Question about 2007 Cadillac Escalade Ext
I tried intake gasket and mass air flow sensor i checked fuel pressure its good 55 psi
Posted by Anonymous on
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Posted on Jan 02, 2017
Your fuel pressure is WAY to low, it should be at least 55 PSI, (spec is 55-62 PSI) You will need to replace the fuel pump and the fuel filter then clear the codes and retest, the fuel pump is located inside the fuel tank, the fuel tank must be removed to access the pump. after the fuel pump is replaced if any lean codes come back from the O2 sensors the intake maniold gaskets will need to be replaced as well, they are a common problem as well but your main problem is very low fuel pressure, this alone will set all the codes you have.
Posted on Oct 28, 2010
The code is referring to the vehicles fuel system being lean on bank 1 and 2. You may have a vacuum leak which is causing this problem. Take it to your local mechanic and have him smoke the system to see where the leak is. I think these cars have plastic intake manifolds that leak either through the rubber gasket, a crack in the plastic or a little plastic plug that is on the passengers side of the vehicle behind the power steering pump. Hope this helps
Posted on Dec 22, 2010
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