New LS1 Owners - Newbie Tech - What does your fbody idle at?

Mine is a perfect 1000rpms always start up wait 2min for it to sit there and warm up and it stays at 1000 always never above or below I found that kinda odd... lol but what is the stock normal rpm your car should idle at?

1000 revolutions per mile

1000 revolutions per mile


You mean per minute?

850, but I wanna get 725 so you can hear that 114LSA lope a lil bit.

is it better to be lower on these cars or higher? Just thinking if I should get a tuneup or not

mine is 1200 on start up and 785 normal idle. your car should idle higher ion start up (choke mode) then normal driving that is odd to me 2 i would check that out if your car is staying in warm up mode you have some more power on tap if u get that fixed!!! altho i might be wrong thats just wat i have always heard

mine is 1000rpms when i first start it up and goes down to about 800rpms.

Mine also at 1000 rpm at startup and then goes to around 800 rpm.

You mean per minute?

didnt get the joke.

my tach reads 900RPMs.

redline

I've just generally noticed it always around 1000. I actually think mines a little below that. As long its not more than 200rpm off, I really don't worry about it in general. Talk to some people that REALLY watch their cars, and they will tell you different, but for the general range, thats about right to me. My .02

alright I just checked to make sure anyways but if I start the car and let it run for like 5min I timed exactly it seems to go to 900 and sit there then. Does that seem right now?

About a 1000 on mine

My tach READS about 500 rpm idle once warmed up and in gear. I wouldn't necessarily believe this, but at the same time, my alternator will drop charging. Just putting it in neutral raises the idle maybe ~50-100 rpm's and the alternator will kick back on. Anyone else experience this?

The factory preset idle speeds for ALL LS1 F-bodies '98-'02:

550rpm in gear, 650rpm in park/neutral (A4)

800rpm (M6)

Idle will be higher at cold temps and on a cold start, but those are the numbers for a warm motor.

The only way you have a different idle speed is if you have custom tuning, or something is wrong with the car causing it to idle too low or high.

Don't pay too much attention to your factory tach. Mine shows an in gear idle of about 700rpm, but my scanner always shows 550 (+/- 25rpm).

1k on start up and 850-900 when warm

After startup mine will idle at 800-900rpm

1100-1200 cold and 850-950 warm but I have a real healthy cam in there.

800. :)

mine idles between 800-900 rpm

don't trust the tach...

haven't seen a ls1 car yet whose stock tach is dead on accurate. On the dyno, I found mine to be off almost 100rpm at idle, and lagging behind badly when running it at wot.

1999 T/A A4

ABOUT 1000 on start up

10 secs later 750RPMS

500-550RPMS IN GEAR

BABY RUNS SMOOTH!!!!

1100 at start up, 700-725 after warm up

The factory preset idle speeds for ALL LS1 F-bodies '98-'02:

550rpm in gear, 650rpm in park/neutral (A4)

800rpm (M6)

Idle will be higher at cold temps and on a cold start, but those are the numbers for a warm motor.

The only way you have a different idle speed is if you have custom tuning, or something is wrong with the car causing it to idle too low or high.

Don't pay too much attention to your factory tach. Mine shows an in gear idle of about 700rpm, but my scanner always shows 550 (+/- 25rpm).

Beat me to it! /thread!

Mines set to 850 with tuning, idles higher on cold starts of course. My stock tach is dead on for idle and cruising. It does however have problems keeping up going through the gears, but I have a shift-lite for that.

I set mine at 800 rpm's.

if your ls1 is perfectly healthy. after its warmed up it should almost idle at 500 rpms. 750ish in colder weather.

your engine will run 1000-1200 rpm while warming up. thats normal. but should atleast drop to around 750 range. after i seafoamed my car my rpms when back to the original 500 Rpms after it warms up. their is no lofting or chocking. its the perfect smooth idle.

700-800 rpm at idle.

hey sup brian. car still looking wicked. i just now got my allignment fixed on mine i had a Bent Spindle Arm.

My car used to idle around 1k no matter what. Driving or in park. Thought it was fine. Got a tune for the car and cleared up codes and whatnot, and it's just like the rest. At start is 1k, then it goes down to around 650-700rpms.

with the mods in my sig, 900 RPM. really brings out the cam lope at idle...

I idle around 800-900 after it warms up

I set mine at 775rpm at 175*F

m6s and a4s idle differently....but my a4 idles around 500

1000 on start up 700-800 at idle

about 1200 on start up and goes to about 500 - 550 after she is nice and warm

usually about 850

750-800