Humm... Well things that make a car go are, an ECU, Spark Plugs, Wires, Dizzy, Fuel, Air lol... and a trany... So my guess would be proably something simple that hasen't been replaced in awhile... Example, Fuel Filter, Spark plugs, PVC valve, proably something small... 177k, Hope the filter was changed recently other wise I dont want to see what comes out of it when it gets changed lol, cause that means it could be gumming up ya fuel injectors too... but ya get it changed its wicked cheap like $13 bucks u could do it ya self, and get a bottle of fuel system cleaner and see how it runs after that