1998 Jaguar XJ8 Noise after belt and belt tensioner change

Engine Mechanical problem
1998 Jaguar XJ8 V8 Two Wheel Drive Automatic

Jaguar XJ8 only 44000 miles. At service, belt changed, returned with terrible squel, went back changed belt tensioner, returned on cold start up best described as ratchet noise for about 10 seconds, then ok No noise on warm startup. No problems or noise prior to service. Looking closely belt may be mis aligned-would this cause noise, or is it more seriousIs this 3.2 version the ones with the inferior chain tensioners