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2003 Chevy Silverado 1500 Runs Horrible


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Posted

Would a code tell me to clean it. Would a bag egr cause this problem in the cold but not warm air temp.  Can I reuse the gasket after I clean it? Thanks for the help!

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Posted

Yes you can reuse the gasket, I've had mine on and off tons of times and reused the gasket every time. I'd take it off and see what it looks like regardless. It's free and it's super easy to take off. (Less than 5 min)


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Posted

Will do. Would anyone know what fuel pressure a 4.8L should have? Will check that and the egr this weekend. Thanks again!

Posted
Will do. Would anyone know what fuel pressure a 4.8L should have? Will check that and the egr this weekend. Thanks again!

55-62 psi of fuel pressure is the specs


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Posted

Thanks for the fuel pressure spec carlshepard79. I was looking for the EGR today and cannot find it. In fact there is not even a tube that comes from the headers to even go to an egr. On top of that, the headers do not even look like they match up with all the holes on the block. As you can see in the pics, some of the holes are not used. I do now know if it is because the headers are a part of the aftermarket exhaust system and do not use all the holes but maybe there is a problem here and the previous owners got rid of the egr. Any help is appreciated, thanks!

Posted

Your egr should be right behind your throttle cable. As for those holes they should have bolts in them but I’m not sure if not having them would hurt anything. Maybe someone else on here can tell u more about the holes. I know mine has bolts in them. I just walked outside & looked.


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Posted
Your egr should be right behind your throttle cable. As for those holes they should have bolts in them but I’m not sure if not having them would hurt anything. Maybe someone else on here can tell u more about the holes. I know mine has bolts in them. I just walked outside & looked.


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Here’s a better pic. I took a pic of where mine was. U can see where my fingers pointed the plate which is the delete kit to do away with it. Hope it helps7126c31f4c38a9ec123466d13cf0bde3.jpg


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