bmyler Posted July 3, 2008 Report Share Posted July 3, 2008 My truck died today while pulling into the parts store. I had them run their little tests and they said it was the alternator. Well I bought a new one and the thing is still not working. My voltage gauge is pegged and the truck idles at about 400 rpm and then quits and shuts off whenever I slow down. It's an 03 Chevrolet with a 4.6, does anyone have a any idea what I could look at next so I don't piss away anymore money on stuff i don't need. Thanks much in advance. Quote Link to comment Share on other sites More sharing options...
kicker417 Posted July 3, 2008 Report Share Posted July 3, 2008 check the fuel filter and air filter Quote Link to comment Share on other sites More sharing options...
Stephen Posted July 3, 2008 Report Share Posted July 3, 2008 what kind of truck? silverado? never heard of a 4.6 in a 03. Quote you can cook bacon shirtless if you're not a pussy...lol not hatin, but am i wrong here it looks as if the amp is not grounded its hooked directly to the battery. it that the way it should be. DC POWER Link to comment Share on other sites More sharing options...
Guest Posted July 3, 2008 Report Share Posted July 3, 2008 bad battery? same thing happened to my moms van Quote Link to comment Share on other sites More sharing options...
Chris D Posted July 3, 2008 Report Share Posted July 3, 2008 It sounds like its a vacuum leak. Does it stall out when you apply the brakes? Quote Link to comment Share on other sites More sharing options...
bmyler Posted July 3, 2008 Author Report Share Posted July 3, 2008 Sorry it's a 4.8, yes it's a Silverado. Yeah I tried a different battery and it still does it. And it does it when I hit the brakes or when i first put it in gear after it has warmed up. Thanks guys Quote Link to comment Share on other sites More sharing options...
Chris D Posted July 3, 2008 Report Share Posted July 3, 2008 Yea most likely a vacuum leak. When you put it in gear and hit the breaks it pulls the idle of the engine down, creating less vacuum pressure(not enough to keep it running). Check out all the vacuum lines that you can easily get to, you may actually be able to hear the leak if its pulling in enough air. Also check missing caps on unused vacuum fittings, they sometimes crack and vibrate off. Quote Link to comment Share on other sites More sharing options...
bmyler Posted July 3, 2008 Author Report Share Posted July 3, 2008 Hell yeah......Thank you very much man......I will do that. Quote Link to comment Share on other sites More sharing options...
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