I have a 2001 Plymouth Neon,the belt for the power steering and air conditioner is not staying on so not woking any of these units.I have checked with some dealers and they are giving 2 different estimates ,some are saying I need the entire assembly anbd some are saying just the pulley,How would I know,does it come in 2 different part,etc.The car is not worth investing alot of money in but again it has a lot of life left also.Any help is appreciated.

This is correct if you are talking about the power steering or ac, the power steering pulley can be replaced with out the pump being replaced, now, if its the ac throwing the belt it depends on if the compressor is frozen or just the pulley is bad, if the compressor is bad then replace the whole unit, to same some money get a used one, if the a/c doesnt work ddo you care? because a used one may have problem but will hold the belt. hope this is helpful.