"Warbling" Sound on Deceleration.
#11
RE: "Warbling" Sound on Deceleration.
The exhaust is stock. It's definitely not exhaust noise. I'm leaning towards the gears as drbobvs suggested. Maybe it's the U-joints too...or the pinion bearing. This car has 98,000 miles on it.
#12
RE: "Warbling" Sound on Deceleration.
If you're sure it's not exhaust and since you added that you have 98,000 miles it could be the differential. Have you checked the pinion bearing and looked for excessive backlash? A loose or worn bearing won't usually make noise under load but will upon deceleration.
#13
RE: "Warbling" Sound on Deceleration.
ORIGINAL: Hicompression
The exhaust is stock. It's definitely not exhaust noise. I'm leaning towards the gears as drbobvs suggested. Maybe it's the U-joints too...or the pinion bearing. This car has 98,000 miles on it.
The exhaust is stock. It's definitely not exhaust noise. I'm leaning towards the gears as drbobvs suggested. Maybe it's the U-joints too...or the pinion bearing. This car has 98,000 miles on it.
#14
RE: "Warbling" Sound on Deceleration.
This past weekend, I changed the oil in the differential. I purchased a lube-locker gasket and 3 quarts of 75w-140 Royal Purple synthetic oil. I pulled the rear cover off. It was obvious to me the original owner had never had the fluid changed. I bought the car with 96,000 miles on the clock. The cover still had the factory grey silicone sealant holding it on. I figured with 98,000 miles on it the original factory oil might have broken down. So, I had high hopes that a flush and clean would eliminate the sound. I did not check the backlash with a micrometer while I had the cover off. I did howevergrasp the ring gear and rotate it up and down to see if there was any slop. There really wasn't.
What was interesting though is that there was a black slime covering all the internal parts and surfaces. I had to use two large cans of brake cleaner to wash all of the black stuff off of the interior of the differential case, ring gear and back of the cover.
So, I buttoned everything back up and this morning when I drove in to work, I still had the noise.
What was interesting though is that there was a black slime covering all the internal parts and surfaces. I had to use two large cans of brake cleaner to wash all of the black stuff off of the interior of the differential case, ring gear and back of the cover.
So, I buttoned everything back up and this morning when I drove in to work, I still had the noise.
#20
RE: "Warbling" Sound on Deceleration.
That means you have lots of highway miles and with proper maintenance those kind of miles are very easy on a car. I'm sure once you get your noise sorted out you'll have many trouble-free miles ahead of you.