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popping sound when accelerating, reversing

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  #1  
Old 08-13-2010, 10:46 AM
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Default popping sound when accelerating, reversing

this has been happening since ive had the car. when i put the car in reverse or a different gear, i hear the pop. also when im accelerating and the supercharger kicks in. its really scary cuz it sounds as if the tranny or downshift cable is shifting all the way into gear or something. anybody know about this or expirience this?
 
  #2  
Old 08-13-2010, 10:56 AM
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Possibly check your engine mounts/dogbones?? Also, check under the car by the trans, make sure the 2 bolts are tightend all the way. other than that, it sounds like it could be somthing wrong?
 
  #3  
Old 08-13-2010, 11:32 AM
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is it as you turn too? cuz mine does it too, its my struts or ball bearings, havent worried about it too much yet tho
 
  #4  
Old 08-14-2010, 01:58 AM
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nah it doesnt do it when i turn. i think wht02monte might be right about it. ill have to get it checked asap.
 
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Old 08-14-2010, 02:10 AM
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hmm...ill check mine too then, maybe thats it, because i turn while i accelerate, i need struts anyways tho haha
 
  #6  
Old 08-14-2010, 02:22 AM
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I read something about this a while ago. There is a GM TSB about this but i havent been able to find it again, something about the engine cradle welds and a loctite repair but i can't seem to find it again It's very annoying mine does it to. If anybody has a link to the tsb post it up.
 
  #7  
Old 08-14-2010, 02:55 PM
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you might want to check the strut tower brace and make sure that it is tightened all the way down
 
  #8  
Old 08-15-2010, 02:26 AM
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Default I searched and searched ......

...And look what i found on some auto repair forum site. I just copied it right from there but it seems to be all of the info to make this repair.
Reference #: CAR 2002 04

Document Title: CLICKING OR SNAPPING NOISE FROM FRONT SUSPENSION - CAR APRIL 2002 - HIDL

Condition:

Cause:

Correction: Apply Loctite with special applicator

We have dealt with this issue once before on TAC TALK, and at that time the noise was believed to be only from the steering rack support brackets, since then other areas of the cradle have been found to create the noise.

It's important to diagnose this noise correctly. The cradle may require shimming to prevent a pop type noise.

- If the customer comments on a noise that occurs only on launch or during deceleration, reference Service Bulletin #00-08-61-003.
- If the noise is evident when turning the wheels with the car stationary, the noise may be from the engine cradle assembly.

So today we're going to show you the latest repair procedure for the clicking or creaking noise from the Impala and Monte Carlo cradle.

- This noise occurs at the steering gear brackets and the rear corners of the cradle while stationary or during low speed turns.
- This repair for the cradle noise will require Loctite 290, non-chlorinated brake parts cleaner and a syringe to apply the Loctite and you will also need a heat gun.

These procedures can and should be done in the car:
- Start by cleaning the surfaces with a degreaser. Make sure you remove any dirt and oil at the joints where the Loctite will be applied. Start at the steering rack brackets and completely clean the welds and surfaces.

- Next, clean the joints between the left and right body brackets and the cradle. Make sure that you clean all contact points since these are areas where the Loctite will be applied.

- Next, use the heat gun to dry the solvent, and wipe off the residue with a clean rag. Make sure there is no residual solvent in the welds and joints.

- Now we will apply the Loctite 290 using the syringe. Place a catch pan under the application area to catch any Loctite that runs off. It can be reused during the procedure.

- We will start applying Loctite at the top joints of the steering rack brackets. Pool it in this location so that it flows into the joint. Apply the Loctite on both sides of each bracket.

- Next apply it across the bracket welds and pay particular attention to the ends of the welds. The reason we are applying it to the welds is to fill any micro cracks and pin holes. If the cradle that you are working on does not have vertical welds on the brackets, make sure you flow, sufficient Loctite into the vertical joint.

- Next we need to inject 6ml into each hole under the steering rack brackets. The Loctite must be injected up into the corners. Rapidly depress the plunger while moving from one corner to the other. After completing both holes, inject 10ml into each gap between the body brackets and the rear, cross member.

- Then we need to apply Loctite to all the welds of the right and left body brackets.
The right side will require 18ml and the left side will require 15ml of Loctite. Again pay particular attention to the ends of the welds.

- Each side has ten welds that require Loctite

- The last thing to do is to lower the car from the hoist, start the engine and then turn the steering wheel lock to lock, twenty five times to work the Loctite into the joints.

- Park the vehicle for 24 hours to allow the Loctite to set up. Once the Loctite is set up, the noise will not come back.

Many methods to eliminate this noise were evaluated, and the Loctite provide the best results for a long-term repair.

Click here to go to Attachment (if any) --------> Attach images here if any

Keyword Fields
Year: 00, 01, 02
Division: Chevrolet
Model: Impala, Monte Carlo
Carline: WB
Engine:
Transmission:
Service Manual Section: 03 - Suspension Wheels & Tires
Qualifier: front, suspension, noise, repair, information
 

Last edited by lougreen03; 08-15-2010 at 02:28 AM.
  #9  
Old 08-15-2010, 11:09 AM
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^^^ thnx for that info man. im not gonna try that anytime soon though lol
 
  #10  
Old 08-16-2010, 01:47 AM
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yeah seems like alot i'm gonna be under the car in a few weeks to change the oil and i'll look around then to see if i can see anything strange looking
 


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