1. If your spark plugs are bad or are going bad, will the car begin to idle low and constantly lose power? I haven't changed them yet, and am wondering if that's my problem. I am going to change them anyway, but this problem has been going on for a few days, and i am thinking it may be this. If it's not, then what else could be causing this?

2. My transmission is starting to shift hard, feels like it is sticking in gear and then catching, and in the morning when it's coolest, if i put it in gear mostly in reverse, it is extremely sluggish. Do i need a transmission flush/refill? If not, then what could this be?

Thanks in advance guys,
John

 

1. yes, this could be the case. however, also check your air filter as well. if it is clogged, you will also experience loss in performance.

2. i wouldn't just drain the tranny oil, i would take the whole pan off and drain it that way. that way, it all comes out. plus, you can clean the pan and replace the tranny filter (gs4 has them).

 

Thanks quick, i will look into doing this tomorrow. I want to get this done asap, cuz i don't need these problems. Especially if it's an easy solve.

John