Knocking Under Acceleration

nickvash0104 · 11-03-2006, 12:41 AM

Hello everyone,

On my 87 NA Automatic, I'm getting a knock under acceleration. The noise is coming from around the transmission / driveshaft and I'm suspecting a bad u-joint. The engine was replaced in April and I've had no problems since then. Some points to consider:

*It occurs intermittently.
*Usually happens in the 2200-2700 RPM range in drive.
*Does not occur in neutral, reverse, or park.
*All fluids topped off.
*When letting off the gas, it stops instantly and usually does not resume when giving it gas again.

What just confuses me is that it happens intermittently, seemingly without a pattern.

Suggestions?

11-03-2006, 12:41 AM	#1
nickvash0104 3" Exhaust Join Date: Aug 2005 Location: Dallas, TX Posts: 78	Knocking Under Acceleration Hello everyone, On my 87 NA Automatic, I'm getting a knock under acceleration. The noise is coming from around the transmission / driveshaft and I'm suspecting a bad u-joint. The engine was replaced in April and I've had no problems since then. Some points to consider: It occurs intermittently. Usually happens in the 2200-2700 RPM range in drive. Does not occur in neutral, reverse, or park. All fluids topped off. *When letting off the gas, it stops instantly and usually does not resume when giving it gas again. What just confuses me is that it happens intermittently, seemingly without a pattern. Suggestions? __________________ Black '87 N/A Auto