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03 3.0 engine problems - j f a.
Problem one is engine revs up on its own when stopped at traffic lights,between 750 revs and 1000,mainly when cold. The other query is when i unscrew the fuel cap thier's
alway's a hiss as if pressure is building up inside the tank ?
J F A.
03 3.0 engine problems - Screwloose

They're fairly famous for cracking the heads through the injector seats and running on the diesel leak - that might account for combustion gas returning to pressurize the tank too.