2000 Chrysler 300 Grinding Noise

KAMALLOY

MEMBER
2000 CHRYSLER 300
6 CYL
2WD
AUTOMATIC
54,000 MILES

Grinding noise from front wheel not sure which one Grinding most noticable when there is no load on the power train accelerating or braking=no noise coasting =noise. Noise is pulsating not a continous grind.
Brake pads checked and have plenty frictiopn mat'l left - rotors are smooth

5 Replies

MERLIN2021

MECHANIC
17,250 POSTS

Any recent work on it? If so what?

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Sunday, August 30th, 2009 AT 7:18 AM

KAMALLOY

MEMBER
3 POSTS

Last work done:

90 days ago had tires rotated

6 months ago - Steering Rack- had both inner tie rod
bushings replaced followed by Wheel alignment.(Reason for replacement of inner tie rod ends was excessive play in steering wheel ).

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Sunday, August 30th, 2009 AT 1:29 PM

MERLIN2021

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17,250 POSTS

When was your last brake job? Grinding is almost always the brakes, growling at 35 mph is front hub bearing.

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+1

Monday, August 31st, 2009 AT 2:56 AM

KAMALLOY

MEMBER
3 POSTS

All brake discs have ample pad left, Rotors are smooth. This noise occurres during the "coasting" phase of driving. At acceleration - no noise, at braking -no noise, at the coasting phase of approx 30MPH (No acceleration and no braking) the grinding noise is present. It is now clear that the noise is coming front end of this front wheel drive vehicle.
Thanks

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Monday, August 31st, 2009 AT 9:46 AM

MERLIN2021

MECHANIC
17,250 POSTS

Found this one for you...
AUXILIARY DIFFERENTIAL VENT TECHNICAL SERVICE BULLETIN Reference Number(s): 21-05-98, 21-10-99, � Date of Issue: � June 25, 1999 Superceded Bulletin(s): 21-05-98, � Date of Issue: � March 20, 1998 Related Ref Number(s): 21-05-98, 21-10-99 ARTICLE BEGINNING AUXILIARY DIFFERENTIAL VENT Model(s): 1993-2000 Chrysler (LH) Concorde, LHS, New Yorker, 300M 1993-2000 Dodge (LH) Intrepid 1993-2000 Eagle (LH) Vision 1997-2000 Plymouth (PR) Prowler Group: Transmission Bulletin No.: 21-10-99 Date: June 25, 1999 NOTE: This bulletin supersedes Technical Service Bulletin 21-05-98 dated March 20, 1998. OVERVIEW This bulletin involves installing an auxiliary differential vent and changing the differential fluid. DISCUSSION An auxiliary vent tube assembly has been released for service to provide improved differential case venting. In cold climate areas, under certain driving conditions, pressure can build up in the differential case forcing fluid out through the primary vent tube at the top of the differential. Fluid can collect on the top of the differential case and/or drip to the ground. SYMPTOM/CONDITION Differential fluid buildup near the differential vent and/or dripping on the ground. DIAGNOSIS Inspect the top of the differential for fluid. Fluid may drip down the side to the ground.

REPAIR PROCEDURE Clean all fluid from the differential case. 1. Drain the differential fluid by removing the differential drain and fill plugs. 2. Install the differential drain plug. Tighten to 7 N.m (60 in-lbs.). 3. Fill the differential with 32 ounces of Mopar 75W-90 Gear Lubricant, P/N 04549624. 4. Install the revised differential fill plug from the vent tube kit. Tighten to 47 N.m (35 ft-lbs.). 5. Install the new vent tube assembly into fill plug and orient the tube between ribs on the differential cover ( Fig. 1 ). 6. NOTE: Be sure vent tube is not contacting any metal surfaces on differential cover. WARRANTY INFORMATION POLICY: Reimbursable within the provisions of the warranty. TIME ALLOWANCE: 0.3 Hrs. LABOR OPERATION NO: 21-10-10-90 FAILURE CODE: P8 - New Part Fig. 1: Auxiliary Vent Tube Assembly Installation