Skyfire

iTrader: (12)

when i move slowly and stop or pull up to a light my idle always sits around 450 to 500 and the idle is very poor, it is always jumping up and down and will occasionally drop to 200 or 300 and rarely it will die. any suggestions?

krayzie7th

do you still have your egr valve? if you do try cleaning it and putting it back in that might be a place to start.

Skyfire

iTrader: (12)

i don't have it, it was supposed to have been tuned out. but if it wasn't could this be causing it? i should be getting hp tuners next week and will be tuning all egr and rear o2's out if they aren't already.

krayzie7th

yea it could be causing your problem,the tune should fix it if thats the problem.

TheLS1Kid

iTrader: (12)

Try cleaning your air filter and MAF.

Skyfire

iTrader: (12)

i'll get a new airfilter, but how do you clean the maf? it is descreened already.

john shea

I had idling problems and tcs and ses lights. I plugged up my intake with
an 1 1/2" dia. plumbing part with a wing nut and it solved all my problems. If its sucking air this could be your problem.

TheLS1Kid

iTrader: (12)

Advance auto sells this CRC MAF cleaner.

You just take the MAF off and spray it with this cleaner. It dries in like 5 minutes.

Skyfire

iTrader: (12)

what now?

ravensfan

iTrader: (5)

When I first bought my car, it had a rough idle. Turned out to be dirty fuel injectors. Had them flushed out and its been great since.

ae13291

iTrader: (8)

this could be a MAP sensor or a TPS sensor but im not to sure! u could start off by cleaning the MAF and if its clogged injectors you will get a SES code but do u have any ses codes right now? o and could also be a vacumm leak as well

fuseone

vaccum leak?

Skyfire

iTrader: (12)

i'll work on cleaning out the maf.. can you guys kinda guide me through checking the vacuum leak? and the only codes that i have are pending codes and they show both rear o2's are running rich i think, and egr is taken out(the ses light is not on but they show up)

Sharpe

iTrader: (7)

No, but I don't know what is.

EDIT: and don't even look or think about rear O2 codes. They do/mean nothing when you remove the cats.

ae13291

iTrader: (8)

humm im guessing maybe if your o2 are sensing that there is more fuel but not enough air maybe it can be a vacum leak!!! how is the idle is it vibration or does the rpm just move up and down???

Skyfire

iTrader: (12)

when it drops really low it vibrates but it isn't just vibrating all the time, and when i say drops low i mean drops to around 400. and i wasn't looking at the o2's as a problem, i know not having cats will make them go crazy

ae13291

iTrader: (8)

o crap i dident realize u dident have cats, hummm if i were you i would start off with the simplist thing i can think of which is a vacuum leak!! anything little like a ripped air intake duct after the filter can cause problems or a crack in your manifold or loose manifold bolts!!! but b4 you check this clean out your MAF like how some of the other people also mentioned, they sell the can at autozone or kragen, any autoparts store. let me know how everythings goin goodluck

Skyfire

iTrader: (12)

thanks! i will post up a reply tomarrow after i clean the maf and replace the air filter

Skyfire

iTrader: (12)

maf cleaner and new air filter did not help. also the idle sits right at 600 when the car is in neutral or park, it only jumps around when it is in gear

JonSS_Tex

iTrader: (7)

have u tested your iac valve located on the side of the throttle body? unbolt it have a friend hold it vertical while you go put the key in the ignition and turn on acc.s. dont have to start it ..see if the plunger moves...do it a couple of times. this controls idle as well. if plunger does not move buy a new one