Lower Radiator Hose is Cold!! - The Acura Legend & Acura RL Forum
Acura Legend Forum Acura Legend Forum
 

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   The Acura Legend & Acura RL Forum > Acura Legend > Second Generation Legend (1991-1995)

Second Generation Legend (1991-1995)

Acura-Legend.com is the premier Acura Legend Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
Old 11-17-08, 09:43 AM   #1 (permalink)
Registered User
Bugs Bunny:The Island Of Dr. Moron Champion
 
C-Dog 91LS's Avatar
 
Join Date: Feb 2005
Location: ATL - Southside
Posts: 1,282


Car 1: 1991 Vineyard Gray LS KA7 (Sold)
Car 2: 1997 Chevy 1500 WT
Car 3: Sold the 92 type II


iTrader Score: 9 reviews
Question Lower Radiator Hose is Cold!!

My lower radiator hose stays cool to cold even when the car is fully warmed up. I'v recently cahnged t-stat, got new radiator cap, bled and refilled. A couple of times a week, the temp runs up and back down. Did it yesterday on my way to the game. Temp gauge normal most of the time sometimes goes to just a click above normal. The radiator was recently replaced (within the last year). The only weird thing I can think that I know happened was a rubber piece from my old rad cap seems to have fallen off into the rad.

Anybody had this cold lower hose problem? Any ideas?
__________________


Check me out at:
http://www.cardomain.com/ride/833911
C-Dog 91LS is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-17-08, 09:59 AM   #2 (permalink)
SGM / Type F
 
samblaze's Avatar
 
Join Date: Oct 2007
Location: Lakewood, OH
Posts: 3,653


iTrader Score: 11 reviews
Send a message via Skype™ to samblaze
Quote:
Originally Posted by Clarendon View Post
thank you
You just posted so I don't get it?

OP...is the upper hose getting really hot and does it feel pressurized? Can you hear the t-stat opening/closing? Are you losing coolant at all?

Fluctuating idle is usually a sign of air in the cooling system, follow the DIY on here to bleed and top with coolant and see if air is getting back in the system. I wouls also check your spark plugs (esp #3 and #6 (closes to firewall) for that 'steam cleaned' look. One of the symptoms of my SHG was a heated. distended upper hose and cool lower hose.
__________________
86 Saab 900S Coupe 5MT
94 Acura Legend GS 6MT
04 Subaru Forester XS 4EAT
Sig by Double Glow
samblaze is offline   Reply With Quote
Old 11-17-08, 10:51 AM   #3 (permalink)
Registered User
Bugs Bunny:The Island Of Dr. Moron Champion
 
C-Dog 91LS's Avatar
 
Join Date: Feb 2005
Location: ATL - Southside
Posts: 1,282


Car 1: 1991 Vineyard Gray LS KA7 (Sold)
Car 2: 1997 Chevy 1500 WT
Car 3: Sold the 92 type II


iTrader Score: 9 reviews
Quote:
Originally Posted by samblaze View Post
You just posted so I don't get it?

OP...is the upper hose getting really hot and does it feel pressurized? Can you hear the t-stat opening/closing? Are you losing coolant at all?

Fluctuating idle is usually a sign of air in the cooling system, follow the DIY on here to bleed and top with coolant and see if air is getting back in the system. I wouls also check your spark plugs (esp #3 and #6 (closes to firewall) for that 'steam cleaned' look. One of the symptoms of my SHG was a heated. distended upper hose and cool lower hose.
Upper hose is hot not burning hot. I can hold it but it's not comfortable. Normal shape.

Iddle is steady and normal. I'll check the plugs. I had HG, TB, WP, etc done within the last year.
__________________


Check me out at:
http://www.cardomain.com/ride/833911
C-Dog 91LS is offline   Reply With Quote
Old 11-17-08, 10:58 AM   #4 (permalink)
SGM / Type F
 
samblaze's Avatar
 
Join Date: Oct 2007
Location: Lakewood, OH
Posts: 3,653


iTrader Score: 11 reviews
Send a message via Skype™ to samblaze
Quote:
Originally Posted by C-Dog 91LS View Post
Upper hose is hot not burning hot. I can hold it but it's not comfortable. Normal shape.

Iddle is steady and normal. I'll check the plugs. I had HG, TB, WP, etc done within the last year.
Did they re-use the old head bolts? What did they torque them down to? If all that was done recently then let's focus on the small things first - what is this rubber piece that 'fell into' your radiator? Are you using a different cap now? Is the the rubber sealing ring in the rad cap? Is it possible this is blocking the upper rad hose passage? The other classic reason for a cold lower rad hose is a stuck t-stat/blocked upper hose passage.
__________________
86 Saab 900S Coupe 5MT
94 Acura Legend GS 6MT
04 Subaru Forester XS 4EAT
Sig by Double Glow
samblaze is offline   Reply With Quote
Old 11-17-08, 11:09 AM   #5 (permalink)
Registered User
Bugs Bunny:The Island Of Dr. Moron Champion
 
C-Dog 91LS's Avatar
 
Join Date: Feb 2005
Location: ATL - Southside
Posts: 1,282


Car 1: 1991 Vineyard Gray LS KA7 (Sold)
Car 2: 1997 Chevy 1500 WT
Car 3: Sold the 92 type II


iTrader Score: 9 reviews
Quote:
Originally Posted by samblaze View Post
Did they re-use the old head bolts? What did they torque them down to? If all that was done recently then let's focus on the small things first - what is this rubber piece that 'fell into' your radiator? Are you using a different cap now? Is the the rubber sealing ring in the rad cap? Is it possible this is blocking the upper rad hose passage? The other classic reason for a cold lower rad hose is a stuck t-stat/blocked upper hose passage.
I believe all work was done properly. My Mechanic is good.
I Have a new cap now. The rubber piece that fell off was the small piece in the center of the cap. I believe iwas to seal to small opening in the radiator. Would a radiator flush clear any blockage?
The t-stat was replaced a few weeks ago (again).
__________________


Check me out at:
http://www.cardomain.com/ride/833911
C-Dog 91LS is offline   Reply With Quote
Old 11-17-08, 11:46 AM   #6 (permalink)
SGM / Type F
 
samblaze's Avatar
 
Join Date: Oct 2007
Location: Lakewood, OH
Posts: 3,653


iTrader Score: 11 reviews
Send a message via Skype™ to samblaze
Quote:
Originally Posted by C-Dog 91LS View Post
I believe all work was done properly. My Mechanic is good.
I Have a new cap now. The rubber piece that fell off was the small piece in the center of the cap. I believe iwas to seal to small opening in the radiator. Would a radiator flush clear any blockage?
The t-stat was replaced a few weeks ago (again).
Wasn't trying to diss your mechanic, just asking man. I agree that a flush is a good idea and that small piece probably won't block anything. Well all I can say at this point is have that new t-stat double checked (it may have been a defective piece) Was it an OEM t-stat? Start the car COLD, with the rad cap off and coolant topped off, when it reaches operating temp the t-stat shuld open and the coolant level will suddenly fall in the radiator (keep topping it off). This takes a while sometimes for it to open. But you should be able to tell if it is opening correctly or not.
__________________
86 Saab 900S Coupe 5MT
94 Acura Legend GS 6MT
04 Subaru Forester XS 4EAT
Sig by Double Glow
samblaze is offline   Reply With Quote
Old 11-17-08, 12:11 PM   #7 (permalink)
Registered User
Bugs Bunny:The Island Of Dr. Moron Champion
 
C-Dog 91LS's Avatar
 
Join Date: Feb 2005
Location: ATL - Southside
Posts: 1,282


Car 1: 1991 Vineyard Gray LS KA7 (Sold)
Car 2: 1997 Chevy 1500 WT
Car 3: Sold the 92 type II


iTrader Score: 9 reviews
Quote:
Originally Posted by samblaze View Post
Wasn't trying to diss your mechanic, just asking man. I agree that a flush is a good idea and that small piece probably won't block anything. Well all I can say at this point is have that new t-stat double checked (it may have been a defective piece) Was it an OEM t-stat? Start the car COLD, with the rad cap off and coolant topped off, when it reaches operating temp the t-stat shuld open and the coolant level will suddenly fall in the radiator (keep topping it off). This takes a while sometimes for it to open. But you should be able to tell if it is opening correctly or not.
No diss taken. Statement wasn't meant the way it read (if that makes sense).
I'll try the flush and have the mech check the tstat.
Thanks for the advice if you come up with anything else, please post back.
If anybody else has ideas, post I'm open.
__________________


Check me out at:
http://www.cardomain.com/ride/833911
C-Dog 91LS is offline   Reply With Quote
Old 11-17-08, 10:58 PM   #8 (permalink)
Registered User
 
Steveman09's Avatar
 
Join Date: Jun 2003
Location: Sandy, OR
Posts: 1,693


Car 1: 94 Legend LS Coupe Type-II
Car 2: 87 Subaru GL10 Turbo
Car 3: 91 Eagle Talon TSI


iTrader Score: 0 reviews
Send a message via AIM to Steveman09
A very simple and common G2 issue that is usually overlooked is the gauge in the cluster itself. My G2 TypeII Temp Gauge has proved to be a liar lately. My gauge just starting doing the same thing on its own recently but I wasn't convinced and I had no other signs of a BHG.

So here's something to check out :

Get a Lazer Temperature Gun and check all the Radiator hoses and radiator yourself to see what temperature they are really at. Also remove the Black 3.2L V6 Engine Cover on the drivers side of the engine. You will see a 1-wire Temperature sensor, remove this wire it just pulls off and check for corrosion, I was able to clean mine and it fixed my gauge. Also use the Lazer gun with the car warmed up and read the temp sending unit with the lazer, this will tell you the REAL temp of the engine. It should be anywhere from 200-210F under normal operating conditions.

Now get a DVMM and check the OHMS (resistance) of the ECT Sensor when the engine is COLD and WARMED UP, readings should be :

COLD = MORE THAN 144-ohms
133F = 142-ohms
212F WARMED UP = 39 to 42-ohms

If the sensor is out of specs replace the sensor, if the sensor is within specs your Gauge is most liklely the problem.
__________________
94 Legend LS Coupe Type-II Nitrous Injected
Steveman09 is offline   Reply With Quote
Old 11-17-08, 11:17 PM   #9 (permalink)
Registered User
 
reboticon's Avatar
 
Join Date: May 2008
Location: Knoxville
Posts: 2,293


Car 1: 92/95Legends, 88/89 CRXs
Car 2: 91 civic, 90 Integra
Car 3: 71T-bird, 95Explorer


iTrader Score: 6 reviews
The lower hose wont get hot until the thermostat opens. Note this is backwards of a typical cooling system. If the car is getting hot, and the lower hose staying cool, you either have excessive air in your system, broken T-stat, or seeping head gasket.
__________________
Fixing legends is easier than fixing lolcats, but the parts are way more expensive

My Low Buck Non-Legend Builds
91 Civic Sedan (1.5 A/T -> 1.6vtec 5 spd)
90 DA Teg
89 Boosted CRX!
reboticon is offline   Reply With Quote
Old 11-18-08, 11:08 AM   #10 (permalink)
Registered User
Bugs Bunny:The Island Of Dr. Moron Champion
 
C-Dog 91LS's Avatar
 
Join Date: Feb 2005
Location: ATL - Southside
Posts: 1,282


Car 1: 1991 Vineyard Gray LS KA7 (Sold)
Car 2: 1997 Chevy 1500 WT
Car 3: Sold the 92 type II


iTrader Score: 9 reviews
Quote:
Originally Posted by Steveman09 View Post
A very simple and common G2 issue that is usually overlooked is the gauge in the cluster itself. My G2 TypeII Temp Gauge has proved to be a liar lately. My gauge just starting doing the same thing on its own recently but I wasn't convinced and I had no other signs of a BHG.

So here's something to check out :

Get a Lazer Temperature Gun and check all the Radiator hoses and radiator yourself to see what temperature they are really at. Also remove the Black 3.2L V6 Engine Cover on the drivers side of the engine. You will see a 1-wire Temperature sensor, remove this wire it just pulls off and check for corrosion, I was able to clean mine and it fixed my gauge. Also use the Lazer gun with the car warmed up and read the temp sending unit with the lazer, this will tell you the REAL temp of the engine. It should be anywhere from 200-210F under normal operating conditions.

Now get a DVMM and check the OHMS (resistance) of the ECT Sensor when the engine is COLD and WARMED UP, readings should be :

COLD = MORE THAN 144-ohms
133F = 142-ohms
212F WARMED UP = 39 to 42-ohms

If the sensor is out of specs replace the sensor, if the sensor is within specs your Gauge is most liklely the problem.
THANKS! I'll check this too.
__________________


Check me out at:
http://www.cardomain.com/ride/833911
C-Dog 91LS is offline   Reply With Quote
Old 11-18-08, 11:12 AM   #11 (permalink)
Registered User
Bugs Bunny:The Island Of Dr. Moron Champion
 
C-Dog 91LS's Avatar
 
Join Date: Feb 2005
Location: ATL - Southside
Posts: 1,282


Car 1: 1991 Vineyard Gray LS KA7 (Sold)
Car 2: 1997 Chevy 1500 WT
Car 3: Sold the 92 type II


iTrader Score: 9 reviews
Quote:
Originally Posted by reboticon View Post
The lower hose wont get hot until the thermostat opens. Note this is backwards of a typical cooling system. If the car is getting hot, and the lower hose staying cool, you either have excessive air in your system, broken T-stat, or seeping head gasket.
Damn! I hope it's not the HG. I just had all that done.
__________________


Check me out at:
http://www.cardomain.com/ride/833911
C-Dog 91LS is offline   Reply With Quote
Old 08-11-11, 06:45 PM   #12 (permalink)
Registered User
 
Join Date: Aug 2011
Location: Virginia
Posts: 1


Car 1: 1993 Acura Legend
Car 2: 2001 Acura CL Type S


iTrader Score: 0 reviews
Quote:
Originally Posted by C-Dog 91LS View Post
My lower radiator hose stays cool to cold even when the car is fully warmed up. I'v recently cahnged t-stat, got new radiator cap, bled and refilled. A couple of times a week, the temp runs up and back down. Did it yesterday on my way to the game. Temp gauge normal most of the time sometimes goes to just a click above normal. The radiator was recently replaced (within the last year). The only weird thing I can think that I know happened was a rubber piece from my old rad cap seems to have fallen off into the rad.

Anybody had this cold lower hose problem? Any ideas?
I had the same problem. I changed the thermostat to a new one from the acura store. Do not buy one from anybody other than acura, because they dont work properly for acura cars. Once I changed the thermostat, the car runs great. the thermostat costs about $40 from acura, its more expensive than a generic autostore but it is the only one that will work for your acura. I know because i tried.
flyyoungman1 is offline   Reply With Quote
Old 08-11-11, 10:52 PM   #13 (permalink)
Fut RIP
 
L3GDKANG/JDMKANG's Avatar
 
Join Date: Apr 2006
Location: 10-A-KEY
Posts: 10,113


Car 1: 91 Alpha/Alpha Touring KA7
Car 2: 92 Alpha/ AlphaT KA8
Car 3: 91L,93LS,94LS KA7's


iTrader Score: 39 reviews
This thread is super old but I've bought t stats from auto zone and have never had a issue with one because it has the releave valve on the side just like the Acura 1. I own 7 legends and have only had 1 bhg so far!
__________________

Yes im back! Alpha/AlphaTouring!http://www.acura-legend.com/vbulleti...ang%2Fjdm-kang
Originally Posted by Blackend
Good to meet you too Willie. I tell ya, when we were walking the Auto-X course and you guys started pulling in, I had no idea who it was until I saw the green machine and we're all like "ooohhhh, that's Willie and the Acuraholicks!"

Glad you guys made it out, and nice meeting all of you.
L3GDKANG/JDMKANG is offline   Reply With Quote
Old 08-12-11, 07:01 AM   #14 (permalink)
Moderator
 
BIGBOY's Avatar
 
Join Date: Sep 2008
Location: Home of The Wire!
Posts: 7,284


Car 1: 94 acura legend ls


iTrader Score: 8 reviews
The thermostat from other honda's work as well and cost half the price.
__________________
BIGBOY is offline   Reply With Quote
Old 04-02-12, 04:22 PM   #15 (permalink)
Registered User
 
stevieque's Avatar
 
Join Date: Oct 2010
Location: atlanta
Posts: 37


Car 1: 95 acura legend coupe


iTrader Score: 0 reviews
thermostat

Quote:
Originally Posted by BIGBOY View Post
The thermostat from other honda's work as well and cost half the price.
Hey there, can you say which other model of honda thermostat can be used with our cars.Thanks.
stevieque is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  The Acura Legend & Acura RL Forum > Acura Legend > Second Generation Legend (1991-1995)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 10:15 PM.



Powered by vBulletin®. Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
© AutoGuide