Coolant Overflowing on my '95 Wagon - Chevy Impala SS Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 15 (permalink) Old 05-28-2018, 07:42 PM Thread Starter
Senior Member
 
WaWaZat's Avatar
 
Join Date: Apr 2007
Location: Chicago
Posts: 566
 
Coolant Overflowing on my '95 Wagon

The upper rad hose clamp broke and the upper hose came off while driving last week. I put on a new clamp and refilled the system. On our 1st hot day this year here in Chi-Town, coolant suddenly started overflowing from the reservoir cap.

Bad cap or perhaps bad thermostat? How do I diagnose the thermostat?

Michael Szromba
'95 Roadmaster Wagon almost 300K miles
'94 Roadmaster Wagon low 100K miles
...both burgundy woodgrain!
WaWaZat is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 05-28-2018, 08:40 PM
Senior Member
 
Join Date: Jan 2001
Location: St. Louis
Posts: 7,705
 
Quote:
Originally Posted by WaWaZat View Post
...
How do I diagnose the thermostat?

Just.

Don't.

It's a farkin' TS.
It's a farkin' maint./ item.

Get a farkin' new one. jk or lol or haha


Seriously, heard 4 decades ago if'n ya overheat real bad once then your TS might end up toast. Long story about my wife's Explorer -- yah so won't dare bother with details, but end story that's what I confirmed 17 years ago using it to take a stove to a colleague.

\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!
96 Black is offline  
post #3 of 15 (permalink) Old 05-28-2018, 10:20 PM
Senior Member
 
4DoorSS's Avatar
 
Join Date: Nov 2008
Location: Beautiful Chester County, PA
Posts: 7,975
 
Quote:
Originally Posted by WaWaZat View Post
The upper rad hose clamp broke and the upper hose came off while driving last week. I put on a new clamp and refilled the system. On our 1st hot day this year here in Chi-Town, coolant suddenly started overflowing from the reservoir cap.

Bad cap or perhaps bad thermostat? How do I diagnose the thermostat?
It's worth asking....are you sure you properly bled the air out of the system? Trapped air can cause the engine to overheat and push out the coolant.

As for the farkin Tstat you can take it out and drop it in a pot of hot water (Tstat temp) to see if it opens. But for me, at about $10-$15, just replace it and the oring gasket.

================================================== =============


'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
4DoorSS is offline  
 
post #4 of 15 (permalink) Old 05-29-2018, 07:23 AM
Senior Member
 
Blue Wail's Avatar
 
Join Date: Sep 2000
Location: EFI Performance, MD
Posts: 5,229
 
Send a message via AIM to Blue Wail
Blue Wail is offline  
post #5 of 15 (permalink) Old 05-29-2018, 02:46 PM
Senior Member
 
1slow96's Avatar
 
Join Date: Jun 2011
Location: Dayton , Ohio
Posts: 6,725
 
Garage
Or,the 160 degree version for just a couple bucks more. If you don't recall when cap was replaced,get one of those too.

Winner 2001 Road Course (prep. class) Detroit,MI
Winner 2006 Drag race (SS class) Indianapolis,IN
Quickest event reaction time .013sec. (final-round)
Class Winner 2014 Charlotte,NC. 2016 NOLA car shows
Winner 2019 Road Course (prep.class) Pittsbugh,PA
1slow96 is offline  
post #6 of 15 (permalink) Old 05-29-2018, 04:46 PM Thread Starter
Senior Member
 
WaWaZat's Avatar
 
Join Date: Apr 2007
Location: Chicago
Posts: 566
 
Funny, I picked up a new TS from O’Reilly’s and dropped it in. Normally on my temp gauge, the needle is on the fourth line which is the very center of the gauge . Since this new TS, the needle only goes up to the second line.

What are the advantages and disadvantages of running 160 TS? Will I get less heat in the winter with the cooler one?

Michael Szromba
'95 Roadmaster Wagon almost 300K miles
'94 Roadmaster Wagon low 100K miles
...both burgundy woodgrain!
WaWaZat is offline  
post #7 of 15 (permalink) Old 05-29-2018, 05:34 PM
Senior Member
 
1slow96's Avatar
 
Join Date: Jun 2011
Location: Dayton , Ohio
Posts: 6,725
 
Garage
Thermostat is super easy to swap if you feel you need more heat in the wintertime. Personally,I find heat to be satisfactory...

Winner 2001 Road Course (prep. class) Detroit,MI
Winner 2006 Drag race (SS class) Indianapolis,IN
Quickest event reaction time .013sec. (final-round)
Class Winner 2014 Charlotte,NC. 2016 NOLA car shows
Winner 2019 Road Course (prep.class) Pittsbugh,PA
1slow96 is offline  
post #8 of 15 (permalink) Old 05-29-2018, 09:04 PM
Senior Member
 
Join Date: Jan 2001
Location: St. Louis
Posts: 7,705
 
Quote:
Originally Posted by 1slow96 View Post
Thermostat is super easy to swap if you feel you need more heat in the wintertime. Personally,I find heat to be satisfactory...

From what I hear be sure to combine a 160 TS change with appropriate programming or that TS and the fan kick-ons will fight each other.

\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!
96 Black is offline  
post #9 of 15 (permalink) Old 05-29-2018, 09:24 PM
Senior Member
 
1slow96's Avatar
 
Join Date: Jun 2011
Location: Dayton , Ohio
Posts: 6,725
 
Garage
Fans will operate as before,but will operate less... If install a hotter stat with reprogrammed fans is where issues with fan operation occurs.

Winner 2001 Road Course (prep. class) Detroit,MI
Winner 2006 Drag race (SS class) Indianapolis,IN
Quickest event reaction time .013sec. (final-round)
Class Winner 2014 Charlotte,NC. 2016 NOLA car shows
Winner 2019 Road Course (prep.class) Pittsbugh,PA
1slow96 is offline  
post #10 of 15 (permalink) Old 05-31-2018, 09:12 AM
Senior Member
 
Join Date: Dec 2008
Location: Grand Rapids, MI
Posts: 149
 
Depending on your cooling system the only real problem is you may never get into full "run" mode where your reading the O2 sensors and it dumps more fuel into the system. Which requires a reprogramming to knock it out of Open loop. (Open/Closed loop are where the O2 sensors are ignored or looked at for fuel management. The idea is to get your engine up to temp faster so the pollution controls work quicker. But I never remember if Open or Closed loop is the phase where it ignores the O2 sensors and dumps fuel. Thought Closed loop is normal operation and Open loop is startup but I could be wrong.)
rodney is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy Impala SS 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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome