high idle and only boost to 7 psi

[brad1967]

ok i have not hooked scan tool up yet but here goes the idle is at 3000 rpm's and the car only boosts 7 psi. Had a similar issue before turned out to be switch on side of throttle body.
But i checked it with a multimeter and it is working correctly, closed throttle it shows closed circuit.
That is all i have checked.I am Pretty shure everything is tight, but will scan car some time tomorrow.
But wondering if both issues could be related?
Like some sort of mode the ecu goes into?
This is first dsm i have messed with so do not beat me up too bad i have searched forums got ideas but nothing similar?
I plan to check tps and isc tomorrow along with leaks at the egr tube!, and smoke test the intake system.
If that is leaking time for a hard pipe upgrade, as this car has lotta miles on a really fresh motor! thanks in advance for any help????

 

[ddavisaf]

A smoke test does not work. The only way to truely test your intake system is with this link...
http://www.vfaq.com/mods/ICtester.html
Check your ISC (sensor on the bottom backside of the TB)
And run your boost leak test.

 

[Dream On]

I would agree with ddavisaf. (I just tried to give you rep points, but you were the last person that I had given them to. I would check for leaks, it may be your biss screw o-ring. That could mess with the idle and be a boost leak at the same time.

 

[brad1967]

thanks guys will keep yall posted on my progress no tim today to mess with it but sat aqnd sunday is looking good i hope it is the isc anyway i headed to bed and thanks agian my memail at lns is not working but you can reach me at [email protected]

 

[brad1967]

ok today i found a leaking pcv vac line alot better but i am going to hok scan tool to it tomorrow tapped on yps when cold this seemed to effect it so will go over whole idle system then move on to other area's keep you guys posted as i go along and thanks agian. also boost is up to 10 psi