Quantcast




All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 

contributions: 2
My 2003 Chrysler Sebring is overheating.

A mechanic friend of mine is trying to teach me how to work on cars, and we redid the head gasket and ran into many issues, and this problem is our final barrier from having a brand new car essentially.

Fans aren't coming on because the ECM is reading the coolant temperature 60degrees off. Not sure what is causing the false reading.
Replaced thermostat (a previouse "mechanic" had put it in backwards), pushed air through the coolant lines, gets good heat, fans failsafe come on when AC is on, I can manually hardwire the fans on, but this is not ideal, I would like for the system to work automatically.

feeling helpless, no one seems to have encountered this problem.
:oops:


Share on FacebookShare on DiggShare on DeliciousShare on TechnoratiShare on TumblrShare on Google+
   
Reply with quote  
* Search   
 
User avatar

contributions: 1945
Images: 37
Location: Oregon
you need to check the accuracy of your coolant temp sensor. your low speed fan should come on at 220F and off at 210F, and your high speed fan should come on at 230F and turn off at 220F. (depending on the engine, there is a couple of degrees difference, but, generally) If you use an infrared temp gun at the thermostat housing and the computer and the temp gun are 60 degrees off you should at least check that the CTS is good or not. They are not very expensive. Replacing it would be cheaper than taking it to a shop and having them test it. And if it's not the CTS then if you take it to a shop you can tell them that it has already been replaced so they shouldn't need to look at that. They probably will anyways but you shouldn't pay for that if it's good. (every shop is different though)

other things that can cause the CTS to read wrong is resistance is a problem with the wiring or maybe a bad ground connection. You could read the resistance of the coolant sensor. at about 77F it should have a reading 9 to 11 K ohms. at 212F it should be 640 to 720 ohms. That's resistance across the two prongs of the sensor with the wire harness disconnected. If the sensor ohms out good you're going to have to check the resistance at the wire harness to the computer. Disconnect the computer connectors and see it the readings are still good coming through the harness. If it's still good you might need a computer.


   
Reply with quote  
 

contributions: 2
Thank you! I replaced the ECT sensor and that did the trick!


   
Reply with quote  
Ask A Question Reply   


   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first 2006 Chrysler Sebring FWD rear tires locked

in Dodge And Chrysler

thecolorred85

3

310

Tue Oct 25, 2016 10:31 am

carriedi View the latest

New Articles View the first 2003 Pontiac Grand AM V6 3.4 Overheating

in Pontiac Grand Am

ronrw2b2

1

476

Sun Jul 10, 2016 2:24 am

carriedi View the latest

New Articles View the first 2008 Sebring no start

in Dodge And Chrysler

jmchesnut

1

972

Tue Sep 22, 2015 10:30 pm

carriedi View the latest

New Articles View the first 2007 Sebring brake lights not working. High mount works, low

in Dodge And Chrysler

towtruckguy

1

1147

Wed May 14, 2014 10:25 am

carriedi View the latest

New Articles View the first Dodge intrepid overheating

in Dodge And Chrysler

Natasha0258

1

611

Thu Aug 11, 2016 2:11 pm

carriedi View the latest

New Articles View the first Chrysler Town and Country won't start

[ Go to page: 1, 2 ]

in Dodge And Chrysler

RANDALL25

10

1821

Mon Feb 15, 2016 9:37 pm

dw85745 View the latest

New Articles View the first Chrysler 300c has no fuel pedal

in Dodge And Chrysler

Scott21

5

1294

Wed Apr 08, 2015 7:10 am

dafaa45 View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us