How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask BOBBYSS Your Own Question

BOBBYSS, Master Technician
Category: Chevy
Satisfied Customers: 16772
Type Your Chevy Question Here...
BOBBYSS is online now
A new question is answered every 9 seconds

2003 Chevy Silverado 1500: with a 4.8L foot..die

Customer Question

I own a 2003 Chevy Silverado 1500 with a 4.8L V8. The truck will start and Idle fine. If I rev the motor and then remove my foot from the gas, the trucks Rpms drop and it will die. I can drive the truck down the road fine. It does not spit or sputter, but when I come to a stop sign or have to make a turn the trucks RPMs fall off and it will die. I can stop it from doing this by keeping my foot on the gas pedal and keep the RPMs at or above 1000 RPMs. What could cause this, and how do I fix it?
Submitted: 5 years ago.
Category: Chevy
Expert:  BOBBYSS replied 5 years ago.
Hello JACUSTOMER, start by cleaning out the vehicles throttle body. If the throttle body is dirty then this will happen. You can remove the air intake tube and spray the throttle body out with throttle body cleaner and wipe it clean.
Customer: replied 5 years ago.
IF it is a dirty Throttle body, then why would it Idle fine initially and then only act up after I press on the gas. I have read on other posts through out the interweb that has pointed to a few things. One was the MAF sensor, another was the Throttle position sensor and third was a Crankshaft position sensor. I am going to clean the MAF tonight to see if that works. I really do not see how a dirty throttle body can be the issue, but at this point I will try any thing. Please clarify.
Expert:  BOBBYSS replied 5 years ago.
If the vehicle tries to die when you remove your foot from the gas then the throttle plates seems like it is choking the engine.
Customer: replied 5 years ago.
Relist: Answer quality.
The answer given just does not seem to add up. I feel it has to be bigger than just a dirty throttle body.
Expert:  BOBBYSS replied 5 years ago.
Does the problem only occur when releasing the gas pedal?

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Previous | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland

Meet The Experts:

  • GM Tech (Cam)

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
< Last | Next >
  • GM Tech (Cam)'s Avatar

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
  • Tim's Auto Repair's Avatar

    Tim's Auto Repair


    Satisfied Customers:

    Have owned a repair shop for 25 yrs.
  • Gary's Avatar


    Chevy Technician

    Satisfied Customers:

    15 years GM master tech
  • Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    ASE Master Certification. GM World Class Certification
  • John's Avatar


    Master A.S.E Automotive technician

    Satisfied Customers:

    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Auto Mech / Electronics

    Satisfied Customers:

    Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
  • Neal's Avatar


    Chevy Mechanic

    Satisfied Customers:

    Shop Owner and Mechanic on multiple makes.