Need help with hesitation with my 2000 Chevy Silverado

RSailer · 04-11-2006, 05:16 PM

It doesn't happen every time but when shifted in to gear, it drops RPMs and it has to be shifted in to neutral or park to avoid dying.

Engine is a 5.3L, has a K&N cold air filter, has a throttle body spacer, it has new spark plugs and performance spark plug wires.

bradrhale · 04-13-2006, 03:27 PM

i once owned a 5.7 that had the same symptoms and cant for the life of me remember why.

mudseeker · 04-13-2006, 09:40 PM

did this start before or after you installed the "performance" stuff. check your codes.

RSailer · 04-14-2006, 10:20 PM

It has always done it, even before adding the preformance stuff.

mudseeker · 04-15-2006, 06:11 PM

check your fuel delivery and for vacum leaks around TBI. either sucking in to much air or not enough fuel.

gmtech · 04-16-2006, 03:16 AM

Do you have a throttle cable or do you have what we call drive by wire (no cable)?

Bart · 04-27-2006, 01:04 PM

You want to make sure there is no air leaks between you mass air flow sensor and the throttle body. Any unregistered air that gets after the MAS can create driveablity problems. My first guess is you have carbon build up in the throttle body. Clean all the carbon away from the throttle plate and idle air control motor. In my area we see a lot of the GM trucks with tip in hessitations caused by carbon in the throttle body.

RSailer · 05-08-2006, 06:19 PM

Hey Bart thanks for the great advice!!! You were right on. I took off my throttle body, cleaned all the carbon out and there was a ton of it, and also found 2 small air leaks in the air intake. Resealed them and have not had any hesitation.

Thanks again!!!!

04-11-2006, 05:16 PM	#1
RSailer Junior Member Join Date: Apr 2006 Posts: 4	Need help with hesitation with my 2000 Chevy Silverado It doesn't happen every time but when shifted in to gear, it drops RPMs and it has to be shifted in to neutral or park to avoid dying. Engine is a 5.3L, has a K&N cold air filter, has a throttle body spacer, it has new spark plugs and performance spark plug wires.

04-13-2006, 09:40 PM	#3
mudseeker Senior Moderator Join Date: Feb 2006 Location: michigan Posts: 6,373	did this start before or after you installed the "performance" stuff. check your codes. __________________ i'd rather be hunting

04-15-2006, 06:11 PM	#5
mudseeker Senior Moderator Join Date: Feb 2006 Location: michigan Posts: 6,373	check your fuel delivery and for vacum leaks around TBI. either sucking in to much air or not enough fuel. __________________ i'd rather be hunting

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04-13-2006, 03:27 PM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,014	i once owned a 5.7 that had the same symptoms and cant for the life of me remember why.

04-14-2006, 10:20 PM	#4
RSailer Junior Member Join Date: Apr 2006 Posts: 4	It has always done it, even before adding the preformance stuff.

04-16-2006, 03:16 AM	#6
gmtech Senior Member Join Date: Dec 2005 Location: farmville Va Posts: 348	Do you have a throttle cable or do you have what we call drive by wire (no cable)?

04-27-2006, 01:04 PM	#7
Bart Full Member Join Date: Apr 2006 Posts: 13	You want to make sure there is no air leaks between you mass air flow sensor and the throttle body. Any unregistered air that gets after the MAS can create driveablity problems. My first guess is you have carbon build up in the throttle body. Clean all the carbon away from the throttle plate and idle air control motor. In my area we see a lot of the GM trucks with tip in hessitations caused by carbon in the throttle body.

05-08-2006, 06:19 PM	#8
RSailer Junior Member Join Date: Apr 2006 Posts: 4	Hey Bart thanks for the great advice!!! You were right on. I took off my throttle body, cleaned all the carbon out and there was a ton of it, and also found 2 small air leaks in the air intake. Resealed them and have not had any hesitation. Thanks again!!!!