Question about 2005 Chevrolet TrailBlazer
Look at the plastic air resonator, top of the engine, big box that says 4200 on it. On the right hand side near the front, you'll see a little plastic elbow piece facing down. Follow this line, it goes right to the regulator.
Posted on Mar 31, 2011
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Posted on Jan 02, 2017
My friend, I suggest you go by your local Auto Parts Store and purchase a Haynes Repair Manual on this vehicle. There are many sensors and electronic controls involved with this engine as I'm sure you already know. Any one of these can memic something that "it is not".
If your problem is the Pressure Regulator, it is located inside the "Tunnel Ram" intake manifold along with the multiport fuel injection system.
Now,,, before I went through the trouble and expense of going into the Intake Manifold, I would run the EMC in Diagnostic Mode and see if there are any codes present.
Posted on Feb 06, 2009
another engineers wet dream. think of it this way . what is normally in the intake when the engine is running.. answer vacume, hence the regulator gets its vacume without a hose connected to it as its already in a full time vacume chamber.no hose required . ps be carefull to seat the regulator and o rings securely into the housing befor you reattach the secureing metal clip.
good luck chris
Posted on Mar 23, 2009
SOURCE: fuel pressure regulator
Two places to look...if you have separate injectors for each cylinder then regulator should be at the front end of the fuel rail. If you have throttle body injection it is on the throttle body itself.
Posted on Jul 30, 2009
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