SleekCelica
Jul 12, 2010 - 9:19 AM
This car just seriously hates me. My idle bounces from about 1500 RPM's to 2100 RPM's and then back again, over again, pretty rapidly. Also, there is a LOUD sucking sound from the intake manifold, and if you plug up the IAC hole, the sucking sound goes away and it calms down a bit. This car can be in gear, and actually just pull itself without me giving it gas, and i can shift all the way to forth without giving it gas.
hurley97
Jul 12, 2010 - 9:49 AM
check for vac leaks
Chhaos
Jul 12, 2010 - 10:19 AM
The idle bouncing sounds like what my CRX used to do. Turned out it was only a blown head gasket. The being able to shift into fourth with no gas whatsoever seems strange though.
rave2n
Jul 12, 2010 - 10:38 AM
Certainly sounds like a vacumn leak...
Where are you located in SC? - If your close to Greenville, I might be able to visit and take a gander.
SleekCelica
Jul 12, 2010 - 11:01 AM
i'm in columbia, so it's a possibility. I think my IAC has something to do with it though. Or maybe it's just trying to compensate for the vacuum leak.
Gtguy22
Jul 12, 2010 - 11:47 AM
Most likely a vaccume leak. Spray carb cleaner around the intake manifold to find the leak, the engine will idle down once hit with the cleaner. Have you messed with the vac hoses? If so could be a crossed vac line. Also could be a blown head gasket, bad intake manifold gasket, bad throttle body gasket, bad Idle air control valve, map sensor maybe?
SleekCelica
Jul 12, 2010 - 11:52 AM
My thoughts on that. I have no gasket between the throttle body and intake manifold. Map sensor is okay, because when I unplugged it, there was a definite notice in the running of the car. And by that, I mean, it didn't run at all. If the head gasket was blown, there would probably be coolant in the oil, and there is none. And I don't like spraying anything flammable towards my engine when it's running, because the last time I did that, well, let's just say I don't have any more stickers in the engine bay, and that a lot of my vacuum lines melted a little.
SleekCelica
Jul 12, 2010 - 12:04 PM
I just checked, and my IAC does indeed click when I have the key on and insert the connector to it.
hurley97
Jul 12, 2010 - 12:31 PM
When you cover the IAC hole with the car running and the throttle plate closed it should stall out. If it stays running its getting air into the intake manifold from somewhere else... i.e. vac leak.
SleekCelica
Jul 12, 2010 - 1:02 PM
That makes sense *hits self on forehead*
thanks!
Gtguy22
Jul 12, 2010 - 1:50 PM
Also Im almost positive there should be a gasket between the throttle body and intake manifold. I hear you on the whole spraying flammable things into a running engine..... ive done it too, but aside from hearing it, checking them all individually, or running a smoke test, thats one of the easier ways to do it. You can also take needle nose pliers and pinch hoses until you hear a difference.
rave2n
Jul 12, 2010 - 2:52 PM
QUOTE (Gtguy22 @ Jul 12, 2010 - 1:50 PM)
Also Im almost positive there should be a gasket between the throttle body and intake manifold.
Metal gasket last time I did mine.
SleekCelica
Jul 12, 2010 - 3:50 PM
So rave2n, do you wanna meet sometime? I was trying to set up a meet, but obviously that won't work until I get this thing fixed
JuMPiiN
Jul 12, 2010 - 5:21 PM
Its a vacume leak man, Mine did that it took me about 30minutes to find the one that was doing it, found it and it idles perfect at 1100 from then on. Trace all your vacume lines.
rave2n
Jul 12, 2010 - 7:56 PM
QUOTE (SleekCelica @ Jul 12, 2010 - 4:50 PM)
So rave2n, do you wanna meet sometime? I was trying to set up a meet, but obviously that won't work until I get this thing fixed
Sure, just got the front all fixed up, and a few other goodies in the mail. Should be ready in 2 weeks, saw 2 black cellies today on the way home...if i spot them agian, i'm going to attempt to recruit 6gc members =P
SleekCelica
Jul 12, 2010 - 8:16 PM
QUOTE (rave2n @ Jul 12, 2010 - 8:56 PM)
QUOTE (SleekCelica @ Jul 12, 2010 - 4:50 PM)
So rave2n, do you wanna meet sometime? I was trying to set up a meet, but obviously that won't work until I get this thing fixed
Sure, just got the front all fixed up, and a few other goodies in the mail. Should be ready in 2 weeks, saw 2 black cellies today on the way home...if i spot them agian, i'm going to attempt to recruit 6gc members =P
Cool, we'll keep in touch, in the meantime, I go into hardcore vacuum leak checker mode!
Stambo
Jul 12, 2010 - 10:02 PM
Got the same problem on my 2nd gen 3s though. But, def no vacuum leak. Hoping just a cleaning on the iac will help the idle.
If i'm not mistaken the gt uses the same iac as the 2nd gen 3s?
SleekCelica
Jul 13, 2010 - 8:45 AM
But my IAC works
SleekCelica
Jul 18, 2010 - 1:35 PM
Alright I'm stupid. When I took the iac out to clean it, some parts fell out that I put back together. I put it back wrong! I put the valve upside down. Took it back out, put it right, and problem solved!!!!!!!
SleekCelica
Jul 18, 2010 - 1:38 PM
Because it was upside down, it was pulling in the full potential of air, as if the valve was all the way open, that's why it would pull through the gears.
rave2n
Jul 18, 2010 - 6:22 PM
lol, well gratz on figuring it out before you tore the whole car apart!
SleekCelica
Jul 18, 2010 - 7:52 PM
Yeah seriously, I feel stupid though! Still stalls, but that's the distributor, and it should be on my doorstep tomorrow
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please
click here.