Hi my name its mike, the other day the service engine light came on my 97 3.1 lumina the car dint seem to have any problem except it was consuming a lot of gas (he,he,he) and i mean a lot so i took it to the local mechanic to do a computer scan he told me that the injector number one wasn't working that was the code, so i bought a new injector bought the gasket for the spider and i change it its been 3 days now and i cant use the lumina i can hardly maintain it given it gas when i give it gas it revs up a lot then it goes down again and starts to shake i have triple check alll the vacums hoses downloaded the vacum diagram i have double check the injector the gaskets everything and nothing seems to work.

any ideas...

Thanks

 

try spraying carb cleaner around the intake and hoses sounds like a vacuum problem