what is the fuel pressure for 2008 5.3 silverado?
Asked by LUVMYCHEVY Sep 20, 2017 at 02:05 PM about the 2008 Chevrolet Silverado 1500 LTZ Crew Cab 4WD
Question type: Maintenance & Repair
im looking to find out what my fuel pressure should be running and not running with only key on?
4 Answers
At the fuel rail with key on and engine running: 44.5 psi. I recall these were always lower than other 5.3 models, which were around 55. If you suspect a fuel pressure problem causing an issue, look at the MAF as well.
I got a 2006 gmc sierra 1500 5.3 crewman I replaced fuelpump & mass airflow senor and still getting 0172 & 0175 codes, can anyone help me?
LUVMYCHEVY answered 6 years ago
Ok so not to make a long story but something to check. I was getting miss fire codes and replaced every sensor and full tune up and it ended up being 1 bad catalytic converter! Fruckn pissed me off. Cranks sensors you name it were changed lol anyways, pull the 02 sensors closest yo motor and if it runs better you know you have a bad cat or both