Heater Valve Deleted...How To.
#51
Supreme Member
Join Date: May 2005
Location: San Diego, CA
Posts: 1,701
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
What kinda cap ???
What do you guys use to cap of the T fitting down below ??
I had nothing laying around so I had to reconnect a piece of the hose and plug it with a huge screw, for now.
I had nothing laying around so I had to reconnect a piece of the hose and plug it with a huge screw, for now.
#52
Member
Join Date: Aug 2006
Location: new york
Posts: 234
Likes: 0
Received 1 Like
on
1 Post
Car: 89camaro rs
Engine: 350tbi (needs carb!)
Transmission: 700r4
Axle/Gears: 32x in process
i used a fan switch that i had layin around worked perfect.lol........ for now.
on another note i did this today and everything seems ok but, u just connect the two hoses(the one that goes to the heater core on the fire wall and the one that goes to the manifold, next to the dizzy) together ,and then plug the hose that runs along the frame rail? just makin shure dont want to have antifreeze going were it isnt soppose to go.
on another note i did this today and everything seems ok but, u just connect the two hoses(the one that goes to the heater core on the fire wall and the one that goes to the manifold, next to the dizzy) together ,and then plug the hose that runs along the frame rail? just makin shure dont want to have antifreeze going were it isnt soppose to go.
#53
Supreme Member
Join Date: May 2005
Location: San Diego, CA
Posts: 1,701
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
For now, I simply remove the heater control valve, and connected the two hoses together right over the valve cover, using a piece of tubing.
It seems however, like the car heats up a lot quicker than before. COULD be that I lost a lot of anti freeze when the valve broke and I simply refilled with water, but shouldn't water handle dissipating the heat better anyway ?
It seems however, like the car heats up a lot quicker than before. COULD be that I lost a lot of anti freeze when the valve broke and I simply refilled with water, but shouldn't water handle dissipating the heat better anyway ?
#54
Supreme Member
Join Date: Jul 2000
Location: Ga
Posts: 1,854
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 RS
Engine: 305
Transmission: T5
Axle/Gears: 3.73
I first purchased some rubber caps and clamped them on the fitting with regular hose clamps and it looked clean but every one developed a leak for some reason so I ended up doing as you did with a plug and short piece of hose. It still looks far better than the stock GM mess.
#56
Supreme Member
Join Date: May 2005
Location: San Diego, CA
Posts: 1,701
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
*LOL* Yeah know ya did, but now which one of us has a fiberglass Z28 hood waiting to be put on the car, u or me hehehehe ya take it easy buckaroo
#60
Supreme Member
Join Date: May 2005
Location: San Diego, CA
Posts: 1,701
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
OK, ran into two problems today.
1) Decided to ditch the hose with a screw in it, which was used to plug the T-fitting by the frame. Used a 3/8 plug, it went in alright, with thread sealer, took it around the block, looked, yep it's squirting water. So tomorrow I'll try ANOTHER 3/8, because one of them is 3/8 pipe thread the other one is something else.
2) Decided to cut the hoses closer to the firewall, that was a slight mistake. I couldn't get the copper 90 degree bend tubing to go inside the hoses, deep enough.
Any tricks to get tubes/piping inside hoses ? Lubrication of some kind hmmm heating the hose with something .. any advice ?
1) Decided to ditch the hose with a screw in it, which was used to plug the T-fitting by the frame. Used a 3/8 plug, it went in alright, with thread sealer, took it around the block, looked, yep it's squirting water. So tomorrow I'll try ANOTHER 3/8, because one of them is 3/8 pipe thread the other one is something else.
2) Decided to cut the hoses closer to the firewall, that was a slight mistake. I couldn't get the copper 90 degree bend tubing to go inside the hoses, deep enough.
Any tricks to get tubes/piping inside hoses ? Lubrication of some kind hmmm heating the hose with something .. any advice ?
#61
Supreme Member
Join Date: Jul 2000
Location: Ga
Posts: 1,854
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 RS
Engine: 305
Transmission: T5
Axle/Gears: 3.73
#62
Supreme Member
Join Date: May 2005
Location: San Diego, CA
Posts: 1,701
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
I'll try that, I think part of the problem may be the copper bend having a bead on both ends.
#63
Supreme Member
Join Date: May 2005
Location: San Diego, CA
Posts: 1,701
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
Tried a different plug on the T-fitting, teflon tape and well .. it still leaks a tiny bit, so I guess I'll go back to using a hose and plug the hose instead.
#64
Supreme Member
iTrader: (5)
Join Date: Aug 2006
Location: Cleveland, Ohio
Posts: 2,491
Likes: 0
Received 5 Likes
on
5 Posts
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
DEWEY316
Yo dewey, where did you get your delete box??? I thought only 1 person made them??? Also because I dont want to keep running back and forth between the auto parts store and my house, what could I use to plug up the frame rail line at the t spot. Looks like you used something that pushed into there??? Should I use a petcock or something like that???
#65
Supreme Member
Thread Starter
Join Date: Mar 2001
Location: Portland, OR www.cascadecrew.org
Posts: 6,577
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
The delete box is a factory one, I just cleaned it up, and painted it. Just keep an eye out in the classifieds, and teh junk yard. The yard charged me like $5 for it. You also need to get a non-ac blower motor.
It is just a rubber plug. At any parts store, just go thier fittings section, I grabbed a handful of plugs in diffrence sizes, then found the one that fit, and hose clamped it. I have not had a single problem.
--John
It is just a rubber plug. At any parts store, just go thier fittings section, I grabbed a handful of plugs in diffrence sizes, then found the one that fit, and hose clamped it. I have not had a single problem.
--John
#66
Supreme Member
iTrader: (5)
Join Date: Aug 2006
Location: Cleveland, Ohio
Posts: 2,491
Likes: 0
Received 5 Likes
on
5 Posts
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Thanks for letting me know. I am not sure I want to pay $150 for American Graffitti's one. Yeah theirs are $130 and $20 shipping, but are fiberglass and come with complete kit, ready to go. I am going to e-mail them now and find out if thats true.
#67
Junior Member
Join Date: Aug 2007
Location: denton, tx
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 formula 305 tbi
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.73
Re: Heater Valve Deleted...How To.
i know this thread is way old, but does anyone know what you are suppose to do with the vacuum line that runs to the top of the heater valve after you take off everything else?
#68
Supreme Member
iTrader: (1)
Join Date: Jul 2001
Location: San Jose, CA
Posts: 1,828
Likes: 0
Received 0 Likes
on
0 Posts
Car: 2002 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
Re: Heater Valve Deleted...How To.
put a screw into it.
Do you have AC?
On my 90RS I did the heater valve and AC delete...
after that i replaced the HVAC controls with heater only controls from a non AC car (look on ebay)
The original heater controls were vacuum operated while the non AC controls were lever operated. I was able to complete remove the vacuum port/tap at the back of the intake manifold and all the vacuum lines that were connected to it (heater valve and HVAC controls).
The only negative was that my heat only came from the defroster because I did not have a lever to control where the heat is routed but that did not bother me. I was still able to switch between cool air and hot air and everywhere in between.
Do you have AC?
On my 90RS I did the heater valve and AC delete...
after that i replaced the HVAC controls with heater only controls from a non AC car (look on ebay)
The original heater controls were vacuum operated while the non AC controls were lever operated. I was able to complete remove the vacuum port/tap at the back of the intake manifold and all the vacuum lines that were connected to it (heater valve and HVAC controls).
The only negative was that my heat only came from the defroster because I did not have a lever to control where the heat is routed but that did not bother me. I was still able to switch between cool air and hot air and everywhere in between.
#69
Junior Member
Join Date: Aug 2007
Location: denton, tx
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 formula 305 tbi
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.73
Re: Heater Valve Deleted...How To.
that's what i figured, i have ac though, so will this still be an ok method to use?
#70
Supreme Member
iTrader: (1)
Join Date: Jul 2001
Location: San Jose, CA
Posts: 1,828
Likes: 0
Received 0 Likes
on
0 Posts
Car: 2002 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
Re: Heater Valve Deleted...How To.
yeah, just plug it up with something and zip tie it out of the way....
I just typed all that other stuff in case you were trying to strip your car down and get rid of some hoses/wires/vacuum lines/etc
I just typed all that other stuff in case you were trying to strip your car down and get rid of some hoses/wires/vacuum lines/etc
#71
Junior Member
Join Date: Aug 2007
Location: denton, tx
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1990 formula 305 tbi
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 3.73
Re: Heater Valve Deleted...How To.
oh ok awesome. thank for replying so quick, i'm gonna go finish it all up.
#72
Senior Member
iTrader: (5)
Join Date: Sep 2006
Location: Austria
Posts: 951
Likes: 0
Received 2 Likes
on
2 Posts
Car: 84 TA / 89 Formula
Engine: LS1 / L03
Transmission: T56 / 700R4
Axle/Gears: 3.73 / 3.27
Re: Heater Valve Deleted...How To.
old thread, but still feel like making a comment on that thread.
imho that's exactly the point why we have that heater valve. even with that flapper in place to divert air away (HVAC cold setting) or right through the interior heater matrix (HVAC hot setting).. the heater matrix will always get hot coolant, warming up the interior, when the heater valve is removed.
just wondering what a rebuild to the heater box would do for that issue..?
My 83 did not have that vacuum actuated valve and all either. I did notice however, that even in the summertime, it seemed like there was always heat coming into the interior (said 'engine' !?) compartment.
Most likely that was because of the constant flow of coolant into the heater core. So this was probably GM's attempt to try to remove that heat by keeping the heater core closed, until needed.
That's my take on it, of course I a probably totally wrong, and in that case, someone will come along and tell us all exactly why this was done.
Most likely that was because of the constant flow of coolant into the heater core. So this was probably GM's attempt to try to remove that heat by keeping the heater core closed, until needed.
That's my take on it, of course I a probably totally wrong, and in that case, someone will come along and tell us all exactly why this was done.
That last post makes an interesting point. If your car is old you may want to rebuild your heater box or you might get constant heat. My 68 Cougar had this issue when I did the same thing to it and you always had heat. I rebuilt the heater box with new seals and it was fine.
#73
Senior Member
iTrader: (1)
Join Date: Aug 2003
Location: pnw near portland or.
Posts: 506
Likes: 0
Received 3 Likes
on
3 Posts
Car: 91 RS convertible
Engine: 330 hp vortec 350. TBI
Transmission: 5 Speed
Axle/Gears: 3.73 Moiser 12 bolt/Wilwood disc's
Re: Heater Valve Deleted...How To.
OK read it all. I would like to clean up my engine bay too. I want 2 hoses to the fire wall and one of them to the engine and the other the rad. I still want my a/c but am **** canning the air pump. There's a valve looking thing and a square plastic box I want gone. That whole hoseing system is very confusing. Thanks
#74
Junior Member
Re: Heater Valve Deleted...How To.
OK read it all. I would like to clean up my engine bay too. I want 2 hoses to the fire wall and one of them to the engine and the other the rad. I still want my a/c but am **** canning the air pump. There's a valve looking thing and a square plastic box I want gone. That whole hoseing system is very confusing. Thanks
Okay. It's 2022 and I have deleted the diverter valve, rerouting the firewall hoses at the firewall property. I also removed the hideous smog? related plastic eyesore that was in the way.
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
Do I hide them in the loom as they are, connect them together, or what?
Its the only part Im unsure of.
I'm stumped as to their purpose and could do with some help...
Not sure how this forum works, and the last post on this thread was 2012. So I'm unsure if my question will be seen...Anyways I will try and attach a picture
#75
Re: Heater Valve Deleted...How To.
I also removed the hideous smog? related plastic eyesore that was in the way.
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
I'm stumped as to their purpose and could do with some help...
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
I'm stumped as to their purpose and could do with some help...
...maybe you shouldn't mess with it.
#76
Junior Member
Re: Heater Valve Deleted...How To.
Well, seeing you know nothing about me or my mechanical and/orauto electrical capabilities, I'll rise above your needing to feel important and ask, can you help me find a safe location to stow the plugs/wires in my question or not?
This forum is here to share and help one another out with our third gens. Your condescending remarks are not welcome.
Kindly, either provide 'said' help, or move along...
This forum is here to share and help one another out with our third gens. Your condescending remarks are not welcome.
Kindly, either provide 'said' help, or move along...
#77
Supreme Member
Re: Heater Valve Deleted...How To.
Okay. It's 2022 and I have deleted the diverter valve, rerouting the firewall hoses at the firewall property. I also removed the hideous smog? related plastic eyesore that was in the way.
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
Do I hide them in the loom as they are, connect them together, or what?
Its the only part Im unsure of.
I'm stumped as to their purpose and could do with some help...
Not sure how this forum works, and the last post on this thread was 2012. So I'm unsure if my question will be seen...Anyways I will try and attach a picture
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
Do I hide them in the loom as they are, connect them together, or what?
Its the only part Im unsure of.
I'm stumped as to their purpose and could do with some help...
Not sure how this forum works, and the last post on this thread was 2012. So I'm unsure if my question will be seen...Anyways I will try and attach a picture
#78
Supreme Member
Re: Heater Valve Deleted...How To.
Okay. It's 2022 and I have deleted the diverter valve, rerouting the firewall hoses at the firewall property. I also removed the hideous smog? related plastic eyesore that was in the way.
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
Do I hide them in the loom as they are, connect them together, or what?
Its the only part Im unsure of.
I'm stumped as to their purpose and could do with some help...
Not sure how this forum works, and the last post on this thread was 2012. So I'm unsure if my question will be seen...Anyways I will try and attach a picture
MO
I've spent hours on here and youtube trying to find what to do with the two electrical plugs that were under the plastic box.
Do I hide them in the loom as they are, connect them together, or what?
Its the only part Im unsure of.
I'm stumped as to their purpose and could do with some help...
Not sure how this forum works, and the last post on this thread was 2012. So I'm unsure if my question will be seen...Anyways I will try and attach a picture
MO
#79
#80
Junior Member
Re: Heater Valve Deleted...How To.
mmadden55
Dude. Thanks, man. This answer was all that was needed. The plugs I will graft into the loom as the car is nice so I want to keep the original gear that it came with it so it can be put back to original someday if need be.
The heater valve was bypassed for two days. Its the height of summer down here, and the heat interferred with my A/C too much. So I refitted the diverter valve but relocated it closer to the inner fender well, routing it around and under the drier (for now). It is out of the way and looks okay. I have my ice cold air back, which is great! Thanks again for your help.
Shurkey, That wasn't too hard to do was it?
Makes me wonder if you even knew...I guess
Dude. Thanks, man. This answer was all that was needed. The plugs I will graft into the loom as the car is nice so I want to keep the original gear that it came with it so it can be put back to original someday if need be.
The heater valve was bypassed for two days. Its the height of summer down here, and the heat interferred with my A/C too much. So I refitted the diverter valve but relocated it closer to the inner fender well, routing it around and under the drier (for now). It is out of the way and looks okay. I have my ice cold air back, which is great! Thanks again for your help.
Shurkey, That wasn't too hard to do was it?
Makes me wonder if you even knew...I guess
The following users liked this post:
DynoDave43 (02-21-2022)
#82
Re: Heater Valve Deleted...How To.
mmadden55
Dude. Thanks, man. This answer was all that was needed. The plugs I will graft into the loom as the car is nice so I want to keep the original gear that it came with it so it can be put back to original someday if need be.
The heater valve was bypassed for two days. Its the height of summer down here, and the heat interferred with my A/C too much. So I refitted the diverter valve but relocated it closer to the inner fender well, routing it around and under the drier (for now). It is out of the way and looks okay. I have my ice cold air back, which is great! Thanks again for your help.
Shurkey, That wasn't too hard to do was it?
Makes me wonder if you even knew...I guess
Dude. Thanks, man. This answer was all that was needed. The plugs I will graft into the loom as the car is nice so I want to keep the original gear that it came with it so it can be put back to original someday if need be.
The heater valve was bypassed for two days. Its the height of summer down here, and the heat interferred with my A/C too much. So I refitted the diverter valve but relocated it closer to the inner fender well, routing it around and under the drier (for now). It is out of the way and looks okay. I have my ice cold air back, which is great! Thanks again for your help.
Shurkey, That wasn't too hard to do was it?
Makes me wonder if you even knew...I guess
The following users liked this post:
dixiebandit69 (10-07-2023)
#83
Supreme Member
iTrader: (11)
Join Date: Aug 2013
Location: MICHIGAN
Posts: 4,643
Received 754 Likes
on
580 Posts
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Heater Valve Deleted...How To.
Dude. Thanks, man. This answer was all that was needed. The plugs I will graft into the loom as the car is nice so I want to keep the original gear that it came with it so it can be put back to original someday if need be.
The heater valve was bypassed for two days. Its the height of summer down here, and the heat interferred with my A/C too much. So I refitted the diverter valve but relocated it closer to the inner fender well, routing it around and under the drier (for now). It is out of the way and looks okay. I have my ice cold air back, which is great! Thanks again for your help.
Shurkey, That wasn't too hard to do was it?
Makes me wonder if you even knew...I guess"
#84
Junior Member
Re: Heater Valve Deleted...How To.
Hi Folks- I noticed recently the carpet was damp on the passenger side of my '87 V6 Sport Coupe. I mopped it up and went on my way, only for it to appear again, after some analysis I concluded it was engine coolant from a expired heater core. Being a Florida transplant for many decades, I had this issue before (on a Mercury) , instead of hours of disassembly/ reassemble to replace the core, I simply routed the heater hoses and bypassed the core. (Rarely miss the 2 times a year I would run the heater, and I have fully functional AC which will defog the window in a pinch) . I've been reading the thread, and can't visualize how it applies to my vehicle. (I also have a Haynes manual and of course it doesn't have a plumbing diagram) If you look at the (attached) pic of my heater plumbing, it appears the most simple way to bypass the core would be to remove the heater valve (black object w/ radiator clamps all over it) , take the hose in the foreground (its from the water pump, you can see the 90 degree bend towards the rear) and route it to the pipe to the right of the heater valve (that the heater valve is connected to now)? Am I over simplifying this ?
#85
Re: Heater Valve Deleted...How To.
A less-invasive method would be to connect the heater return hose to the outlet of the heater control valve, and then assure that the valve was disabled in a way that kept it closed. Depending on the valve, this might involve removing the vacuum hose to it; on other valves you'd need to supply constant vacuum. Valves are made "both ways", normally-open and normally-closed depending on application, and I don't know which way yours is.
Thread
Thread Starter
Forum
Replies
Last Post