DennisvdB
New member
- Joined
- Mar 13, 2011
- Location
- The Netherlands
Installed LH2.4 in my '76 244. When the ignition is on, the main fuel pump will start very briefly, but runs a bit rough. Also stops immediately afterwards. Cranking the engine won't help it start either.
Measured the pins on the EZK, everything seems ok except for 2 pins.
(on this schematic: http://volvowiringdiagrams.com/volvo/LH 2.4/LH2.4 ECU Pin Out.jpg)
-number 5: Signal ground; Signal ground on intake manifold for control module electronics.
0v on this one, it should read "Ubat" (?)
-number 18: Injectors control; Grounded when the injectors are to open.
Measured 12V here, where it should read around 190-200mV
The 2 ground terminals on the intake manifold are connected as they should be.
What is necessary for LH2.4 to get the engine running? And mainly to keep the main fuel pump running? As said, injectors won't work as well (measured it), but if it's a cause or effect of a failing pump I'm not sure about.
Measured the pins on the EZK, everything seems ok except for 2 pins.
(on this schematic: http://volvowiringdiagrams.com/volvo/LH 2.4/LH2.4 ECU Pin Out.jpg)
-number 5: Signal ground; Signal ground on intake manifold for control module electronics.
0v on this one, it should read "Ubat" (?)
-number 18: Injectors control; Grounded when the injectors are to open.
Measured 12V here, where it should read around 190-200mV
The 2 ground terminals on the intake manifold are connected as they should be.
What is necessary for LH2.4 to get the engine running? And mainly to keep the main fuel pump running? As said, injectors won't work as well (measured it), but if it's a cause or effect of a failing pump I'm not sure about.