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Discussion Starter #1
put a fuel pressure gauge on the saab.
at idle its about 30 - 35 psi...
bring the revs anywhere up to 3000 rpm ( stationary) and the fuel pressure doesnt move, well it actually drops slighly lower !.. clamped the vac line to fuel pressure regulator and fuel pressure still didnt move...i`m pretty sure that if you clamp it the pressure should move way up high ?

any body confirm. ??

mark k
 

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Hello, everyone!
Pressure regulator new 3 bar, pump aem 340, new fuel filter.
How you can see pressure 2.6 up to 2.8 not more. When I press accelerate the pressure upped and back down again. Plus, if I press on accelerate and "drop down" the rpm go to 500-600.
Saab 9-5 2006 2.3
What is it?
Thank you.
 

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fuel pressure regulator controls its pressure relative to intake manifold. recheck without attached tube to intake manifold.
 
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