Freaking IDLE

Tiller88 · February 26th, 2008, 07:23 PM

Ok guys was told it might be a Vaccum leak ok well today I tryed to find it and nothing I let her run and I sprayed Carb Cleaner on the gaskets and hoses trying to find the leak and well nothing...

I am completely lost please help guys about to take it to a shop afraid to know how much they'll charge though

jam77 · February 26th, 2008, 08:29 PM

Is it surging? Mine did that and it turned out to be timing.

Tiller88 · February 26th, 2008, 08:38 PM

I dont think so here are the symptons

Start her up idle at 3k non-stop the car pulls me down the road, it idles like that all day so I turn her off at stop lights cant handle the idle

But when I make a hard right (dont know about left) turn it will cut the idle a little but then goes right back...

and sometimes at random time it stalls like on its face

or sometimes it like hesitates when I'm just driving or get on it like a miss but just put new plugs in it, the wires are good...

Black Five 0h · February 26th, 2008, 08:45 PM

dont understand the turning deal, itd have to be a massive vac leak...check your timing like jam said

Black Five 0h · February 26th, 2008, 08:45 PM

also did you back your idle screw out?

Tiller88 · February 26th, 2008, 08:46 PM

Originally Posted by Black Five 0h

dont understand the turning deal, itd have to be a massive vac leak...check your timing like jam said

well I didnt find any air leaks dangit ok so how do I check my timing could someone walk me threw it? or should I just take it to the shop =(

Tiller88 · February 26th, 2008, 08:47 PM

Originally Posted by Black Five 0h

also did you back your idle screw out?

No its about mid-way why should I back it out?

Devine · February 26th, 2008, 08:59 PM

Originally Posted by Tiller88

No its about mid-way why should I back it out?

have you tried adjusting the idle screw at all to help with the fact that it idles at 3k?

Tiller88 · February 26th, 2008, 09:05 PM

Originally Posted by Devine

have you tried adjusting the idle screw at all to help with the fact that it idles at 3k?

well kind of I turned it right to tighten to lower the idle (is that correct) and it didnt do anything at all so I might want to try that (dang if thats it im going to smack myself in the head)

fogged306 · February 26th, 2008, 09:19 PM

have you checked your gas pedal and throttle cable.. you don't have anything resting on the pedal do you? maybe your throttle cable is stuck? just some easy things to rule out before you start looking elsewhere.

Tiller88 · February 26th, 2008, 09:22 PM

Originally Posted by fogged306

have you checked your gas pedal and throttle cable.. you don't have anything resting on the pedal do you? maybe your throttle cable is stuck? just some easy things to rule out before you start looking elsewhere.

No never thought about that I dont know exactly where it is but I'll crawl under her tomorrow and look I would figure it would be a obvious to see though

fogged306 · February 26th, 2008, 09:33 PM

You will be able to see your throttle cable from under the hood, no need to get under the car. Check the pedal right at the floor and push it with your hand, make sure it moves freely and springs back all the way. Then check your throttle cable right at the TB. Make sure your throttle blade closes all the way and there is no catches in its action.

Tiller88 · February 26th, 2008, 09:34 PM

Originally Posted by fogged306

You will be able to see your throttle cable from under the hood, no need to get under the car. Check the pedal right at the floor and push it with your hand, make sure it moves freely and springs back all the way. Then check your throttle cable right at the TB. Make sure your throttle blade closes all the way and there is no catches in its action.

O ok i feel dumb lol
Ok well I remember when I installed the TB it was shut all the way but I'll double check it and make sure

fogged306 · February 26th, 2008, 09:46 PM

did this idle problem start right after you installed the TB? I remember you were having problems with the gaskets, did you get that all sorted out?

tehdwarvenn · February 26th, 2008, 09:47 PM

clean your salt and peppers, clean IAB, those 2 are the first things you should do. try resetting base idle as well, its always better to eliminate than to guess at whats wrong firsthand.

tehdwarvenn · February 26th, 2008, 09:47 PM

BTW, 3k sounds like ur IAB is stuck open.

Tiller88 · February 26th, 2008, 09:53 PM

Originally Posted by fogged306

did this idle problem start right after you installed the TB? I remember you were having problems with the gaskets, did you get that all sorted out?

it started before and yes I got that situated lol thankfully

the IAB = ?

tehdwarvenn · February 26th, 2008, 10:03 PM

Idle air bypass. its the thing thats bolted to the side of ur TB =) unbolt it, unplug it, and soak that thing in carb spray. brown liquids will come out. specially if u have a K&N filter .

Tiller88 · February 26th, 2008, 10:04 PM

Originally Posted by tehdwarvenn

Idle air bypass. its the thing thats bolted to the side of ur TB =) unbolt it, unplug it, and soak that thing in carb spray. brown liquids will come out. specially if u have a K&N filter .

o i thought that was the AIC air idle controll and i just did that tonight maybe it'll solve the prob be nice

P.S. whats the thing ontop of the TB the black thing that goes over a small straight thing?

tehdwarvenn · February 26th, 2008, 10:24 PM

thats ur TPS = throttle positioning sensor. BTW the IAB can be called anything with the combination of the words

Air .
Idle.
Control.
Bypass.

=) IAB, IAC, AIC, AIB any of those work. does the same thing. little solenoid that lets air in your intake. lol.

February 26th, 2008, 08:29 PM	#2
jam77 Enthusiast 1987 Mustang GT Join Date: Apr 2007 Location: IL Posts: 685	Is it surging? Mine did that and it turned out to be timing. __________________ 87 GT, typhoon upper and lower,70mm tb, 90mm maf, bbk shorties, bbk x-pipe, flowmaster cat back, 3:73 gear, pro 5.0 shifter, novi blower,afm power pipe, load IO, Trick Flow heads, Anderson B-31 cam, Anderson PMS, 42 lb injectors, t-rex fuel pump.

February 26th, 2008, 09:47 PM	#15
tehdwarvenn Regular Join Date: May 2007 Location: Columbia SC Posts: 286	clean your salt and peppers, clean IAB, those 2 are the first things you should do. try resetting base idle as well, its always better to eliminate than to guess at whats wrong firsthand. __________________ 1993 Mustang GT, catless h-pipe, bbk shorties, 40 series flows, bbk rear suspension, edelbrock front suspension, AUTOLITES!!! =), k&n, underdrives, 3.73's

February 26th, 2008, 09:47 PM	#16
tehdwarvenn Regular Join Date: May 2007 Location: Columbia SC Posts: 286	BTW, 3k sounds like ur IAB is stuck open. __________________ 1993 Mustang GT, catless h-pipe, bbk shorties, 40 series flows, bbk rear suspension, edelbrock front suspension, AUTOLITES!!! =), k&n, underdrives, 3.73's

February 26th, 2008, 10:03 PM	#18
tehdwarvenn Regular Join Date: May 2007 Location: Columbia SC Posts: 286	Idle air bypass. its the thing thats bolted to the side of ur TB =) unbolt it, unplug it, and soak that thing in carb spray. brown liquids will come out. specially if u have a K&N filter . __________________ 1993 Mustang GT, catless h-pipe, bbk shorties, 40 series flows, bbk rear suspension, edelbrock front suspension, AUTOLITES!!! =), k&n, underdrives, 3.73's

February 26th, 2008, 10:24 PM	#20
tehdwarvenn Regular Join Date: May 2007 Location: Columbia SC Posts: 286	thats ur TPS = throttle positioning sensor. BTW the IAB can be called anything with the combination of the words Air . Idle. Control. Bypass. =) IAB, IAC, AIC, AIB any of those work. does the same thing. little solenoid that lets air in your intake. lol. __________________ 1993 Mustang GT, catless h-pipe, bbk shorties, 40 series flows, bbk rear suspension, edelbrock front suspension, AUTOLITES!!! =), k&n, underdrives, 3.73's

February 26th, 2008, 09:19 PM	#10
fogged306 Enthusiast 89 GT Join Date: Apr 2007 Location: Did you get that thing I sent you? Posts: 972	have you checked your gas pedal and throttle cable.. you don't have anything resting on the pedal do you? maybe your throttle cable is stuck? just some easy things to rule out before you start looking elsewhere.

February 26th, 2008, 09:33 PM	#12
fogged306 Enthusiast 89 GT Join Date: Apr 2007 Location: Did you get that thing I sent you? Posts: 972	You will be able to see your throttle cable from under the hood, no need to get under the car. Check the pedal right at the floor and push it with your hand, make sure it moves freely and springs back all the way. Then check your throttle cable right at the TB. Make sure your throttle blade closes all the way and there is no catches in its action.

February 26th, 2008, 09:46 PM	#14
fogged306 Enthusiast 89 GT Join Date: Apr 2007 Location: Did you get that thing I sent you? Posts: 972	did this idle problem start right after you installed the TB? I remember you were having problems with the gaskets, did you get that all sorted out?

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