924Board.org

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

OK on my 944 the noise comes from the rear passenger wheel when I hit a bump. It's kind of a KACHUNK sound, like it's something heavy. I've had the wheel bearings changed (all 4 wheels) brakes and rotors done and all 4 shocks replaced. What else could it be!?!? it's driving me nuts and killing my paychecks.
TIA

7osh
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Anything loose in your trunk? How's the hatch look?

Check your suspension bushings and your muffler hangers.

Then have the shock mounting holes checked that they haven't worn sufficiently to cause them to move around.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

The hatch is tight and I took everything out of the compartments on the sides and the spare tire compartment. You might be on to something with the shock mounting holes tho. I'll have a look at that when it dries up around here. Thanks for the suggestions.
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

skemcin · Joined: 02 Sep 2003 Posts: 1284 Location: Plainfield, IL

You're using the wrong vehicle - borrow a Hummer and then try running over your spouse/girlfriend.

_________________
924.org (no time to complete)
9249206346 - 89k – new shifter bushings, belts, running well.
9249206347 - 8k – waiting its resurrection, no power at the fuel pump and fuse #7 blows w/power

Eska · Joined: 09 Apr 2010 Posts: 11 Location: Phoenix, AZ

May sound silly but I heard the same exact sound the first few days I had my 924. I could not for the life of me figure out where it was coming from. It sounded like every time I hit a bump my back shock was gonna come through the back of the car.

My husband and I drove it around the neighborhood trying to pin point where it was coming from. The culprit.........my moonroof locks were shot, every time I hit a bump the moonroof raised and slammed back down, not enough to let in light or air. We could have swore it was coming from the back area of the car, turned out to be right above us lol.

Just a suggestion, try popping out your moonroof, if you have one, while it's sitting, if it's not locked in properly it makes a pretty bad sound.

Also on my 924 I have those "secret stash" areas in the back, near the wheel wells, on the inside, the carpet lifts up, make sure there are no tools not secure back there. I found 20 years worth of random junk in both sides of mine that were rattling around.
_________________
1988 "Please Pull Me Over" Red 924

1995 Dodge Ram 1500 with 6'' Lift - For hauling all my friends junk around and rainy days.

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

Eska: Thanks for the suggestions. I'm pretty sure I've had the roof out and still heard the sound, but I'll pay more attention to it now

Yes, I've taken everything out of the "secret compartments" along with the spare tire.

I think I may have found what the culprit "might" be. I got under my car today and grabbed my axle and I gave it a good shake (does that sound dirty?) and heard a very similar noise. Could the boots be empty? (no grease) How hard is it to grease them? Or would it just be my axles are bad?

7osh
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

Grenadiers · Posted: Thu May 20, 2010 7:32 am Post subject:

If it were the CV axles, you should 'hear' them when taking off, turning around corners at speed, etc. No grease in boots, just dust covers.
_________________
'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

John_AZ · Posted: Fri May 21, 2010 1:57 am Post subject:

Joes924Racer · Posted: Fri May 21, 2010 2:17 am Post subject:

If you do this use cv grease during the job it is a special
grease for cv joints highly recommended.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

headstrong2740 · Joined: 29 Apr 2010 Posts: 111 Location: Moline IL

if its not the CV axles.. check your exhaust... i ran into a problem with mine doing it too when i drove mine. The exhaust was a little loose and hit the underside.

Also i would look your bushings too. If they are looking rough and/or missing you might have an issue there too

Just my 2 cents

Chances are the CV sounds like the culprit though. I have to replace my boots and grease when i get home next year.

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

Just got the grease and the jelly beans from Pellican today

7osh
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

How about some of these to go with the newly repacked CVs:
http://garage.ideola.com/prod-Stage8.html

_________________
erstwhile owner of just about every 924 variant ever made