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Matt
Matt, Mechanical Engineer
Category: Vauxhall
Satisfied Customers: 21628
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My Vauxhall astra 1400cc 2001starts fine when I hold the revs

Customer Question

My Vauxhall astra 1400cc 2001starts fine when I hold the revs steady it starts to run rough and gradually gets slower and cuts out but will start fine again then do the same again
Submitted: 1 year ago.
Category: Vauxhall
Expert:  Matt replied 1 year ago.
Hello this sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank. If the connections to the pump are corroded or damaged then the pump could stop at any time or could not be running at full speed. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse,Ideally measure the pressure at the injectors and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure. and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.
Expert:  Matt replied 1 year ago.
Hi
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