All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 

contributions: 1
What is OE thermostat temp suppose to be for a 2003 gmc envoy with the 4.2. Inline 6. I see on different site it says 187. And some say 190. I believe my thermostat is stuck open. I get a po128 code. I replace cts sensor and still comes up. 1 part store has a 187 degree thermostat. Another. Has 190 degree. What is OE suppose to be. Thanks


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

contributions: 2256
Images: 37
Location: Oregon
187 rounded off to the closest 10 degrees would be 190. three degrees... either one would meet the requirements for the PCM.

yes, most of the time the fix for P0128 is replace the thermostat.


   
Reply with quote  
 

contributions: 7
Sometimes, that code does not mean necessarily that the thermo is bad. Ensure the harness wire linking the sensor from the ECU is not open or shorted; check the coolant level, and the integrity of the coolant; and also if there is leakage in the cooling system.


   
Reply with quote  
 
User avatar

contributions: 2256
Images: 37
Location: Oregon
it is true that codes stored in the computer may not always be exactly what you would think it is. but that being said P0128 is set because the engine did not reach the temperature the computer is looking for within a designated time. (took too long to warm up) Using a scanner and a temp-gun, you can check to see if the temperature that the computer sees matches the temperature that the gun sees by the temp sensor. (tool most shops would have)

so, the most common answer to this code is the thermostat is stuck open. Book time is 1.1 hours labor to change the thermostat


   
Reply with quote  
 
Site Admin
User avatar

contributions: 173
Images: 17
carriedi wrote:
it is true that codes stored in the computer may not always be exactly what you would think it is. but that being said P0128 is set because the engine did not reach the temperature the computer is looking for within a designated time. (took too long to warm up) Using a scanner and a temp-gun, you can check to see if the temperature that the computer sees matches the temperature that the gun sees by the temp sensor. (tool most shops would have)

so, the most common answer to this code is the thermostat is stuck open. Book time is 1.1 hours labor to change the thermostat


I agree.


   
Reply with quote  
Ask A Question Reply   

   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first Gmc envoy

in GMC Trucks

Dwhid64

1

1589

Fri Apr 06, 2018 9:34 am

carriedi View the latest

New Articles View the first 2002 Gmc Envoy No Start

in GMC Trucks

Jamesh

3

2220

Tue Sep 26, 2017 11:01 am

carriedi View the latest

New Articles View the first 04 gmc envoy code c0055

in GMC Trucks

Anthonystull

1

4296

Tue Jan 26, 2016 11:31 am

carriedi View the latest

New Articles View the first 1999 GMC Envoy won't start

in GMC Trucks

bjhatfi

5

3137

Fri Mar 17, 2017 1:34 am

carriedi View the latest

New Articles View the first 06 envoy idle problem

in GMC Trucks

Beginnermechanic

1

1921

Wed Mar 23, 2016 10:17 am

carriedi View the latest

New Articles View the first 04 Envoy intermittant cruise control

in GMC Trucks

eagleeye60

3

668

Fri Jul 20, 2018 11:04 am

carriedi View the latest

New Articles View the first 2004 GMC Envoy P0410 Trouble Code

in GMC Trucks

glenrr

1

1646

Sat Mar 24, 2018 3:00 am

carriedi View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us