Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Junk Product

Purchased distributor last year it was installed and worked fine for 6 months. After warm up, car 's check engine light would come on car would stall and would not start for 30 seconds. Then car would start and run okay. Next morning same thing. After much aggravation and $600.00's later ( complete engine computer checkout) it was the CKP sensor in distributor that was cracked. So buyer beware at the least Amazon should offer a warranty.