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My vehicle is California emissions and after hours of research . I saw that I had to buy a California exhaust system to fit my car which I have from rockauto. Now I see that the cat converter has no port hole for my already there air sensor plug to install into. My old cat converter had a port hole just past the cat.heading towards the muffler. I can't understand what's going on. ? Either I have the wrong cat or my exhaust system was modified ?? I don't know and can't tell? Thank you kindly tony

Alternator is putting out 14 to 15 amp but the battery is only receiving 12.6 the alternator was tested separately

This has never happened before

Whenever I drive my car it downshift buy and sell to 1st or 2nd gear and I change the input speed sensor on it because the check engine light came on and it's still doing it

It was driving fine and when I sat in park for a few minutes and then started to drive again it would only go 10 mph

in the trunk or behind the back seat where passengers sit in back of the car?

Makes a loud noise when initially pulling off or turning.

po449 code is on and have checked selonoid and it clicks when checked with a 12 volt battery? please help if possible

The carfax report shows 107,016. I suspect the odometer has been replaced. Your thoughts?

Car was driving and rmp gauge started jumping but not engine rpm and then the engine died and won't start again. Car has been setting for a year or more. Oil coolant and trans fluid are all good.

Just started about a month ago

My tale light and dashboard light in not coming on what do I need to do

oil gasket leaking,see no oil pan cover.

Always. Note 250,000+ miles

I had the throttle body replaced and the pcm replaced and reprogrammed on the car on11/15/16 when I got it back the traction control light was on and the car said service advance Trac.