Where do I look for a loud pop in frontend when turning? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72farmer · 07-03-2010, 06:19 AM

Sometimes when I am turning at low speed like taking off from a stop I have this loud pop and i need to know where to look to fix.My truck is a 67 with drum brakes.

dznucks · 07-03-2010, 07:24 AM

Does it happen every time you turn? or only when you are going over a bump while turning?
Check the steering linkages. Google how to check steering linkages or tie rod ends, pitman arms, and idle arms. you can find a video on how to check for bad ones.

if you have a sway bar, check those bushings. If you still havent found anything, i bet its going to be a control arm bushing.

cdowns · 07-03-2010, 08:27 AM

have you ever greased anything in the front suspension? thats what those grease fittings are for.

68gmsee · 07-03-2010, 09:06 AM

Noises from the front end are not easy to pinpoint. Reason is that a lot of the components are under spring tension and it's hard to replicate the stresses of a 2K plus vehicle turning.

It could be ball joints, tie rod ends, loose shocks, a-frame bushings, steering, wheel bearings or even broken or cracked components. In my experience the most common thing to check when you have a noise while turning is the ball joints or tie rod ends and the wheel bearings.

I would start by checking the tie rod ends for looseness. Grab the shaft and twist it. If they move easily, they're worn. Next is to jack the truck and grab the tire on the top and bottom and see if you have any movement whatsoever. Repeat by grabbing the tire on the sides.

If you can't locate it, I'd take it to a shop that specializes in alignment. They have some special tools that they use to check things out.

norv struckman · 08-11-2010, 10:54 AM

Your profile gives no info on 2 or 4 wheel drive. Mt 72 FWD blazer popped until i noticed a change in streering wheel spoke orientation. Turned out one set of u-bolts was loose on the front differential housing and shifting (with a bang while backing and turning or making a circle or u-turn).

**michael bustamante** · 08-11-2010, 11:29 AM

Mine was the pitman arm popping and rubbing against the center link, The bushing was hanging on by a thread

07-03-2010, 06:19 AM	#1
72farmer Registered User Join Date: May 2009 Location: Hazel Green AL Posts: 286	Where do I look for a loud pop in frontend when turning? Sometimes when I am turning at low speed like taking off from a stop I have this loud pop and i need to know where to look to fix.My truck is a 67 with drum brakes.

07-03-2010, 07:24 AM	#2
dznucks Registered User Join Date: Feb 2006 Location: Smyrna, Ga Posts: 1,647	Re: Where do I look for a loud pop in frontend when turning? Does it happen every time you turn? or only when you are going over a bump while turning? Check the steering linkages. Google how to check steering linkages or tie rod ends, pitman arms, and idle arms. you can find a video on how to check for bad ones. if you have a sway bar, check those bushings. If you still havent found anything, i bet its going to be a control arm bushing.

07-03-2010, 08:27 AM	#3
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Where do I look for a loud pop in frontend when turning? have you ever greased anything in the front suspension? thats what those grease fittings are for. __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-03-2010, 09:06 AM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Where do I look for a loud pop in frontend when turning? Noises from the front end are not easy to pinpoint. Reason is that a lot of the components are under spring tension and it's hard to replicate the stresses of a 2K plus vehicle turning. It could be ball joints, tie rod ends, loose shocks, a-frame bushings, steering, wheel bearings or even broken or cracked components. In my experience the most common thing to check when you have a noise while turning is the ball joints or tie rod ends and the wheel bearings. I would start by checking the tie rod ends for looseness. Grab the shaft and twist it. If they move easily, they're worn. Next is to jack the truck and grab the tire on the top and bottom and see if you have any movement whatsoever. Repeat by grabbing the tire on the sides. If you can't locate it, I'd take it to a shop that specializes in alignment. They have some special tools that they use to check things out.

08-11-2010, 10:54 AM	#5
norv struckman Registered User Join Date: Nov 2009 Location: sacramento, california Posts: 22	Re: Where do I look for a loud pop in frontend when turning? Your profile gives no info on 2 or 4 wheel drive. Mt 72 FWD blazer popped until i noticed a change in streering wheel spoke orientation. Turned out one set of u-bolts was loose on the front differential housing and shifting (with a bang while backing and turning or making a circle or u-turn).

08-11-2010, 11:29 AM	#6
michael bustamante Senior Member Join Date: Sep 2007 Location: Albuquerque NM Posts: 7,862	Re: Where do I look for a loud pop in frontend when turning? Mine was the pitman arm popping and rubbing against the center link, The bushing was hanging on by a thread __________________ 1967custom

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