It is currently Fri Mar 29, 2024 7:35 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: CODE P0128 What it means and how to fix it
PostPosted: Mon Mar 12, 2018 12:37 am 
Offline
LOST Member

Joined: Wed Jun 04, 2008 5:41 pm
Posts: 160
Location: NorCal
P0128 CODE came up on my diagnostics. It means something is wrong with the Cooling System but I replaced the Thermostat less than two years ago when I flushed the coolant and replaced the hoses. Low miles since then so have any of you had trouble with Thermostats breaking? I read sometimes this code can mean one or two sensors are bad. If so, where can I locate those sensors on the engine? Ideas about what else it could be?
I put on a new water pump, good quality, three years ago.

_________________
2005 Sport, Light Khaki, manual trans 6 speed, front spacer lift, tinted glass, tow hooks, ProComp black rock crawler rims, Toyo AT tires, K+ N filter charger, Magnaflow muffler, Bilstein shocks, Daystar sway bar bushings, skid plates, trailer hitch, fogs, 50 watt back up bulbs, Sylvania plus headlights, Thule rack and SiriusX Satellite radio.


Top
 Profile  
 
 Post subject: Re: CODE P0128 What it means and how to fix it
PostPosted: Mon Mar 12, 2018 6:09 am 
Offline
Lifetime Member
Lifetime Member

Joined: Sat Apr 01, 2006 9:38 pm
Posts: 12988
Location: Colorado Springs
P0128 means that the engine is not reaching operating temp quickly enough and 99.999% of the time it's the result of a bad t-stat.


Top
 Profile  
 
 Post subject: Re: CODE P0128 What it means and how to fix it
PostPosted: Mon Mar 12, 2018 6:18 pm 
Offline
LOST Member

Joined: Wed Jun 04, 2008 5:41 pm
Posts: 160
Location: NorCal
OK, tk, I will drain it out and buy a new one first to see if that shuts off the Engine Trouble Light.

_________________
2005 Sport, Light Khaki, manual trans 6 speed, front spacer lift, tinted glass, tow hooks, ProComp black rock crawler rims, Toyo AT tires, K+ N filter charger, Magnaflow muffler, Bilstein shocks, Daystar sway bar bushings, skid plates, trailer hitch, fogs, 50 watt back up bulbs, Sylvania plus headlights, Thule rack and SiriusX Satellite radio.


Top
 Profile  
 
 Post subject: Re: CODE P0128 What it means and how to fix it
PostPosted: Mon Mar 12, 2018 11:04 pm 
Offline
Lifetime Member
Lifetime Member

Joined: Sat Apr 01, 2006 9:38 pm
Posts: 12988
Location: Colorado Springs
Liberty for All wrote:
OK, tk, I will drain it out and buy a new one first to see if that shuts off the Engine Trouble Light.

Manually clear the light,otherwise can take up to 50 "no fault" drive cycles to self clear.

Don't use any type of "fail safe" t-stat,they always fail.Had a few in the failed position right out of the box.

OEM is the only one that is worth it.


Top
 Profile  
 
 Post subject: Re: CODE P0128 What it means and how to fix it
PostPosted: Tue Mar 13, 2018 12:26 am 
Offline
LOST Member

Joined: Wed Jun 04, 2008 5:41 pm
Posts: 160
Location: NorCal
I will avoid the brand you mentioned.
Is there any shortcut to replacing the thermostat without draining out all my new coolant?
Thank You

Dave

_________________
2005 Sport, Light Khaki, manual trans 6 speed, front spacer lift, tinted glass, tow hooks, ProComp black rock crawler rims, Toyo AT tires, K+ N filter charger, Magnaflow muffler, Bilstein shocks, Daystar sway bar bushings, skid plates, trailer hitch, fogs, 50 watt back up bulbs, Sylvania plus headlights, Thule rack and SiriusX Satellite radio.


Top
 Profile  
 
 Post subject: Re: CODE P0128 What it means and how to fix it
PostPosted: Tue Mar 13, 2018 12:27 am 
Offline
LOST Addict
User avatar

Joined: Sat Aug 27, 2016 9:12 pm
Posts: 2505
Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
Drain it into a clean pan and re-use it when done.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 19 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!
Logo by pixeldecals.com