Silverado long cranking after first start
Thread Starter
CF Beginner
Joined: Mar 2009
Posts: 1
Likes: 0
Silverado long cranking after first start
My 99 5.3L Vortec engine requires long crank times after first start and warm. Check engine light is also present. I have been told that it may be the fuel pressure regulator. Is this a good possibility? Where is it located and can a decent back yard mechanic handle the replacement?
Super Moderator
Joined: Oct 2007
Posts: 1,275
Likes: 0
From: Dayton PA
It sounds like the fuel relay has gone bad. When the fuel relay goes bad it doesn't turn on the fuel pump like is suppose to, as a fail safe GM intigrated a back up measure. When the engine builds up enough oil pressure and the computer senses that it has no fuel, it will bypass the fuel relay and kick on the fuel pump. hense, long cranking needed to build prussure to bypass the relay.
CF Beginner
Joined: Jul 2011
Posts: 2
Likes: 0
From: Wisconsin
I had the same truck with the same problem. I put a fuel pressure regulator in it and it fixed it right away. it is on the drivers side of the engine a small little vacume deal with a small hose comming out of the top of it. Held in their with a lil clip. pretty easy to change. If you pull the hose off after trying to start it and fuel runs out that is ur problem.
Thread
Thread Starter
Forum
Replies
Last Post
BluMustard
Silverado, Sierra & Fullsize Pick-ups
4
Dec 26, 2020 12:56 PM
jackrook
Silverado, Sierra & Fullsize Pick-ups
5
Jul 17, 2012 1:15 AM
