hey well yesturday i changed the oil and the air filter on my car. and i also changed the 2 front speakers on my 97 milly2.5. but a while after that. my car started bugging out. it was laking serious energy. for example. it would start as if it barely had power. and if i put the AC on full blast, and were to step on the brakes. the ac would soften and wouldnt kick as hard. also if i were to brake, my head lighst ould dim a bit. and if i were to blast up my radio everything would dim too. now today i took out the speakers and it still did it. any other suggestions?