87 mustang gt overheating? - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

Join Mustang Evolution Today


Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 11-28-2016, 11:31 PM   #1
Registered Member
Regular
 
Kingakeem17's Avatar
 
Join Date: Jul 2013
Location: Bladensburg ,Md
Region: Maryland
Posts: 42
87 mustang gt overheating?

Have a 87 recently while driving started to over heat check it out top hose was cold I assume the thermostat wasn't opening got a new one still the same issue need some help


Sent from my iPhone using Mustang Evolution
Kingakeem17 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-29-2016, 06:23 AM   #2
Evolution's Finest
Supporter
 
Project Pony's Avatar
 
Join Date: Jan 2011
Location: Aiken
Region: South Carolina
Posts: 3,268
I'm not as familiar with the older 302, but if the tstat is new, and you've flushed the system and checked flow blockage, I'd be leaning towards either a failed or on its way out water pump. But definitely check the radiator first.

Sent from my SAMSUNG-SM-G920AZ using Mustang Evolution mobile app
__________________
[SIGPIC][/SIGPIC]
Project Pony is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-29-2016, 08:02 AM   #3
Registered Member
Regular
 
ER12883's Avatar
 
Join Date: Aug 2013
Location: Colorado
Region: Colorado
Posts: 673
A few questions: What's your engine, water pump and fan setup? How were you driving - higher rpms, highway, traffic, etc? Are you determining that you are overheating because of the gauge only? Is this situation repeatable every time? Did you drill a small hole in your t-stat before installing for air to escape?

Personally I would start by letting it sit at idle as it heats and wait for it to reach temp. If everything works as it should once hot, you might be having lower hose collapse at higher rpms. If you still overheat at idle, that points to your thermostat, or a blockage or serious amounts of air in your system.

Let us know what you find out
ER12883 is offline   Reply With Quote
Old 11-29-2016, 11:57 AM   #4
Registered Member
Regular
 
Kingakeem17's Avatar
 
Join Date: Jul 2013
Location: Bladensburg ,Md
Region: Maryland
Posts: 42
302 with stock radiator and stock fan and water pump the antifreeze keeps running to the overflow bottle and not the thermostat


Sent from my iPhone using Mustang Evolution
Kingakeem17 is offline   Reply With Quote
Old 11-29-2016, 11:57 AM   #5
Registered Member
Regular
 
Kingakeem17's Avatar
 
Join Date: Jul 2013
Location: Bladensburg ,Md
Region: Maryland
Posts: 42
Ok will do


Sent from my iPhone using Mustang Evolution
Kingakeem17 is offline   Reply With Quote
Old 11-29-2016, 12:46 PM   #6
Staff

Regular
Staff
 
Strange Mud's Avatar
 
Join Date: Aug 2013
Location: Small Town
Region: Connecticut
Posts: 4,276
thread merged!

Mud
__________________
"every one of you was going 50"
Strange Mud is offline   Reply With Quote
Old 11-30-2016, 02:01 AM   #7
Registered Member
Regular
 
ER12883's Avatar
 
Join Date: Aug 2013
Location: Colorado
Region: Colorado
Posts: 673
Quote:
Originally Posted by Project Pony View Post
I'm not as familiar with the older 302

Haha, I was gonna say I'm not as familiar with the newer mustangs...
ER12883 is offline   Reply With Quote
Old 11-30-2016, 02:07 AM   #8
Registered Member
Regular
 
ER12883's Avatar
 
Join Date: Aug 2013
Location: Colorado
Region: Colorado
Posts: 673
One other thing to be aware of, if your rad cap isn't holding pressure, that will lower the boiling point, and could cause it to overflow into the tank. Probably not the problem since your upper hose stays cool, but I just wanted to mention it.
ER12883 is offline   Reply With Quote
Old 12-03-2016, 05:21 PM   #9
Registered Member
Regular
 
Kingakeem17's Avatar
 
Join Date: Jul 2013
Location: Bladensburg ,Md
Region: Maryland
Posts: 42
Quote:
Originally Posted by Project Pony View Post
I'm not as familiar with the older 302, but if the tstat is new, and you've flushed the system and checked flow blockage, I'd be leaning towards either a failed or on its way out water pump. But definitely check the radiator first.

Sent from my SAMSUNG-SM-G920AZ using Mustang Evolution mobile app
Just flush the system upper hose got hot finally but the still no heat and the car started to run hot again



Sent from my iPhone using Mustang Evolution

---------- Post added at 05:21 PM ---------- Previous post was at 05:21 PM ----------

Quote:
Originally Posted by ER12883 View Post
One other thing to be aware of, if your rad cap isn't holding pressure, that will lower the boiling point, and could cause it to overflow into the tank. Probably not the problem since your upper hose stays cool, but I just wanted to mention it.

Just flush the system upper hose got hot finally but the still no heat and the car started to run hot again



Sent from my iPhone using Mustang Evolution
Kingakeem17 is offline   Reply With Quote
Old 12-05-2016, 03:39 PM   #10
Registered Member
Regular
 
smurf stang's Avatar
 
Join Date: Mar 2014
Location: Miami
Region: Florida
Posts: 1,291
So pretty much stock everything I see. Did this just start happening? How long have you had this car? How long has it been running right before this started to happen?

Ok so you are going to need a good mechanical gauge to see where and when the temps are shooting up.

So your checked and the tstat is good?
Proper level of coolant?
Flushed very well and no obstructions?
Bottom hose not collapsing?
Did you burp the coolant system? Did you jack up the car when you burped it?
Also do a pressure test. You can get this from the Auto Parts store for free.
Finally when you are burping the system and you keep seeing bubbles and more bubbles it might be a head gasket which is causing the overheating.
__________________
2016 VW GTI 2.0 Turbo

1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
smurf stang is offline   Reply With Quote
Old 12-17-2016, 09:26 PM   #11
Registered Member
Regular
 
wbrockstar's Avatar
 
Join Date: Mar 2015
Location: Nashville
Region: Tennessee
Posts: 278
One thing you can check,related to the heater,is the heater hose.81-88 models,the 93 Cobra & police intercepter Mustangs came with a metal coolant flow restricter in the larger heater hose.Since its passage is smaller than the heater hose passage,corrosion can clog this restricter easier than it can clog the heater hose itself.If corrosion builds up in this restricter,it'll cut the flow of coolant off completely to the heater core.The restricter is shown in the link below & the picture below.

https://www.google.com/search?q=89+5...xj1qmVNYmQM%3A
Attached Thumbnails
Click image for larger version

Name:	m-18d358-1.jpg
Views:	28
Size:	23.4 KB
ID:	211921  
__________________
D.S.S. 331 10.5:1
Trick Flow Top End
XE276HR 0.544/0.544
80mm maf/70mm tb
1 5/8" Longtubes
Cat Hpipe/2 Chamber FM
wbrockstar is offline   Reply With Quote
Old 12-19-2016, 12:48 PM   #12
Registered Member
Regular
 
smurf stang's Avatar
 
Join Date: Mar 2014
Location: Miami
Region: Florida
Posts: 1,291
OP any progress......come on man.
__________________
2016 VW GTI 2.0 Turbo

1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
smurf stang is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mustang Overheating rodgersc77 Pre-2005 V6 Mustang 36 05-15-2015 12:22 AM
Mustang overheating! mustangmar2001 1996-2004 Mustang GT 10 07-18-2013 09:05 PM
Classic Mustang overheating? Berwick Classic Mustangs 8 03-30-2010 10:03 PM
Mustang II overheating bad? berwynne Classic Mustangs 11 03-11-2010 05:11 AM
66 mustang overheating question? wylingford General Mustang Discussion 6 03-09-2010 10:06 PM

» Like Us On Facebook



12:02 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.