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Matt
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 21600
Experience:  BEng hons Mech engineering, in auto industry 22 years
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When engine hot and doing 65 mph just boils down no power when

Resolved Question:

when engine hot and doing 65 mph just boils down no power when on gas
Submitted: 1 year ago.
Category: Car
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.Iknow that you've fitted a new pump but 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.
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