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88 rear end noise

Paul G

Well-known member
Joined
Aug 27, 2001
Messages
200
Location
Griffith, IN, USA
Corvette
96 CE LT4 Convertible
I have an 88 4+3 (Dana44). There is slapping type noise coming from the rear when I get on the gas and let off. What could this be?
 

JT ZR-Won

Well-known member
Joined
Dec 6, 2000
Messages
1,273
Location
Bradenton, FL
Corvette
'90 ZR-1 #365 (SOLD...but Dad's got it now)
Is it a stock rear end gear or has it been changed? And is the sound consistant?.....meaning does it happen only at a certain speed or RPM?
Jay
 

Paul G

Well-known member
Joined
Aug 27, 2001
Messages
200
Location
Griffith, IN, USA
Corvette
96 CE LT4 Convertible
As far as I know it is the original 3:07 gear.
It hapens in any gear. Give it some gas and let up and you can hear a slapping noise. I noticed it one day lugging the engine in 1st gear at very low speed, the car would lurch back and forth like there is a lot of play in drive train?
 

Ken

Gone but not forgotten
Joined
Jan 30, 2001
Messages
8,236
Location
Hermosa Beach, CA
Corvette
1987 Z51 Silver Coupe
I can't help ya other than to suggest checking all six u-joints to begin with.

I notice that "slapping" noiser of which you speak, come up occasionally as well in mine, but I've written it off in the past, as being part and parcel of the computer controlled devices.

Cars just ain't what they used to be; I can remember lugging an engine way down on the rpms, yet not have it buck and jump around. Now you can't seem to do that, what with the way the TPS and IAC and all the rest of the car is controlled by that ECM (or whatever the latest acronym is).

The first thing I'd check would be the u-joints, then get into the rest of the drive train (bearings, lash, etc.).

Good luck and keep us informed Paul. ;)

_ken
 

Hib Halverson

Technical Writer for Internet & Print Media
Joined
Jan 10, 2001
Messages
13,452
Location
CenCoast CA
Corvette
71 04 12 19
Check the bolts in the torque beam.

There are two at each end.

Also the powertrain mounts at the rear.
 

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