75 mm throttle.

[Kuestone]

I am one of the unlucky few who just installed a 75mm throttle body and plenum from accufab and my idle is off. My idle is at about 1200 and i rev and it hangs at 2000 for a sec and drops back down to 1200. How do i adjust my idle speed to get it back below 1000 rpm. 2002 mustang gt. only have catback exhaust, x pipe. P.x whoever wrote the thread on install big thanks.

 

[Stangdriver1119]

I had a 75mm TB/PLenum installed 2 weeks ago and I was getting a similar problem (mine goes from 600rpm at idle to 1100rpms and hangs for a bit). Actually I still am having the issue...it's kinda on and off. My installer said to give the computer time to adjust, something like at least 500 miles. Also check your intake hose connections, the TPS sensor, and maybe its possible your MAF sensor got a little dirty when you had the hoses disconnected.

 

[StangSpeed]

More than likely its your TPS...thats what happened to me after I installed my BBK 75mm...fixed the problem...

 

[helty]

like they said above, give the computer time to relearn, maybe a week or two. if it doesnt go away, then check out your TPS or IAC.

 

[Kuestone]

I dorve car around a bit warmed up engine, the rpm hangs at 2000 for about 1 second and then drops to 1000 and stays there is 1000 norm i thought car should idle around 700rpm.

 

[helty]

i just did mine as well. when I first turn it on in the morning, it idles around 1000. after a minute or two, it drops to maybe 950. then after warming up it gets back to normal, around 700 for the rest of the day. I dont know, I got lucky I guess.

did you use a voltmeter to check the TPS voltage @ idle? should be .98-1.0, just a thought.

 

[Kuestone]

negative I dont even wtf that is ha.

 

[Kuestone]

dont even KNOW wtf that is.

 

[Dorsai]

or the "edit" function either...

 

[jrc_03_gt]

make sure you use the gasket that came with the plenum for the EGR. Its thicher than the stock one and seals up much better.