Chrysler Voyager & Town & Country The first and foremost name in minivans leading the class since their inception in the 1980s

2003 T & C, No cold idle?

  #1  
Old 11-02-2012, 05:43 PM
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 15
Default 2003 T & C, No cold idle?

Hello people!

I'm new to the sight and new to chrysler. I have a 2003 t&c with the 3.8 engine and it has 150 K miles. I bought this in the summer so I never noticed that there is no fast idle or cold idle. Every auto I've owned idles faster when it's cold then drops to normal. This does not! At about 35 degrees it idles at 650 - 700 rpm's and stays there. After 15 minutes the temp gauge is still only half way to normal.

Would someone give me some Ideas of where to start and what to look for?

THANKS!!!!
 
  #2  
Old 11-10-2012, 11:09 AM
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 15
Default

any suggestions?????
 
  #3  
Old 11-10-2012, 03:13 PM
Senior Member
Join Date: Oct 2011
Location: California
Posts: 722
Default

The engine temp sensor (ECT) tells the Powertrain Control Module (PCM) the engine is cold. The PCM tells the engine to richen the mixture and commands the Idle Air Control Valve (IAC) to open creating a high idle rpm. Something is amiss in that string. Is the temp gauge working ok? Does the idle increase or at least maintain 700 rpm when you turn on the A/C? Might start with a good throttle body cleaning.
 

Last edited by Raptor 07; 11-10-2012 at 03:16 PM.
  #4  
Old 11-11-2012, 09:04 AM
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 15
Default

The temp guage is working. The AC does not work do to a leak at the condenser. I checked it this morning and at startup the engine briefly jumped to 1100 rpm's then quickly settled to 850 to 900. Current outside temperature is 55.

I cleaned the throttle body this summer after I bought it. It was pretty dirty! I see a black ring starting to form at the throttle plate again. Think it's worth cleaning again so soon? I did have to replace an IAC O-ring this summer.

Would the engine thermostat have anything to do with it? I think the engine takes to long to get to normal temp. Wondering if it's bad/going bad.

Thanks for the help!!!
 
  #5  
Old 12-08-2012, 05:20 AM
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 15
Default

Any other suggestions? I replaced the thermostat and hope to replace the IAC unit today.

Does your T&C have a faster idle at startup???
 
  #6  
Old 12-08-2012, 10:32 AM
CHRYSLER TECH's Avatar
Super Moderator
Join Date: Mar 2006
Location: Norcross GA
Posts: 8,115
Default

all cars do to a point
 
  #7  
Old 12-08-2012, 01:48 PM
goggs's Avatar
Senior Member
Join Date: Nov 2012
Location: Dumfries....
Posts: 1,752
Default Temperature Sensor...

Hi Guys,
Does this engine not have a Temperature sensor for the ECU and a Temperature sensor for the Gauge like other cars...
Gordy...
 
  #8  
Old 12-08-2012, 01:50 PM
goggs's Avatar
Senior Member
Join Date: Nov 2012
Location: Dumfries....
Posts: 1,752
Default Temperature Sensor...

Ditto...
 

Last edited by goggs; 12-08-2012 at 01:53 PM. Reason: Reply was timed out so made another...and...both came up...
  #9  
Old 12-08-2012, 03:21 PM
Senior Member
Join Date: Oct 2011
Location: California
Posts: 722
Default

Originally Posted by goggs View Post
Hi Guys,
Does this engine not have a Temperature sensor for the ECU and a Temperature sensor for the Gauge like other cars...
Gordy...

No. One sensor for both. The Engine Coolant Temperature (ECT) sensor.
 
  #10  
Old 12-09-2012, 07:04 AM
Junior Member
Thread Starter
Join Date: Nov 2012
Posts: 15
Default

So if my gauge works fine and the new thermostat did not change anything, I should be looking at the IAC. Anyone agree/disagree????

Thanks for the replies! They keep me from scratching my head to much.
 

Thread Tools
Search this Thread
Quick Reply: 2003 T & C, No cold idle?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.