Rob 20seh Posted September 4, 2023 Share Posted September 4, 2023 Hi all. My 1992 cav Sri has a problem, when ignition is turned on, pump relay clicks constantly, injectors are firing and pump is running. When it starts and clears all the fuel from the bores it runs ok, e m l is on . Any help would be appreciated Quote Link to comment Share on other sites More sharing options...
Vauxhall Owners Club Posted September 4, 2023 Share Posted September 4, 2023 From memory there is also a system relay which may be stuck on causing the pump relay to click in and out to prime the fuel system, but it needs a crank signal to fire the plugs as well Quote Link to comment Share on other sites More sharing options...
Rob 20seh Posted September 18, 2023 Author Share Posted September 18, 2023 Hi. Thanks for your reply. It’s the injectors that are pulsing along with the fuel pump. I have checked the wiring fully from crank sensor to the e c u. All fine. It does stop pulsing when the crank sensor is disconnected. I have tried a new sensor, still the same. I am thinking it may be the e c u. The car was stood up for 5 years before I bough it. Quote Link to comment Share on other sites More sharing options...
Rob 20seh Posted September 28, 2023 Author Share Posted September 28, 2023 Hi. It was the e c u at fault. 1 Quote Link to comment Share on other sites More sharing options...
Vauxhall Owners Club Posted September 29, 2023 Share Posted September 29, 2023 thanks for updating us and glad you got a conclusion on the problem Quote Link to comment Share on other sites More sharing options...
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