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