Possible to detect low fuel pressure/bad fuel pump with VAG-COM ?
06-09-2003, 05:50 PM
#2
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Nope. No fuel pressure transducer
ECU doesn't have a clue what the fuel pressure is. Therefore it can't tell VAG-COM.
Gotta do this the old-fashioned way with a pressure gauge. Many fuel rails have a port for attaching a gauge for diagnostic purposes.
-Uwe-
Gotta do this the old-fashioned way with a pressure gauge. Many fuel rails have a port for attaching a gauge for diagnostic purposes.
-Uwe-
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06-29-2003, 05:52 PM
#3
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Oscilloscope on fuel pump...
can also do this.
A current probe (clamp on style) around the fuel pump power line will tell you right away the health of the fuel pump (current draw, RPM & motor condition) without ever needing to open a fuel line.
It won't tell you the fuel pressure, but if the motor's shot then there's no need to test pressure. This is the fastest way to test a fuel pump.
A current probe (clamp on style) around the fuel pump power line will tell you right away the health of the fuel pump (current draw, RPM & motor condition) without ever needing to open a fuel line.
It won't tell you the fuel pressure, but if the motor's shot then there's no need to test pressure. This is the fastest way to test a fuel pump.
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