Showing 41–48 of 65 results
Turbo pressure regulation system
Lab scope measurement of a turbo charge pressure regulation system on a car during acceleration. The signals from the turbo charge pressure regulation system are shown and can be downloaded. To help determining whether the turbo charge pressure regulation system is functioning correctly, different deviations from the example signals are mentioned along with possible causes.
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EGR valve DC motor and position sensor
Lab scope measurement of an EGR valve position DC motor and position sensor on an engine under various conditions. The signal from the DC motor and position sensor are shown and can be downloaded. To help determining whether the EGR valve is functioning correctly, different deviations from the example signal are mentioned along with possible causes.
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Fuel pressure sensor and fuel metering valve
With a lab scope a fuel pressure sensor and fuel metering valve signal voltage are measured on an engine under various conditions. The signal from the fuel pressure sensor and metering valve are shown and can be downloaded. To help determining whether the fuel pressure sensor and metering valve are functioning correctly, different deviations from the example signal are mentioned along with possible causes.
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Citroën Berlingo with headache
After disassembling and reassembling the cylinder head of a 2011 Citroën Berlingo, the engine would not run anymore, producing camshaft related errors. Using an automotive diagnostic oscilloscope, the cause of the problem was found.
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Exhausted Mercedes E-class
A Mercedes E-class was hard to start, flattened the battery and left the owner stranded. The first garage is was sent to concluded that the immobilizer ECU had forgotten the key codes. The vehicle was then sent to a garage with AECS technical support and using an automotive diagnostic oscilloscope and RFS400 return flow sensor the found the real cause of the problem.
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Kia Carens with mixture issue
A Kia Carens with 1.6 liter engine keeps generating an oxygen sensor related code that the fuel mixture was too rich. Resetting the error and driving the car would set the error code again. Several components were replaced, even the Electronic Control Module (ECM), but the error kept coming back. Diagnosing using a automotive lab scope revealed the cause of the problem.
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Citroën Xantia refuses to run
A 1999 Citroën Xantia had a new starter motor fitted, after which it would not run anymore. While cranking it would fire briefly and then die. The car’s battery had been disconnected for the starter motor job. A crankshaft sensor code was logged and thus the crankshaft sensor was replaced, regardless of the good signal. Later the ECM was replaced all with no positive results. The question was if the immobilizer could have reset itself by disconnecting the battery. Proper measuring revealed what the real problem was.
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Ford Fiesta stutters
When trouble shooting intermittent problems, a good automotive oscilloscope is indispensable. A Ford Fiesta with J6B engine was suffering occasional stuttering. The shop it was brought to did not have an oscilloscope, so they could not easily locate the source of the problem. They did replace some components, but the problem remained. Using an automotive diagnostic oscilloscope, the problem was soon found.
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