Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
Sponsored by:
Sponsored by:

Would ECT or ACT affect idle while in park?

Thread Tools
 
Search this Thread
 
  #1  
Old 05-30-2010, 07:31 PM
BearFootCustom's Avatar
BearFootCustom
BearFootCustom is offline
Elder User
Thread Starter
Join Date: Feb 2009
Location: Up Up Upstate, NY
Posts: 786
Likes: 0
Received 0 Likes on 0 Posts
Would ECT or ACT affect idle while in park?

I tested and got those codes of them being out of self test range and was wondering if they affected idle in park because mine idles high and the throttle body is clean, no vacuum leaks and the tps is new, Thanks, Rich
 
  #2  
Old 05-30-2010, 07:57 PM
skucera's Avatar
skucera
skucera is offline
Mountain Pass
Join Date: Sep 2006
Location: Harrisburg, Oregon
Posts: 116
Received 2 Likes on 2 Posts
Yes, both can affect idle speed in Park or any other gear. The Engine Coolant Temperature sensor can get an error when coolant is low, so check your coolant level. Air Charge Temperature sensor is a primary input to the fuel richness map, so a bad ACT sensor can send your fuel injection computer into invalid areas of the map, and trip the Check Engine light.

Scott
 
  #3  
Old 05-30-2010, 08:09 PM
BearFootCustom's Avatar
BearFootCustom
BearFootCustom is offline
Elder User
Thread Starter
Join Date: Feb 2009
Location: Up Up Upstate, NY
Posts: 786
Likes: 0
Received 0 Likes on 0 Posts
Ya, my check engine light is on and my coolant is at the right level. After driving for awhile and put it in park, it idles high but when I put it in drive with my foot on the brake it idles right back down to normal. Thanks for the help
 
  #4  
Old 06-01-2010, 10:48 AM
EPNCSU2006's Avatar
EPNCSU2006
EPNCSU2006 is offline
Lead Driver
Join Date: Nov 2002
Location: Concord, NC
Posts: 9,531
Likes: 0
Received 26 Likes on 22 Posts
If you run the self test on a cold engine, those temperature sensors can show up as a fault, even though they are still working properly.
 
  #5  
Old 06-01-2010, 06:03 PM
BearFootCustom's Avatar
BearFootCustom
BearFootCustom is offline
Elder User
Thread Starter
Join Date: Feb 2009
Location: Up Up Upstate, NY
Posts: 786
Likes: 0
Received 0 Likes on 0 Posts
Oh nice haha I just bought a new act, but I still think it was bad
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
raven3
2009 - 2014 F150
11
02-12-2015 04:35 PM
Hometown Pride
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
05-07-2010 08:49 PM
lectricman
Fuel Injection, Carburetion & Fuel System
2
03-27-2008 05:52 PM
bkampbel
1987 - 1996 F150 & Larger F-Series Trucks
25
12-10-2005 12:07 PM
krewat
General Automotive Discussion
5
06-27-2005 09:23 PM



Quick Reply: Would ECT or ACT affect idle while in park?



All times are GMT -5. The time now is 10:01 PM.