99zconv

iTrader: (1)

Car idles at 1300 after these mods. Ported throttle body from a sponsor here, throttle body bypass, free egr mod, and descreen maf. Car is a 99 Z28 with 6 speed. The rest of the car is stock. Before I took it for a 15 minute ride I sprayed Wd40 around and got no reaction when I got back it idled at 800. Then I turned it off and waited a minute. I turned it back on it idled back at 1300. Does it need time to relearn? I wiped off the IAC motor it was dirty. Should you be able to move it by pushing on it? I could not.

99zconv

iTrader: (1)

Ttttt

2000badbird

iTrader: (5)

i would say check your egr into the intake for a leak that will cause a high idle

keliente

iTrader: (22)

I would take a closer look at the TB. Maybe they took a little too much material off of it.

99zconv

iTrader: (1)

2000badbird, I sprayed wd40 all around the egr on top and the engine did not speed up.
keliente, how can you tell if it is too much?

Smokin87TA

iTrader: (183)

First of all do not spray wd40 around the motor, spray brake clean or carb spray. It sounds like a vacume leak to me. Did you send me the tb with the sensors on? There is an orange o-ring that is under the iac that might not be there. I would also check the idle screw, sometimes they move around when i port them. I can assure you that i dont take off too much, i have done over 200 so i am well aware what to do lol.

It could be something with your iac as well. you could try resetting it, then go for a 20 min drive and it will relearn its self. Tim

Smokin87TA

iTrader: (183)

just noticed you did the egr mod as well, i am assuming that the plate is not sealing to the intake. check that first of all, The reason for a idle around 1300 rpm is a vacume leak, this has to be after the tb blade. If you car was say idleing at like 800-900, then i would look towards the tb. Tim

EndlessSummer85

Also check to make sure the vacume line from the valve cover to the tb didn't fall off when you put it on. Sounds stupid, but that could do it.

99zconv

iTrader: (1)

Smokin87TA, thanks for responding, I didn't fiqure there was a problem with the throttle body but I wanted let everyone know I may have messed something up reinstalling it. I will get something else to spray. I removed the iac and reinstalled it with the oring. I will let you know after spraying it again. Thank you.

Rothman

iTrader: (4)

Sounds like a vacuum leak as the other guys stated. Did you descreen the MAF yourself? Most guys here don't reccommend descreening because there is a very high chance of trashing it.

99zconv

iTrader: (1)

I descreened myself. I sprayed carb spray all around and got no reaction. Moved the idle screw one half turn no change. How do you reset the iac?

bad6as

iTrader: (17)

how does the iac reset?

99zconv

iTrader: (1)

Anyone, how do you reset the iac?

stangbangin69

iTrader: (26)

sounds to me like a vaccum leak around the egr hole.. spray some carb cleaner round it see what happens..

99zconv

iTrader: (1)

I sprayed around everything with carb cleaner and got no change.

Hersker Hans

I just removed vats with hpt and fired up my 2004 gto Engine inn a nissan today. Ive got the same things. idles aroun 1350 rpm. i've removed the evap thingy, and plugged that whole.

99zconv

iTrader: (1)

Well my car seemed to be relearning and was idling more at 800 rpm most of the time. Then it went back to 1400 rpm steady all the time. It got a light which came on and went off which I had read. Both banks rich condition.
I know this happened at about 45 mph in fifth gear. What is my problem?

The Hammer28

iTrader: (10)

I had this exact same problem over the weekend. I believe that I figured out that it was the bleed hole in the throttle plate. Did you port your stock or buy a new one? I put the old one back on and it idled fine. It only took me about 15 mins to switch them out again and that's the easiest way you'll figure out if it's a vacuum leak or not. Check out the thread.
.
https://ls1tech.com/forums/general-maintenance-repairs/721254-idle-problem.html

99zconv

iTrader: (1)

I don't have another one to try. I don't understand why it got better then worse. I sprayed carb cleaner all around and got no idle speed change.

chaman

iTrader: (5)

I think you fucked up the MAF.....