Is your 91-95 Legend overheating? Got a coolant problem? Post all questions in here. - Page 5 - The Acura Legend & Acura RL Forum
Acura Legend Forum Acura Legend Forum
 

Ľ Auto Insurance

» Featured Product
Ľ 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.
Closed Thread
 
LinkBack Thread Tools Rating: Thread Rating: 20 votes, 4.25 average. Display Modes
Old 01-03-04, 07:30 AM   #61 (permalink)
Registered User
 
Join Date: Aug 2002
Location: Woodinville, WA and Puerto Rico
Posts: 211


Car 1: 1991 black on black coupe


iTrader Score: 0 reviews
That is very similar to what my car is doing as posted above. And their is a valve the controls the flow to the heater core. It is on the fire wall on the engine side, you have to remove your front sway bar to get to it. It isn't vacume powered (at least from what I can see) it has cables going through the fire wall to the interior that must open and close it at a certain temperature.
Cresap is offline  
Sponsored Links
Advertisement
 
Old 01-03-04, 08:15 AM   #62 (permalink)
 
Join Date: Dec 2003
Posts: 32


iTrader Score: 0 reviews
What causes the heater valve to go bad? Also what are all the sensors that make up our cooling system?
nimo253 is offline  
Old 01-03-04, 09:06 AM   #63 (permalink)
Cole Austin
Guest
 
Posts: n/a


Well guys I still have not solved my problem. Since winter is here I have been using my heater and noticed something interesting.

When My temperature gauge goes up (it goes all the way to H ) the heater blows cold air. Then the temp gauge drops and the heater blows really hot air.

The car really is overheating and sometimes I have to pull over to let it cool down. This only happens about a week after I add coolant to the radiator.

I do all the proper steps and bleed the air out, but I still get air inside the system. I still have no external leaks.

Right now I add coolant to my radiator every so often about a 1/6 of a gallon at a time. Its strange b/c I don't get the oil in the coolant or smoke from the exhaust or loss of power that most people talk about with the BHG. When I changed my Thermostat The coolant that came out was perfectly clean.
 
 
Old 01-03-04, 11:54 AM   #64 (permalink)
Registered User
 
Join Date: Aug 2002
Location: Woodinville, WA and Puerto Rico
Posts: 211


Car 1: 1991 black on black coupe


iTrader Score: 0 reviews
Check underneath your passenger seat and see if their is coolant or any fluids underneath. Cause it sounds exactly like my problem. The only place the coolant has shown up is underneath the passenger seat.
Cresap is offline  
Old 01-03-04, 07:22 PM   #65 (permalink)
 
Join Date: Dec 2003
Posts: 32


iTrader Score: 0 reviews
Well i have tore apart my engine bay trying to get to my heads and... i am not gonna go any further than taking off the valve covers... lol messing with the vacuum and egr lines just scares me. so im taking my ride to my mech tomorrow so ill let you guys know what happens afterwards...

btw i got my speedo sender, fan switch sensor... lol i drove over 10K just sitting at the light

Looking for parts?
www.thepartsbin.com
or
www.speedycarparts.com
both are the same company and great service!

Cole Austin:
I very much do have the same symtoms you do... But it seems to me that you do have a BHG... I may be lying... after warm-up try smell the exhaust, kinda like a stinky steam smell with a lil bit of fuel on the side... a few of my friends say its the head gasket... it also can be a cracked or a really warped head... But lets just hope not =T Check your oil dipstick to see if you have any milky spots on it.... if so coolant is going into your block... Or try driving over a dry spot blast your heater and rev your engine to 4k-5k(no more than a min) turn off the car then look underneath to see if you see any wet spots (which you probably have done) (leaky hose(s)) yah and check your carpet for water puddles (leaky heater core\heater core hoses). Try flushing your block and radiator with a water hose while blasting your heater...

My symtoms:
1. Temp gauge goes up
2. Heater blows cold air
3. Drops back down to normal
4. Heater blows hot-hot air (10-20 min)
4. Repeats while local driving... (fine on the highway)
I do have heavy white smoke while idling
I dont lose coolant...
I dont have that milky looking oil dip stick
The coolant color is green, but i do see like oily white spots if you look carefully...
My fan goes on when its on 'H' but the needle doesnt drop until i drive...
Somestimes i have to floor it just to get it back to normal temp...(i just love the sound of the intake WAAAAAAAAAH!)
To me it just seems like the coolant circulation is not really circulating well or something...

What i replaced:
Radiator
Waterpump
Thermostat (170 degree)
Radiator Cap

What im going to replace:
Fan Switch sensor
Head gaskets
Radiator and block flush
Speed sensor

If it still doesnt fix my cooling problems, im gonna change out my heater valve (which im trying to order now).
Maybe i should change out the radiator hoses too?

BTW - Is the ECT (Engine Coolant Temp sensor) the same as the Coolant temp sender?
If not does the ECT effect the way the car cools? I know it effects the fuel flow or something like that...

Last edited by nimo253; 01-03-04 at 10:06 PM.
nimo253 is offline  
Old 01-04-04, 01:00 AM   #66 (permalink)
Cole Austin
Guest
 
Posts: n/a


I had a mechanic look at the car when I first noticed the problem several months ago. Also I let my dad know that I thought it was a BHG from reading all the stories on the forum. Both the Mechanic and my dad highly doubted it was the HG... but now thatís its been several months and the problem is getting worse, its starting to look more and more like the BHG.

Cresap, I considered the fact it was the heater core and had that checked... thatís not the source of the problem.

nimo253, I'm going to take my car to a different mechanic Monday and have them look at it. If it is a BHG... I don't have enough money to buy a new engine or get it fixed. I'll prob end up stripping the car and selling the parts.

Also, my car does the exact same thing you mentioned (nimo253), just I have looked for the white smoke at startup, but its hard to tell if its just white because of the cold outside. Also, my exhaust does not smell any different.... at least to me.
 
Old 01-04-04, 01:50 AM   #67 (permalink)
 
Join Date: Jun 2003
Posts: 1,005


iTrader Score: 0 reviews
my problem:

temp guage starts to go up when idling for an extended period of time, or when driving at low speeds for a while (25 mph or so)

highway driving. no problems, temp guage stays at normal and doesn't move at all

when it starts to go up, if i speed up and drive about 35 or so, the guage goes back to normal

i bled the system, there was some air but i dont know if it was from when i flushed it last or if it's getting in somehow

no external leaks, no white smoke, fans seem to be working fine

i'm gonna bleed the system again to see if air's getting in, will report back

any ideas?
newowner92LS is offline  
Old 01-04-04, 02:31 AM   #68 (permalink)
 
Join Date: Jun 2003
Posts: 1,005


iTrader Score: 0 reviews
edit: went out and checked the fluid level

the radiator was slightly low and the overflow tank was extra full, so fluid is flowing from the radiator into the overflow tank

there was air in the system again so i bled it.

no visible leaks

the temp guage reads normal 98% of the time, it only spikes ever once in a while it seems

how can air be getting in with no leaks: rad cap? HG?

thanks
newowner92LS is offline  
Old 01-04-04, 06:11 AM   #69 (permalink)
Cole Austin
Guest
 
Posts: n/a


newowner92LS, that sounds exactly like what started happening to me, first all I had to do was bleed the air out, then I started needing to add extra coolant, and now I am getting my car checked for BHG. I replaced my radiator cap and it did nothing, but I would recomend replacing the raidator cap and the thermostat, its cheap and might solve your problem.

I'll post what my mechanic says here in a couple of days. Good luck
 
Old 01-04-04, 06:16 AM   #70 (permalink)
 
Join Date: Jun 2003
Posts: 1,005


iTrader Score: 0 reviews
Quote:
Originally posted by Cole Austin
newowner92LS, that sounds exactly like what started happening to me, first all I had to do was bleed the air out, then I started needing to add extra coolant, and now I am getting my car checked for BHG. I replaced my radiator cap and it did nothing, but I would recomend replacing the raidator cap and the thermostat, its cheap and might solve your problem.

I'll post what my mechanic says here in a couple of days. Good luck
i just went out and picked up a new cap, so we'll see if that does anything

and i replaced my thermostat in august

i have no leaks, so i'm hoping the cap will fix it and its not the HG

he just seems wierd to me how the radiator starts to fill the overflow tank for no reason, cause the radiator is low, and the overflow is extra full
newowner92LS is offline  
Old 01-04-04, 09:50 AM   #71 (permalink)
Registered User
 
Join Date: Nov 2002
Location: Kentucky
Posts: 440


Car 1: 91 Legend L Sedan


iTrader Score: 0 reviews
It seems like most of these heating problems end up being the dreaded BHG, but I noticed early on when I was having the heat come on only after the car heated up for a while or reached a certain RPM, there are three molded hoses between the block and the firewall that are kind of hard to get to that can be the culprit.

As the car gets older, it is easy to check and R&R the upper and lower radiator hoses etc. but these get overlooked easily. Because they are molded and because of the bends in them, as they age, they get soft, and almost collapse in on themselves. Only when the engine gets going fast enough to force enough coolant through collapsing hoses will they then flow properly.

That condition coupled with their failing one at a time was I think what contributed to my ending up with a BHG eventually.

Besides people keeping their eyes on the Timing Belt, Water Pump Replacement at 90K, when they get in to do those, these hoses back there should be an automatic replacement too because of their difficulty to reach, and the potential problems they can cause if they begin to collapse or fail while you are on the road somewhere.
Josh is offline  
Old 01-04-04, 02:19 PM   #72 (permalink)
Cole Austin
Guest
 
Posts: n/a


Quote:
Originally posted by Josh
It seems like most of these heating problems end up being the dreaded BHG, but I noticed early on when I was having the heat come on only after the car heated up for a while or reached a certain RPM, there are three molded hoses between the block and the firewall that are kind of hard to get to that can be the culprit.

As the car gets older, it is easy to check and R&R the upper and lower radiator hoses etc. but these get overlooked easily. Because they are molded and because of the bends in them, as they age, they get soft, and almost collapse in on themselves. Only when the engine gets going fast enough to force enough coolant through collapsing hoses will they then flow properly.

That condition coupled with their failing one at a time was I think what contributed to my ending up with a BHG eventually.

Besides people keeping their eyes on the Timing Belt, Water Pump Replacement at 90K, when they get in to do those, these hoses back there should be an automatic replacement too because of their difficulty to reach, and the potential problems they can cause if they begin to collapse or fail while you are on the road somewhere.

Is there any way somebody could have a picture of where these hoses are? and they sound hard to get to...
 
Old 01-04-04, 02:19 PM   #73 (permalink)
Registered User
 
Join Date: Aug 2002
Location: Woodinville, WA and Puerto Rico
Posts: 211


Car 1: 1991 black on black coupe


iTrader Score: 0 reviews
Yea, I actually had the hoses leading to the fire wall crack and break when I was taking them off because they were so brittle. As soon as I saw that I decided that I am going to replace them all why I am at it.
Cresap is offline  
Old 01-05-04, 04:10 AM   #74 (permalink)
 
Join Date: Jan 2004
Posts: 53


iTrader Score: 0 reviews
the problem with the heater is air in the system.this is mostly likly a head gasket problem if the engine has ever been overheated.I new to acura ownership,but I'm an ASE master tech for the last twenty years.from what i have read it sounds like acuras do have some over heating problems which seem to be Age and relay related. I have read that most head gasket blow from being driven/operated in an overheated state.overheated state is from extend driving hot(needle past half way) to needle in the red and steam and coolant everywhere.everybody who is thinking of doing they're own repairs needs to buy/rent cooling system pressure tester get a good one it will pay for it self and are universal,some cars need adapters but you only buy it for the cars you want to test.anybody not knowing how to use one.they can test system for leaks,can test radiator caps,and can also be used to see how fast the cooling system pressure climbs(usually quick climb meens BHG)
styles is offline  
Old 01-05-04, 05:36 AM   #75 (permalink)
Registered User
 
Join Date: Nov 2002
Location: Kentucky
Posts: 440


Car 1: 91 Legend L Sedan


iTrader Score: 0 reviews
Cole Austin: I don't have any pictures I can post, but if you stand in front of the engine when it's cold, if you go straight back just to the left of the center of the block between the firewall and the back of the engine is where they are located. You can reach back there and feel them, but it takes some labor to replace them. When my first one failed, they charged me 200.00 and I didn't know that there were several back there, then when the second one blew, the same place charged me 200.00 again, and I said gee, I wish you would have told me there was more than one and replaced them at the same time.

Then, the third one blew ( and I was really ticked at them to find out there was three), when my wife was driving it, and between the three, I guess a slight overheat somewhere happened, even though I shut them down immediately. So, I ended up with putting almost 600.00 including towing and fluid into those three hoses and probably had a BHG gift to boot.

Maybe someone else can post some pics if they have some.

Styles, I think there are lots of reasons these cars eat head gaskets, but unlike other cars that can tolerate some heat, these seem to be hypersensitive because of some minor design flaw near the #6 or #3 cylinder, so extraordinary caution must be excercised to prevent any minor overheat whatsoever.

Maybe I'll start a new thread requesting some, because I bet a lot of people are thinking they have maintenanced all the cooling system potential problem areas, and have overlooked these potential troublemakers.
Josh is offline  
Sponsored Links
Advertisement
 
Closed Thread

  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 10:58 AM.



Powered by vBulletin®. Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
© AutoGuide