How much should a timing chain replacement cost? on 1994 Buick Regal

My car has 120,000 miles on it and I've just started noticing a problem. My mechanic told me @ 6 months ago it would need to be replaced soon.

by in District Heights, MD on January 05, 2013
3 answers 3 comments
ANSWER by on January 05, 2013
it should be about $500-600
ANSWER by on January 05, 2013
What kind of problem have you just started noticing? Which engine do you have?
COMMENT by on January 06, 2013
I've had the injectors replaced @ 3 months ago and just had the platinum plugs replaced. I just started noticing that when excellerating, sometimes between 55 - 60 mph I get slight hesitation. I had my mechanic drive it on the highway and he said he could hear a "ping" sometimes which was the chain hitting against the timing chain "housing". I have a 3.8 engine.
COMMENT by on January 06, 2013
I would get another opinion! Can't hurt.
ANSWER by on January 05, 2013
what motor do you have and what are your symtoms
COMMENT by on January 06, 2013
3.8 engine, sometime a slight hesitation and shaking between 55 - 60 mph. Most of the time it's a smooth transition. Just started doing it, have had the injectors replaced @ 3 months ago and just had the platinum plugs replaced.