High idle

[Jrcmutang]

Ok people.... at wits end.... have a 95 cobra, with a BG kit. System max intake, trickflow stage one cam, just resealed the intake and set initial timing at 10 degrees with the spout out. Now the car seems to idle around 1100-1200 rpm and wont settle down, tried adjusting the idle screw and nothing happens, also tapped on the IAC and still no results? Could I have a vacuum leak? I thought that it would makes the car idle like crap or hunt for idle when having one?? This idle stays steady at 1100-1200 rpm.

[mustangjon]

Sounds like vacuum leak to me

[Rich]

What happens with the spout plugged in? I assume it did not have the high idle before? What happens when you unplug the IAC while the car is running?

[Jrcmutang]

Havent tried to unplug the IAC, might try that tonight?? The idle is really low with the spout out. As soon as you plug it in, the idle picks up and wont settle. It doesnt hunt for idle, just steady.

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it idled great before, im prob just going to go ahead and replace all the little vac lines for good measure

[Rich]

How much vacuum is it pulling?

[Jrcmutang]

i want to say 10-15, according to boost guage

[Jrcmutang]

Maybe spay come carb cleaner around the hoses where they connect to the back of the intake??

[NXcoupe]

It idles fine till u plug the spout in?

[Jrcmutang]

It idles like really low, lol like you have 10 degrees in it, vut as soon as spout goes in, idle picks up and stays steady

[bbfstanger]

usually when the iac's go bad and stick open the idle will 1500rpm or better.
being the idle comes back down with the spout out should rule out the iac.
what does the timing go to with the spout in?
whats your tps set at?

[Jrcmutang]

Dont really know what timing is with the spout in, but can check. Also what would be a sign of a bad tps? Where is it located on the SN cars, i know on a fox but not a SN

[k062693w]

Wait ... Aren't you friends with a couple "Mechanics" ???

Never mind ... I wouldn't Trust either one to do it Right ...

[Jrcmutang]

Come on man, let that horse die buddy, just trying to get some issues solved

[k062693w]

Come on man, let that horse die buddy, just trying to get some issues solved

LOL ... Nope !!!


Good Luck on your car ... At least MOST people on here will give you the information so it can be done Right ...

[bbfstanger]

its on the t/body

[Jrcmutang]

would it be on the side of the throttle linkage

[SN95N/A]

I have no idea if there different,I'm sure they are but I got a new tps sensor u can try

[Jrcmutang]

sweet, ill let you know

[Rich]

Ryan,

Here is a good link to follow.

http://sbftech.com/index.php/topic,1031

[Rick93coupe]

I might be able to swing by tomorrow evening, being so close. That link Rich posted is a perfect rundown on what to try.

[bbfstanger]

yes its always on the opposite side of the throttle linkage.
sbftech that place is a fn cult lol!

[Jrcmutang]

Found a worn vac hoise with a slight hole last night, going to get a new piece today and try

[Jrcmutang]

Tried new line with no success. Going to try another timing light, but I did unplug IAC and car died, is that normal?? Also took off IAC, wasnt carboned up???