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Matt
Matt, Engineer
Category: Subaru
Satisfied Customers: 20605
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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I just bought a tribeca today and am already having some

Customer Question

Hi Kevin I just bought a tribeca today and am already having some scary problems when accelerating more than usually like to get on the highway or to overtake the vehicle begins to act like its having trouble shift gears and jumps between4000 to 5000 rpm
Submitted: 4 months ago.
Category: Subaru
Expert:  Matt replied 4 months ago.

Hello

you don't mention if you have nay check engine lights on ?

so this sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank.

1st thing to try is to remove the fuel filler cap and then flick the ignition on whilst listening for the brief ‘buzz’ of the pump

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 injector rail (should usually be around 3Bar / 45psi +) 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.

Expert:  Matt replied 4 months ago.

Hi

do you still need help?

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