Thread: '99 Vortec 350, Code P1509 (High Idle)
View Single Post
  #8  
Old 03-25-2014, 09:36 AM
ASJT3 ASJT3 is offline
AF Regular
Thread starter 		 
Join Date: Jan 2005
Posts: 254
Thanks: 1
Thanked 7 Times in 7 Posts
Send a message via AIM to ASJT3
Re: '99 Vortec 350, Code P1509 (High Idle)
Quote:
Originally Posted by maxwedge View Post
Right about the vacuum readings that is how the pcm calculates it. Possible the iac itself is bad or carboned up.
As i said initially, I replaced the IAC to try and fix this problem, no change.
__________________
2008 Tahoe SSV, 2007 Tahoe SSV, 94 GMC K1500, 93 Chev K1500, 91 GMC K1500, 2000 Wrangler Sport
Reply With Quote