Adjusting Idle RPM's
 

I'm sure this is here somewhere, but i couldn't find it. How do you adjust your idle? I changed spark plugs a few weeks ago, and since then, at startup the rpm's only go to 1200 instead of 1500, and the car feels a bit sluggish. At idle, it's around 600-700 like normal. Oh, and I did put in NGK coppers, the correct ones, so its not them.

If the warmed up idle (base idle) is at 600-700, then there is nothing for you to adjust (i.e. it doesn't need adjusting).

What makes you think you need to adjust your idle? At operating temperature your idle at 600 -700 is normal. If it ain't broke don't fix it!

Beat you to it :chuckle: Long time no see... hows the ARX treating you? (OT I know).

Hmm. I was thinking that. So what could cause the idle at startup only going to 1200 instead of 1500?

It's warmer outside. That is what affects where the idle starts off at. When the car is COLD, the idle is going to start higher than when it is warm (either because of the ambient temperature or because it was recently driven).

Wow. Learn something new everyday. Thanks for the quick replies.

Can someone tell me what the spark plug gap is for 97 max, thx

No. Can someone please read the stickies. :repost2:

Mine is about 900 when warm, is there a FAQ on how to adjust it?

Its the same as the gap on the 95, 96, 98, and 99. :lol:

It is in the stickies.

.044
10 char

Yeah just came across it, and JR nissan was the only ones carrying the OEM mats. $75US shipped. Thanks!

i love how people say they have a high idle problem, and then people suggest , oh hey, just read the stickys. and some people even say adjust your idle at the screw in the engine compartment.(99 on ecu) but the real problem with that is, if you didnt adjust it before or mess with it beofre, 99% of the time its a serious problem that has occured like a vacum leak. oh lets just adjust the idle to fix that problem... jeez

:sprint: to that :hide:

killcrap - with a vacuum leak, will your warmed-up idle end up settling at the 550-650 spec? I think that with a vacuum leak, you'll have a constant high idle...

if your reffering to a standard transmission, that spec is correct. but if it did have a vacuum leak the o2 sensor will see that, and will relay the infor to the ECM, and the ECM will command rich. and the Rpms will have a contant hig idle.

i'm reffering to the post above where his idle is 900rpms. most likely a small vacuum leak. get a scan tool and check the LTFT you can ignore the STFT.

and since someone mentioned the temperature, thats why your car is sluggish, its ****in hot out

I was looking in the stickes first and still cant find it

I've cleaned my TB and etc, and mines a round 900 and less. I never recalled seeing it this high b4.

Jesus, do you realize how old this thread is? It will be a little high after a TB clean. I use my ECU screw to adjust mine. :wall: I'm at about 850 or so.

1) Fast idle linkage or plunger broken or out of adjustment
2) Clean your TB
3) Check the resistance of the ECT sensor

errr ahhh, my guess is that he already solved his problem, being 3 years ago and stuff.