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Stall at idle - fuel pressure regulator? V70-XC70 1999

posted by  KlausC on  Tue Aug 25 13:38 CST 2015
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

The FPR has been moved to the subframe behind the engine block. You will see what looks like 2 fuel lines, follow them down back to the FPR. One of those lines is actually a vacuum line that connects to the front of the intake manifold.

A failure in the FPR will result in very long crank times in a cold engine, and a cloud of black smoke out of the exhaust (briefly) as the engine starts. It does not affect driving speeds. The dead (leaking back to the tank) FPR should only cause a too rich condition as that causes the fuel pressure to rise to about 44psi, similar to 3,000+ rpm.

A 'tune up' on the 1999 is nothing but 5 spark plugs.

A leaking air intake hose, a very dirty throttle body, garbage spark plugs, could all have the same symptoms. But, the car is not drivable in its current condition. And you do not know how worn the clutch is...
--
My back feels better when I sit in a Volvo seat






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