Njmaxseltd said that an auto should idle in drive about 6-650, and in nuetral/park- about 750. Mine idles at 500 or just a hair above 500. I was able to lesson the vibration I was experiencing after replacing the spark plug that was messed up with a new one-its crazy how slight imperfections in a plug can translate to engine performance- these engines are very sensitive it seems. Right now my car idles at around 675-700 in park. if i were to lightly press the accelerator to about 750-775, would this be a good indication of how the car will feel after adjusting it using the screw? Sorry if this is a dumb question- also please post your idle speeds in park and drive. I want to eliminate this shake completely. Does anybody here idle at 500 with no shake? Thanks guys

 

Mine is D=650, P=750
Suggestion: clean your TB (if you haven't already done it)

 

i idle at 500 no shake, i cleaned my tb good to

 

Isnt 500 too low? When you say- no shake- do you mean no violent shake or that you don't even feel the wheel lightly pulsating? Is the wheel practically dead? When these cars come from the factory- what do they come at.... idle at 500 or 650? Maybe the car is supposed to be at 500 but there is something else that is still causing the slight shake.

 

well the steering wheels slightly vibrates but hardy noticble
i think i need to clean the IAC valve or somthing like that

 

me thinks:

DRIVE (under no load) --> 650
DRIVE (under load) --> 550?
PARK (under no load) --> 800-ish
PARK (under load) --> 750-ish

these are all guesses...but good guesses!

FLO_BOY

 

Hmm..only paid attention while in park..
When I first start the car: 1000 or so.
Once warmed up: 750

 

warmed up under no load: 750 RPM
Warmed up under load: 1000 RPM

Did a TB cleaning about a month ago. Not as thorough as the first time, but enough to drop my idle by about 200 RPM.

 

Not Warmed Up ~1100
Warmed Up in D (fully stopped) ~750
Warmed Up in P ~700

Going to clean TB and change plugs to NGK probably this weekend.

 

whats a tb clean ?

 

Throttle Body Cleaning http://www.motorvate.ca/mvp.php/517

 

Manual tranny: 600
a tune up and tb cleaning really helped my car. the car was dying at stop signs and redlights , not any more ..runs like new

 

i idle at about 750 as well once warmed up in neutral/drive.

 

While you are cleaning your TB, you should clean your IACV as well. I highly recommended. It’s very dirty after 30K driving.

 

whoops, i actually meant neutral/park lol.

 

just above 700

 

Start up: spike to 1500, settles at 700
Park: 700
Full stop in Drive: 600
...and I don't clean shiznit!

 

Park/Neutral: 700-750(Mentioned Previously)
Drive:600-625

 

how do you raise the idle?

 

There is a black plastic screw on the idle intake thing. Just grab a phillips screw driver and turn it, i dont remember which way, but thats it. If you dont know where the IACV (or whateveryou want to call it) there is a hose coming off the resonator or mid pipe (what ever u got) that goes to it.

 

here is a pic

 

here is a pic

 

thanks for the pic, i will try it tomorrow.

should i adjust that screw with the car on or off?

what about that little screw (gold) right at the end of the gas cable? it has a philips in the middle with a nut on the out-side. do i have to adjust that too?

 

actually i was a little off on my idle the first time which was why i posted it again

 

yeah my friend did something like that on his '92 Diamonte

 

the car should be running...

also, this screw really shouldn't get too adjusted...I think that
the screw is set at the factory, and shouldn't really be moved...

personally, I think that if your car DOES have an issue causing
a low idle that you should try to fix it (rather than mask it).

just my $0.02,
FLO_BOY

 

97GLES

Before doing idle adjusting, you should first clean your TB and IACV. It smoothed out the idle for me. You need to buy a TB cleaner and take apart the TB and IACV and gun it.

 

i don't think anything is wrong with my car but to me i think that the idle is just a little low. the car runs fine and doesn't shake at all.

thanks for all the reply, Freddie

 

97 auto with 33,000 miles
just started - 1000rpm
warmed up - 650 rpm