Ive read forums and forums and cant find out my high idle problem. ive done a boost leak test and fixed the small leaks and still have high idle. adjusted my tps and would fix the idle for a bit then idle would just back up to 2000 and stays their. and my air fuel gauge reads lean. so any one else has had this issue and also my car drinks gas worser than my old foxbody so I cant evem get 10mpg. any one have any opinions? thanx for the help

whats ## vacuum at idle? did u test your isc? youtube it

Check throttle plate position. Re verify you don't have any boost leaks using soapy water and check exhaust leaks pre front o2.

yup used soapy water fixed my leaks the first time. my vacumm when it idles at 1100 on cold start its at 12ish and at 2000 it jumps to 17. cant really find any exhaust leaks. as for the isc havent checked will look at youtube videos as we speak.

Bad gas mileage possible bad o2 sensor.
Hows throttle linkage.
Any cels.
Also your profile up to date? You got stock everthing?

no cel yet been driving it for it. yup still stock everything no mods other than boost gauge and afr gauge and a bov. throttle linkages to me seem fine not tight or loose.

All stock your idle vacuum should be around 18 inhg

Have you adjusted the biss screw? Its probably not set correctly.
Still could be bad o2 sensor, and check for exhaust leaks.
What was changed before it started doing this?

when I baught the car a intercooler piping piece was broke fixed that and the stock bov was cracked somehow replaced the bov still recirculating. car drinks gas like crazy reads out lean mixture and ive tryed adjusting the tps when I bring the idle down to atleast 1000 would idle fine for a bit after a while it will slowly go back up to 2000 rpm again. and vacumn is at 18 as idle gets higher. but on cold start it will be at 14 then go up as the idle raises.

Check o2, maf, exhausg leak.

Do you smell fuel anywhere? Check engine compartment and tail pipe.
Where is the wideband installed?

my air fuel is connected to the blue wire on the o2. and at points smells like gas from the exhaust as if its running rich.

I dont follow. Post pictures.
Is ir in the front or rear spot?

no as in out the exhaust muffler in the back theirs no exhaust leaks that I can point or see with ot without the car running.

Run seafoam through your bov line you will see it come out where there are leaks. Post baxk when yiu check all that out.

the o2 housing was only being held by 1 bolt fixed that
tested my isc and works fine
adjusted my throttle body and now I got it to idle at 1000 but it still smells like gas coming from the muffler and im still getting a lean read out ?