seafoam now car is high idle

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Originally Posted By: antiqueshell
@MetalSlug:

I did a little searching and supposedly you can pull the codes from your car...try turning the key to accessories turning off and then turning it to accessories again, it may give you a series of flashes from the CEL. Report back.

The point is the code will tell you where to start looking as opposed to just randomly trying stuff.


O.o i will give it a try
 
did some search, look like i need more then just turn key on and off
frown.gif
 
You need to find the jumper plug located in the engine compartment on the drivers side, it is a small plastic female square connector that is not plugged into anything else, just hanging unused. You ground this connection to the battery or any negative part of the engine block, and then you turn the key to accessories then off then on to acc again and it will flash out the codes.
 
Originally Posted By: OVERK1LL
Looks like the main feed to the vacuum tree.


that thing i circle that have 3 hose connect to it, i yank the [censored] out off it to get the other hose off :(, i dont know if i do any damage or broke it., and the small hose in the middle, what its for ? and rememeber this car take off all emmison or smog pump off.
 
Originally Posted By: MetalSlug
Originally Posted By: OVERK1LL
Looks like the main feed to the vacuum tree.


that thing i circle that have 3 hose connect to it, i yank the [censored] out off it to get the other hose off :(, i dont know if i do any damage or broke it., and the small hose in the middle, what its for ? and rememeber this car take off all emmison or smog pump off.


That thing is the vacuum tree.

You have one large vacuum line coming from the engine to it as a feed source (the one you said you pulled) and then one going out to the booster and the third appears to scoot off into the fender, likely for cruise control if the car is so equipped.

If you want to see if you broke it, unhook the feed line from it again and plug it with a bolt. If the car idles fine, you've found your vacuum leak.
 
Originally Posted By: MetalSlug
btw, is between intake and TB need a gasket ? cause other day when i take off, i dont see any gasket between them.


Yes there is a gasket between both the Throttle Body and EGR Spacer and the EGR spacer and the Upper Intake.

F1SZ-9F627-A gasket between t-body and spacer

E7ZZ-9E464-A gasket between spacer and upper plenum
 
Originally Posted By: MetalSlug
i yank on that vacuum tree really hard, i dont know if i damage of crack it.


Well, as I said, it is easy to test using the process I indicated in the post you replied to.
 
Originally Posted By: MetalSlug
the car is automatic, yesterday when i clean the IAC with carb cleaner,

Carb cleaner is powerful stuff, I wouldn't use it to clean a throttle body, nor spray it, or any other strong solvent, directly on the IAC valve.
 
Originally Posted By: demarpaint
I bet the vacuum tree is cracked or broken.


im plan take it out and check for crack . if it does crack, i hope part store carry it . because other day when i came to dealer ask for a vacum hose, they coulnt pull up the tree or the vacuum hose
 
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update : checking the Tree, and look like it no crack or broken. turn on the car, it still high idle and loud noise like a leef blower on intake air filter ( MAF sensor ) area, i unplug the MAF and car is die, then i crank again and car is idle beutiful.

when to part store and bought some MAF cleaner, and the torx tool thing, take off the MAF and the side MAF ( facing the air filter, im not a big fan of after market air filter that on fender at all. ) is so dark and burn, clean it off, put back in and car still high idle, but if i unhook the MAF car idle fine, and no noise like leef blower, i rev it up and rmp slowly back down again.

sound like I need a new MAF ?
 
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@MetalSlug:

The fact that you pulled the MAF plug and now the car runs fine indicates that somewhere along the line a sensor that interacts with the MAF is affected, you NEED to pull the code from the ECU.

Like I said there is a female connector on the drivers side of the engine compartment closest to the firewall that you simply ground to the engine block then you can pull the DTCs.

You need to start at the beginning, get the codes.
 
Hate to do this, but I just call my old mechanic, and got appointment for tomorrow, imma drop the car off tomorrow, and let him look at it, and properly pull the code.

this will be last time im using seafoam, another thing to learn, " if it aint broke, dont F touch".

but some how, i been reading and reading, and more more peoples say something about the TPS on these 5.0L , anyway my gf saw me stress over this mustang, she gonna made me watch a movie with her tonight, and help me keep my mind off the mustang for a bit. good night, imma post new update tomorrow.
 
@MetalSlug:

Good going, there is no point chasing after your tail if you can't get an idea of where to start looking.

As for putting things into your car like seafoam...DO NOT DO IT!

I've seen so many horror stories with this stuff, and yet, STILL people INSIST on taking the chance. Crazy.

--------------------------------------------------------------

The only thing you should put in your gas tank is GAS,
and maybe a PEA additive (which IS approved by the auto makers and often times added to pump gasoline)

The only thing that goes in the intake is AIR.

The only thing that goes in the crankcase is OIL.
 
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