2002 Deville High Idle Rec code - Cadillac Forum - Enthusiast forums for Cadillac Owners

Cadillac Deville The flagship luxury car, offering the class with which the Cadillac has been associated, for decades

2002 Deville High Idle Rec code

Reply

 
 
 
  #1  
Old 03-13-2018, 11:17 PM
Junior Member
Thread Starter
Join Date: Mar 2018
Location: Indiana
Posts: 2
Default 2002 Deville High Idle Rec code

Hows it going? Im new to the whole forum thing, along with diagnosing and fixing vehicles. I got a 2002 Deville roughly 5 months ago. It has the 4.6 and only had 94,000 miles. Car fax says it had only one owner and it was registered under a business. Not to mention it showed it being serviced frequently.
Car ran great all winter no issues at all. It is now up to 105,000. It started to rev high while in park and while driving. In park it was around 800 rpm and while driving it would be around 1,200 rpm sitting at a red light. I got lucky and the engine light came on one weekend I was able to get to autozone. It had been only coming on in the mornings going to work. The said it was reading a high idle and said the issue was the IAC valve. Part was 220$. I ended up getting throttle body cleaner, cleaned the valve and nothing changed. I heard a vacuum leak and located it with the TB cleaner. The boot connecting the air intake had a leak. I managed to change it out with the help of YouTube and several calls to dad. Car worked great for about 3 weeks. Started doing the same idling issues and I figured out how to get the codes off the dash. It reads ITC U1016 history and PCM P0507 current. I cleared it after all the work I had done. I believe the pcm is the high rev code. Any thoughts? I appreciate your time!
 
Reply With Quote
  #2  
Old 03-13-2018, 11:18 PM
Junior Member
Thread Starter
Join Date: Mar 2018
Location: Indiana
Posts: 2
Default Another thing

i only get 16.7 mpg on the highway recently also
 
Reply With Quote
  #3  
Old 03-24-2018, 12:17 PM
Junior Member
Join Date: Dec 2011
Posts: 12
Default

The IAC was the culprit on my 03 DTS. $220 is waaaaaay too high for that valve. Look up the following part numbers on eBay or Amazon:

17076310, 17113388, 88893284, CV10012

I found one for under $10 brand new shipped, and it works great.

Be prepared for possibly stripping a screw, as the left screw is in an awkward spot. I bought a pair of stainless M4-.7 Allen head screws and washers to replace the factory screws.
 
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
boogcaddy
Cadillac Deville
9
12-03-2016 05:32 PM
teddykan
General Tech
3
02-03-2009 07:40 PM
tigerdan
Cadillac Seville
9
12-03-2008 03:26 PM
kobrien8
General Tech
3
11-06-2008 02:39 PM
daviddonovan4
General Tech
1
11-17-2007 03:23 AM


Thread Tools
Search this Thread
Quick Reply: 2002 Deville High Idle Rec code


Advertising
Featured Sponsors
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.