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rpmdiag
rpmdiag, Tech and Instructor
Category: Chevy
Satisfied Customers: 6883
Experience:  Since 1975
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5.3 doesn't idle well. It runs ok but there is a little

Customer Question

5.3 doesn't idle well. It runs ok but there is a little roughness when I accelerate normally. had the fuel pump replaced-it didn't help much. added injector cleaner it didn't help at all. also THE 100,00 MILE CHANGE OF PLUGS WAS SUPPOSEDLY DONE- but don't know for certain if they did the work.
JA: Have you ever replaced the fuel pump, or is this the original?
Customer: I paid to have pump replaced. one never knows if the work is done though when the problem persists. should I have a different mechanic check the fuel pump?
JA: What is the model/year of your Chevy?
Customer: 2000 Silverado 5.3 at.
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: replace fuel pump, fuel injector cleaner in gas tank. I probable will have a mechanic fix it but would like to be armed with what the problem might be.
JA: Anything else you think the mechanic should know?
Customer: fuel distributor was replaced at about 85,000-it leaked
Submitted: 4 months ago.
Category: Chevy
Expert:  rpmdiag replied 4 months ago.

Hi, welcome to Just Answer. I’m Ron and I’ll be helping you
today.
Before we get started though, Please understand that I don't know
your skill level or tools you have to assist us. Also understand that
I can't see, smell, hear, or touch the vehicle either, so patience is
appreciated. JA is a great Q/A site, but it does NOT replace a
repair shop.
My goal is to make you happy and get a great rating in return for
my time. Sometimes I have to give you bad news that I know you
didn’t want to hear, so please don’t shoot the messenger.

The problem won't be the fuel pump, but I do question the plugs, wires and coils. The best thing to do is scan the computer looking at the fuel trims. This will give us a great direction to go from there whether or not is lean from a vacuum leak or a misfire is occurring.

Thanks, Ron

Customer: replied 4 months ago.
it needs to put on a computer
Chevy dealer is best or Firestone
Expert:  rpmdiag replied 4 months ago.

Either place as long as they have the right tools and knowledge.

Thanks again, and please don't forget to rate me and keep this link in case you need me again later on.

Ron