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Registered
Join Date: Jun 2004
Location: Ireland
Posts: 30
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Bad bad noises from Backend...help!
Hi guys,
It has been a while since I last frequented this site but I now that I am in trouble I return.. I know that's bad but please don't hold it against me :-) Recently, I have started getting a clicking noise coming from the rear end of the car (1987 Porsche 944S). Noise increases in frequency with speed, isn't always present and disappears as soon as I dip the clutch. When I am in the car on my own, it sounds like it is coming from the differential area. I have had the car up on blocks and checked the CV's, checked for any leaks etc. The clutch appears to be good and the gearbox changes perfectly every time. Does it sound like the diff? How could I test it? Any help, as per usual is much appreciated.
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Colm Deasy, 1987 Porsche 944S with 101K on the Clock! |
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02-21-2006, 04:02 AM
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Writer/Teacher
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Probably either the clutch or CVs.... the fact that it happens when you dip the clutch makes me think that your rubber centered clutch is failing; but not necessarily, for my car seemed to do the same thing when my CVs were clicking.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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02-21-2006, 05:51 AM
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Join Date: Nov 2005
Location: Visalia, Ca
Posts: 1,327
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I had same problem. Clicking apears at low speeds.. and at faster speed's goes away.. then at times its on and off.. but when i put it in neutral it makes no noise. I guess the extra force when then tran's in gear makes it click/grind more. I repacked them with grease the ones i thought were bad.. installed them back in and the outside cv locked up. So i just replaced it and never had any noise since
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Jaime O. Thank god I crashed or i would never have owned a porsche 83 944 daily driver (clutch and tt time) 85 325e BMW T-boned R.I.P. |
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02-21-2006, 09:08 AM
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If you suspect it's in the rear differential, drain the oil and look for metal. If you haven't changed it recently, it might be a good thing to do anyway.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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02-21-2006, 09:54 AM
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Join Date: Oct 2005
Location: San Diego
Posts: 703
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RE-GREASE the CV Joints. Write-ups on Clarks Garage. Its' cheap and not too hard. That's where I'd start.
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1987 924S with 968 Drive front to back, Bilstein Insert on mod/stock Struts, 450# Hypercoils, 28mm Torsion Bars, Weltmeister Adjustable Sway Bars, Lindsey 968 Light flywheel, Spec Stage II Clutch, ToYO RA1's, Auto Power Cage & 6 pt Harness, KLA Strut Brace, Greasy hands, heavy foot, and lots of smiles |
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02-21-2006, 11:08 AM
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Join Date: Jun 2003
Location: Leonardtown, MD
Posts: 838
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I had this in my 94 trans am until I drained the trans fluid. Made the differance for me.
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1987 944 - Wrecked turned parts car 1986 944 - Awesome Auto |
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02-21-2006, 11:36 AM
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Writer/Teacher
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Quote:
 I only really hear the noise periodically during the summer. I will resurrect this thread if it turns up again. 
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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02-21-2006, 07:50 PM
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Join Date: Apr 2004
Location: Chicago
Posts: 729
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cdeasy
When u say u checked for leaks u shouls be checking to see if the boot is dry. When I had my cvs inspected the boots were bone dry. Cleaned and regreased them and everything is fine. NOTE: CVs require a special CV grease not just any grease.
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88 928 S4 Black, Black and Grey Interior Alpine head unit & amp, Bazooka Tube, Viper 5704 Smart Start GPS tracking, Devek Headers, Flowmaster 40 3" with Resonator, Auto Authority chips. Custom Luggage Cover. Traded - 86 944 Turbo Guards Red. RIP - 85.5 944 Guards Red |
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02-23-2006, 08:10 PM
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Dog-faced pony soldier
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Quote:
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A car, a 911, a motorbike and a few surfboards Black Cars Matter |
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02-24-2006, 09:37 AM
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2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
