Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-27-2014, 01:51 PM
tylerz71 tylerz71 is offline
Junior User
 
Join Date: Mar 2012
Posts: 74
tylerz71 is starting off with a positive reputation.
Takes forever to warm up?

My 92 I've noticed doesn't seem to ever hit operating temp. I live in mississippi so it's been 80+ degrees and the heat still doesn't blow warm until a good 20 minutes of driving. It's got the 4.9 5spd. Radiator looks to have been replaced, I flushed the heater hoses and core. New thermostat and rad cap. Temp guage seems to work and won't get into the word normal on the IP. This winter I'm gonna want my heat to work. How long do your trucks take to warm up with the oem 195deg tstat? What should I do next?
__________________
1981 Ford F100 custom 4.9 / C4
- 31x10.5x15 cooper at's

1992 Ford F150 4.9 / m5od
Reply With Quote
  #2  
Old 07-27-2014, 03:22 PM
Holmesuser01 Holmesuser01 is offline
Posting Guru
 
Join Date: Nov 2004
Location: Asheville, NC
Posts: 1,080
Holmesuser01 is starting off with a positive reputation.
On the six, I've seen the thermostat housing do what you are experiencing. They are made of pot metal, and when they are worn out, they will allow enough water to flow past the thermostat flange to literally keep the engine from getting good and hot.

When your motor is running at the required 195, your computer becomes very happy.
__________________
1994 F-150XL 4x4 w/300 six. Electronic Automatic with overdrive, A/C.
Reply With Quote
  #3  
Old 07-27-2014, 03:43 PM
timbersteel's Avatar
timbersteel timbersteel is online now
Posting Guru
 
Join Date: Mar 2005
Location: Mexico, Missouri
Posts: 2,237
timbersteel is gaining momentum as a positive member of FTE.timbersteel is gaining momentum as a positive member of FTE.
Another thought is whether you tested the t-stat before installing it. I only use Motorcraft and test any t-stat before installing.

Also, is the fan clutch in good shape? It could be failing and not slowing down so it's not allowing the engine to reach operating temp.

Holmes had a good point on the housing wearing out and not creating seal where it would allow coolant to pass and not heat up. Though I've never heard if that happening. Motorctaft t-stats have a small hole in them for air to escape when burping the system. Anything is plausible.
__________________
1992 F-150 I6 4.9L 300 110K 4x4, SuperCab, Manual
1992 F-150 V8 302 156K 4x4, SuperCab, Auto
"He's one brick shy of a load..."
"These ideas, evaluations, opinions are representations of real-life scenarios and backed by Murphy's Law..."
"Inferior parts lead to immediate failure sooner than later..."
Reply With Quote
  #4  
Old 07-27-2014, 03:55 PM
rla2005's Avatar
rla2005 rla2005 is offline
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 7,896
rla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to beholdrla2005 is a splendid one to behold
The factory temperature gauge is well known to be very inaccurate. So bad it should be considered "for reference only".

Use an infrared heat gun or install a mechanical gauge to verify the true temperature.
__________________
2013 Ford Taurus Limited 3.5L
2006 Ford Mustang GT 5-speed 3v 4.6L
rla2005@yahoo.com
Randy A | Central Illinois
Reply With Quote
  #5  
Old 07-27-2014, 04:14 PM
tylerz71 tylerz71 is offline
Junior User
 
Join Date: Mar 2012
Posts: 74
tylerz71 is starting off with a positive reputation.
I installed a gates thermostat, definitely no motorcraft although I got what I could on rock auto to bundle shipping. The fan clutch felt normal when I turned it but I didn't inspect it much yet. I was fearing water pump impeller maybe. Figured the temp guage wasn't too accurate but I think it is somewhat worthy because only when it has creeped up a little off C will the heat put out any warm at all. I didn't even think of the housing, good idea
__________________
1981 Ford F100 custom 4.9 / C4
- 31x10.5x15 cooper at's

1992 Ford F150 4.9 / m5od
Reply With Quote
  #6  
Old 07-27-2014, 05:12 PM
Holmesuser01 Holmesuser01 is offline
Posting Guru
 
Join Date: Nov 2004
Location: Asheville, NC
Posts: 1,080
Holmesuser01 is starting off with a positive reputation.
A bad water pump would slow the water flow and make it run hotter, I think.

Bad fan clutch would either just freewheel, and make it overheat at idle, or lock up and roar. I'd think then the thermostat would open and close and regulate as it should.

Somewhere in my basement, I still have the bad t-stat housing. The little spot where the thermostat sits is very worn looking. The replacement held the thermostat in place a little better.
__________________
1994 F-150XL 4x4 w/300 six. Electronic Automatic with overdrive, A/C.
Reply With Quote
  #7  
Old 07-27-2014, 05:26 PM
blkF250HD's Avatar
blkF250HD blkF250HD is offline
Posting Guru
 
Join Date: Apr 2011
Location: Hartland, WI
Posts: 1,119
blkF250HD is gaining momentum as a positive member of FTE.blkF250HD is gaining momentum as a positive member of FTE.
Could be a bad thermostat. I've seen several bad out of the box, two causing overheats and a few causing no heat.
__________________
'97 F250HD 4x4 351W E4OD
'91 Mazda 323 BG
'98 Harley-Davidson XL1200C 95th anniversary
'09 WRX premium
'04 Polaris 500 Classic
Reply With Quote
  #8  
Old 07-27-2014, 06:17 PM
tylerz71 tylerz71 is offline
Junior User
 
Join Date: Mar 2012
Posts: 74
tylerz71 is starting off with a positive reputation.
I wouldn't be surprised if its a bad tstat. I can try the one I ordered for my other ford. I just let the truck run for 20 mins straight with the infared thermometer reading an accurate 94 outside. The thermostat housing where the coolant temp sensor is only got up to 180 and the top hose had hardly any pressure on it. I'm leaning toward my $2 thermostat being bad.
__________________
1981 Ford F100 custom 4.9 / C4
- 31x10.5x15 cooper at's

1992 Ford F150 4.9 / m5od
Reply With Quote
Old 07-27-2014, 06:17 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Please help cool heat. Fordracer666 Expedition & Navigator 18 12-25-2013 08:18 AM
Installing block heater on V10 IslandBlueV10 Modular V10 (6.8l) 16 12-21-2013 03:11 PM
Seat electric heat lebanontn Super Duty & Heavy Duty 4 03-17-2013 10:42 PM
takes a loooong time to make heat?? marcs724 6.7L Power Stroke Diesel 51 01-16-2013 10:04 AM
Cab takes forever to heat up granny_rocket 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 30 12-13-2012 02:37 PM



All times are GMT -5. The time now is 08:35 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup