overheating?!?!? - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-29-2010, 09:31 PM
Member
 

Join Date: May 2010
Location: gatesville,tx
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
overheating?!?!?

im having a werid issue with the truck...it only happens once in a while.while on the hwy cruising,no load,the temp gauge suddenly pegs hot.dash says reducing power.i look for a off ramp to stop,then the gauge goes back to normal and all is well.i pull off and open the hood,and truck seems to be fine.no excessive heat,fan is moving the air,overflow jug is at correct level ect.truck has had the new radiator,new overflow jug and all recals perfromed.it's a 08 job 1 truck with 145k on it.

what do you guys think i should be checking?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 08-30-2010, 05:48 AM
Powerstroke.org Sponsor

 

Join Date: Jan 2009
Location: Hillsborough, NC
Posts: 1,011
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
If it's not puking, you may just have a bad temp sensor.
Reply With Quote Quick reply to this message
  #3  
Old 08-30-2010, 10:54 AM
Premium Member
 

Join Date: Jan 2010
Location: South Texas
Posts: 1,117
Thanks: 1
Thanked 10 Times in 9 Posts
Feedback Score: 0 reviews
+1 on the bad sensor
Reply With Quote Quick reply to this message
  #4  
Old 08-30-2010, 06:37 PM
Powerstroke Techie

 

Join Date: Oct 2009
Posts: 1,680
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 0 reviews
Overheats that peg the temperature gauge SHOULD set codes...

They don't always though.

Could be a small air pocket, bad sensor (the only problem is there are a BUNCH of sensors that can flip the gauge up.)

Do you hear the fan ramp up as it's overheating? Er... as the temperature gauge climbs?
Reply With Quote Quick reply to this message
  #5  
Old 08-31-2010, 07:33 AM
Member
 

Join Date: May 2010
Location: gatesville,tx
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Big Angry Hillbilly View Post
Overheats that peg the temperature gauge SHOULD set codes...

They don't always though.

Could be a small air pocket, bad sensor (the only problem is there are a BUNCH of sensors that can flip the gauge up.)

Do you hear the fan ramp up as it's overheating? Er... as the temperature gauge climbs?
nope fan running as normal....engine doesn t even feel hot.i thought the same thing on the air pocket,so when it did it again,i loosend the coolant cap and bled off the pressure.coolant did rise in the jug,just above the vent tube.it hasnt done it again tho....but i have noticed even after sitting for 3 hrs,if i turn on the key,the engine temp gauge is still in the middle.just like if it is warmed up,but the trans temp is cool.
Reply With Quote Quick reply to this message
  #6  
Old 09-01-2010, 08:28 PM
Powerstroke.org Rookie
 

Join Date: Oct 2009
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have a 2008 F450 with the same problem. Ran the truck with a recorder from the dealer. Truck is now in service bay with a bad oil cooler and coolant in the oil. Don't wait on this. Same symptoms as you are describing.
Reply With Quote Quick reply to this message
  #7  
Old 09-06-2010, 05:39 PM
Member
 

Join Date: May 2010
Location: gatesville,tx
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Update...took another 6 hour trip.3 hours into the trip,cleanibg exhaust filter comes on.within 10 miles temp gauge suddenly pegs hot,and display says reduced power.i pull over immeadiatly,and put it in park.gauge starts dropping,within a minute or two its back to normal,and i drive on.im starting to think the dpf is clogged.
Reply With Quote Quick reply to this message
  #8  
Old 09-12-2010, 07:56 AM
Powerstroke Techie

 

Join Date: Oct 2009
Posts: 1,680
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 0 reviews
Could be a bad EGT sensor. Have seen a few of them read somewhat high, and that's enough to put it into "Failure Effect Management Mode" because the sensor is telling the PCM something has got way too hot, when, in actuality the sensor is reading a couple hundred degrees too hot, but there's no way for the PCM to know that.
Reply With Quote Quick reply to this message
  #9  
Old 09-12-2010, 08:28 AM
Powerstroke.org Rookie
 

Join Date: Oct 2009
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
unless the wrench light and check engine light come on it is not a clogged dpf. Have been through that also. You need to check your engine oil temp. It is not supposed to be more than 5 degrees above your coolant temp. Mine was 50 degrees above hence all the symptoms you are describing to a tee. Just my 2 cents. 2008 ford f450 with 252,000 miles
Reply With Quote Quick reply to this message
  #10  
Old 09-12-2010, 10:05 AM
<<< 6.4 Powersmoke
 

Join Date: Oct 2007
Location: Pocat-hell-hole, Idaho
Posts: 1,509
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by outlawtransport View Post
unless the wrench light and check engine light come on it is not a clogged dpf. Have been through that also. You need to check your engine oil temp. It is not supposed to be more than 5 degrees above your coolant temp. Mine was 50 degrees above hence all the symptoms you are describing to a tee. Just my 2 cents. 2008 ford f450 with 252,000 miles
Wow, what problems have you had in all those miles?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 07:22 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors