Engine will not idle

FARMERJOE

MEMBER
2002 CHEVROLET SILVERADO
4.3L
6 CYL
4WD
AUTOMATIC
112,678 MILES

This truck was parked due to sons deployment. Went to start it and battery was drained. After charging started truck, it will not idle. It runs okay at anything over idle just no idle. I have driven this truck in the past and idle was okay pre-drainedd battery.

Monday, October 2nd, 2017 AT 8:38 AM

4 Replies

JDL

MECHANIC
16,098 POSTS

Sometimes when battery voltage is lost, some systems may have to relearn. Usually just driving it a while and it will relearn itself. You can also check and clean the IAC/idle air control, see if it helps? You may need to clean throttle body and those small passages. Any applicable trouble codes?

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Monday, October 2nd, 2017 AT 9:31 AM

RENEE L

ADMIN
1,260 POSTS

Hi FARMERJOE,

All of us at 2CarPros want to thank your son for his service. We truly appreciate him and all of our military service men and women.

Sincerely,

The 2CarPros Team

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Monday, October 2nd, 2017 AT 12:05 PM

FARMERJOE

MEMBER
15 POSTS

Thank you all. L will try driving it for a while to see if that helps the idle and I appreciate you comment thanking for his service our family has always served.

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Monday, October 2nd, 2017 AT 3:03 PM

KEN L

MASTER CERTIFIED MECHANIC
54,137 POSTS

Here is a guide that deals with the problem you are describing:

https://www.2carpros.com/articles/engine-stalls-idles-too-high-low-after-dead-or-replaced-battery

Thanks again.

Please use 2CarPros anytime, we are here to help. Please tell a friend.

Cheers, Ken

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Tuesday, October 3rd, 2017 AT 12:15 PM