Slow throttle response

Tiny
CALEBA2012
  • 2003 CHEVROLET SILVERADO
  • 186,000 MILES

When I first start my truck my throttle is very hesitant, and my truck feels like it has no power at all. If I let it idle after trying to run it, it feels like its gonna die. It almost sounds like it is cammed. I have changed my PCV valve cleaned my air intake and throttle body. I either think it is my o2 sensors or my coil pack. Please share your info with me.

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Tuesday, April 16th, 2013 AT 8:07 AM

4 Replies

Tiny
JDL
  • EXPERT
  • 16,308 POSTS

Use a gage and check for proper fuel pressure fuel pressure. Can you check for applicable trouble codes? Some of the national brand autostores will check codes for free.

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Tuesday, April 16th, 2013 AT 10:50 AM
Tiny
JDL
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I forgot to ask litre size of engine?

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Tuesday, April 16th, 2013 AT 10:55 AM
Tiny
CALEBA2012
  • MEMBER

It's a 5.3 v8, I took to autozone and they said it was the MAF, I changed it and it is still doing that. The check engine light flashes when I press on the gas.

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Tuesday, April 16th, 2013 AT 3:13 PM
Tiny
JDL
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What was the actual code number? The code doesn't tell you what to replace, just that the system thinks there is a problem on that circuit, somewhere.

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Wednesday, April 17th, 2013 AT 7:30 AM

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