when i start my tsx after its been sitting for several hours the rpms jump up and idle at 1500 and they sit there for a long time untill i put the car in drive or reverse then it drops to 1000 is it normal to idle that high it dosnt do it if the car hasnt been sitting very long from a previous start up

 

with these cars, on cold start up, it is designed to idle high. the engine throws fuel on the cats to get them warmed up faster.

 

ok thanks ive just never had a car that idles that high at start up and wanted to make sure that was normal

 

lets wait for another 2nd gen TSX'er to confirm.

as this is the case with the 3rd Gen TL.....my car idles at 1k on cold start ups. then it drops to about 800-900 in about a minute.

 

My 2010 does the same thing, I assume it's normal. Start car, revs to 1500, slowly dropping to a lil under 900. If I shift out of park, it instantly goes down

 

okay, then it is the same as what I described.

for EPA/CAFE reasons, the car idles high which throws fuel on the cats to get them warmed up quickly.

 

my start up idle is HIGH as hell. i just told meself "YOUR INTAKE IS TAKING IN SO MUCH AIR THAT IT IDLES HIGHER!!"



but yeah, mine does the same thing.

 

yeah it sounds like everyone has about the same issue then soon as you take it out of park it drops back down i was worried i had a bad sensor or something

 

I posted on this a couple of months ago, and the idle speed is still an issue for me. However, further experience is showing that it's more than an idle problem. I do a lot of local, side street neighborhood driving, and it's a real chore to keep this thing under a 25 mph speed limit. I'm not a mechanic, but it seems that if the auto transmission is in third, it's gonna go 35 mph whether you touch the gas pedal or not.
Is this the way it's supposed to work?