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			Hello,  
I also have a 89 which displayed a similar condition.    
The click/clunk was only really felt when the car was stationary and turning the wheel from right to left or left to right, from the rack area (as you mentioned). 
 
I replaced the steering wheel u-joint and inspected the bearings, condition remained.   
 
Finally pulled the steering rack and had it rebuilt.  This corrected the condition.
		 
		
	
		
	
			
			
		
		
		
		
		
		
		
	
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