Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Accel ignition module for Geo Storm SOHC

I installed the Accel 35362 control module in a 1991 Geo Storm with the SOHC engine. It worked fine after the engine was running, but caused it to stumble and be generally hard to start.I drove the car daily for two weeks with the unit installed hoping the problem would go away but it did not.After replacing the Accel unit with the stock module the car started with no problems.