Question about 1994 Oldsmobile Cutlass Supreme

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Bypass or replace heater core? I live in Florida and really do not need the heat right now and I do not have the money to pay someone to fix it. I will have to do it myself.

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Get a 5/8 to 3/4 inch hose adapter and disconnect the hoses from the heater core. Attach each hose in to that adapter to bypass the core. Generally use brass fittings found selling at auto parts store to make an adapter

Posted on Jul 05, 2010

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Bypass it with rubber hose

Posted on Jul 05, 2010

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Blend door actuator or can I bypass rear heat?


Bypass the rear heater core take both hoses off the core and go to hardware store ask for apex tubing an conect hoses to it n put 2 clamps on each side u will have to guess the size or cut a piece of it n take it with u to get the size tubing u need that will kill all heet to back not the front

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Hi Mary, I'm glad to help! Mary, this is a common problem that occurs after flushing the coolant system. The heater core was corroded and the cleaner removed the rust from it and now its leaking and that why you smell coolant with the heater on. Unfortunately the complete dash will have to be removed to fix this problem. CAUTION: Do not put STOP-LEAK in the system, this only causes engine overheating problem. Instead, if you don't have the money to repair it right now, then you can have someone BY-PASS the heater core under the hood. This will give you time to save up for the proper repair. CAUTION: Do Not continue to drive it with that way because you are losing coolant everytime you drive the vehicle and will cause overheating and damage to your engine and that will be really costly. Hope this helps and have an awesome day Mary. To bad you don't live in the St Louis Mo area.

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2002 Subaru Forrester no water in radiator and passenger side floor wet


Donna, your mechanic is both right and wrong. The heater for pretty much all cars comes from the hot coolant running through a heat exchanger (core) under your dash. This is the same coolant that runs through your radiator. Yours sprung a leak in the heater core under the dash - ergo, coolant in the pax floor and none in your radiator. Using a hose to bypass the heater core is a cheap way to avoid a very expensive repair. The downside is that you will have no heat for the car or to blow warm air on the windshield to remove "fog" - a safety issue. This is also a dumb idea if you live where winters are frigid. In summertime, what your mechanic suggested is a reasonable, temporary fix. In the wintertime, not so much.

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Thermostat and engine heat seem fine, seems that heat knob, gears and cable are all working fine, but have practically no heat from heater.....96 Dodge Ram 1500 4 x 4. No problems with ducts switching...


Hello. First, does the fan speed work correctly? When you put it in the high possition does the air come out faster?, if so, raise the hood, look back on the firewall, ( behind the motor ), and locate 2 hoses that are about 1 1/4 inch in diameter that both hook up to pipes on the firewall. This is your inlet, and outlet for your heater core. I suspect you will find that these hoses have been joined together to bypass the heater core. Often when a heater core is leaking people don't have the money to replace the heater core, they generally cost $300 to $400 and sometimes more, then you have to pay the labor, in some cases, to remove about half of the dash to get to the heater core. This repair can be expensive indeed, so, often people just bypass the heater core by joining the inlet and outlet hoses of the core directly together skipping the core altogether.
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My dodge dakota doesn't blow hot air at all. i have replaced the thermostat, water pump, fan, and fan clutch. i had problems with it over heating i've fixed that problem but now living in CO. I don't have...


May be a plugged heater core. OR Someone removed your thermostat to cure you overheating problem. Remove heater hoses , (in and out hoses) leading to and from heater core and try to blow through it. DO NOT clean out using more than 16 p.s.i. as this will burst you heater core.Also check to be sure heater flap is opering to let heated air into cab.

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1 Answer

The right floor board of my car is wet. and it has a stinky odor!


Probably a stinky but almost kinda sweet odor.... right?
That's antifreeze leaking from your heater core. Sometimes leaving the heater off will stop the leak temporarily, but sometimes in November leaving the heater off is not an option, unless you live in Florida. The correct procedure is to replace the core which is a very involved job. The last one I had done required removal of the dash and cost around $500.
You can bypass the heater under the hood but that is only a temporary cure and will disable your heater and then you have two things to fix later, the core and undoing the bypass.

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2 Answers

My heater core went out can you tell me how to put one in because i really don't have the money to pay someone to do the work for me?


Heater cores are nasty and its' a ugly all day job. You have to take all of your dash board out to get to the core under the dash globe box in the firewall. Depends where you live but you can bypass a heater core by connecting the heater hoses together. Its' a quick fix and you will not have any heat at all but it will stop leaking. You have to get a shop repair manual for your ford then read up on the job. If you can tackle the job yourself you will save hundreds in labor alone. Write me back and rate me please.

Oct 16, 2009 | 1997 Ford Expedition

1 Answer

Heateer core leak


yes you can take the 2 hoses going to the heater core and join the 2 together under the hood so that coolant flows thru the hoses but not thru the heater core

Apr 16, 2009 | 2001 Pontiac Montana

2 Answers

Pontiac grand am 1994 water comes out overflow


First question: why was the heater core replaced. Was it leaking water inside the car? Or was it replaced due to no heat inside the car. If it was replaced due to no heat inside the car, the shop you had taken it to shouldn't have replaced the heater core until they conducted tests of why there was no heat even if the customer insists on replacing the heater core. The reason why I'm asking is there's a possibility of the head gasket was leaking causing the poor circulation of the water to the heater core. If so, you may have replaced the heater core for no reason and most likely cost you a bunch of money. I live by this rule in our shop: DON'T JUST THROW PARTS AT THE CAR! You 'll end up spending way more money than you needed to.

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Aside from flushing the radiator and heater core andreplacing your hoses, did you happen to replace your thermostat. Sounds to me like that's your problem if everything else seems to be in order. If you change the thermostat and still have no heat, you might check your vacuum lines running to the back of your heater controls inside your dash. That's really the only other thing that I believe could be causing your lack of heat.

Hope this helps! Have a great day and try to stay warm!

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