fotoman

94 6 cyl Maxima GXE

I have changed spark plugs, wires and rotor and that eased the vibration and rough idling but now the rough idleing has returned with a check engine light that stays on ... the car idles at around 75 rpm under the 1 and has a noticable vibration .... what might be happening what do I need to do? What is a normal idle speed?

Changing fuel injectors is a project over my head what is a reasonable price to get one if not all replaced at a shop and what type of shop????

Greeny

iTrader: (43)

Check the codes first..

how to check codes--> http://forums.maxima.org/4873104-post18.html

fotoman

Thanks this looks like something I can Do .......

fotoman

Going back to the idle speed question what is the normal speed and can/should/how is it adjusted?????

CapedCadaver

iTrader: (8)

first warm the car up and have all the accessories (a/c, radio, radiator fans, etc) offturn the screw thing on the ecu to the right (ecu is to left of passenger's feet behind black plastic cover), then go under the hood and adjust the screw on the IACV until you like the idle, then turn the screw on the ecu back to the left again. iacv is the cylindrical thing on the front-driver-side of the intake, sortof between the battery and the throttle body.

fotoman

ANYONE ....... Im a newbie so pictures are worth a thousand words to me if possible......
I know how to check the ecu but even with a clue i dont see this iacv

CapedCadaver

iTrader: (8)

blue circle = iacv's idle adjustment screw

red x = throttle body and sortof off-frame near the green x is the battery, as i uesd earlier for reference points

1991Maxima1991

iTrader: (3)

wow didnt know it was that easy to adjust our idle speed..... nice

sleepyvg30e

iTrader: (1)

if ur check engine light is on u need to do more than adjust idle i would suggest leaving it alone until u check the ecu codes first if no codes pop up (which probably wont happen) then clean the intake in this order
1 maf
2 throttle body
3 iacv
4 entire plenum

....if all that is clean and there are no ecu codes and the check engine light dissapears then try adjusting idle


btw did u adjust timing when u changed plugs wires and the rotor?

Greeny

iTrader: (43)

http://forums.maxima.org/3rd-generat...code-51-a.html

RustyMaxima

Do u need to do anything else other then turn that?

CapedCadaver

iTrader: (8)

for idle adjustment? no. if your idle is rough or low though, odds are there's something else you need to fix first. like a misfire or a vacuum issue or a maf issue, etc.