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Gurgling sound in heater and heater air seems too hot. Fluid level good in reservour. Temp gage reading normal.

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  • Jeep Master
  • 22,326 Answers

Needs bleeding from the sound of it ? if not the air noise means only one thing iam afraid ? HEAD GASKET .

Posted on Dec 10, 2012

  • Bill Parsons Dec 10, 2012

    Where do you bleed it? (No sign of fluid in engine oil or white exhaust)

  • Colin Stickland
    Colin Stickland Dec 12, 2012

    pull the top heater hose off a bit ,Now depending on the type of gasket failure and yes their is a difference so what you read on so called know it all web sites and bar room mechanics ,it all depends on how the gasket is failing ,you can have a oil leak down the side of the block to what you describe here as a air sound in the system ,Also the plastic impeller onn the water pump can come loose on the metal drive shaft causing similar problems so please ask a local mechanic to have a look and kick the wheel curse at it and hopefully give you a better idea as to whats wrong than i can from afar



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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 93 Answers

SOURCE: can hear gurgling water in heater core when I rev

you have an air lock in cooling system try bleeding it if it still does it could be exhaust gases in cooling system caused by a leaking head gasket have it checked at garage who have a chemical tester or sniff tester

Posted on Jan 21, 2010

  • 1 Answer

SOURCE: Heater blows cold air

If the "Heater In Hose" gets hot, and the "Heater Out Hose" does not get hot, than either the Control Valve is sticking closed, or your heater core is plugged up with ****!

Have you used "Barrs Leak" or a simular product for a radiator leak? That will sometimes clog the heater core.

I have a 1993 Grand Cherokee, which "Normally" throws very hot air out of the heater, but lately sometimes it only throws warm air, till I make my first stop, than it gets hot.....all because the heat control valve is hanging up.

Low water in the radiator will also cause a heater to not work.....if the water level is too low to circulate to the heater.


Posted on Feb 18, 2009

Tech jk
  • 102 Answers

SOURCE: my heater stoped blowing hot air.antifreeze level

If the blower is blowing air just fine, but you cannot control the temperature, you need to listen to air coming from the vents while turning the temperature from hot to cold. If you do n ot hear any change in airflow, then you may a temperature door in the dash broken. this is becoming a common problem on the Equinox and Pontiac Torrent,

Tech JK

Posted on Oct 15, 2009

  • 2 Answers

SOURCE: heater blowing cold air

My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!

Posted on Oct 16, 2009

  • 5158 Answers

SOURCE: 2000 Xterra intermentantly overheats

sounds more like the thermostat may be failing. generally a water pump starts leaking out of the "weep" hole in the casting before it quits. just look at the front of the water pump for a greenish streak or an obvious leak.
if you also suspect you heater core may be getting plugged now would be a good time to back flush it to get rid of some of the gunk.

Posted on Oct 22, 2009

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My heater works fine on a hot day but as soon as it gets cold it refuses to kick in.Air cond and all air vents work fine and all flaps seem to open and shut

Scott, you do not say if your heat gage gets to normal operating temp., First thing to check is to ensure coolant level is right up.
Possible bad thermostat.

Mar 13, 2016 | Cars & Trucks

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2005 Lincoln Town Car has a gurgling noise under dash when car is idling & when you shut it off. Form dealer told me this is normal. I don't believe it is.

Sometimes a VERY slight hiss is audible after using the ac. But a gurgling is not normal and usually a sign that there is air in the cooling system. The noise is the air "gurgling" through the heater core. I'd almost bet money that's the problem.

Mar 06, 2011 | Ford Lincoln Continental Cars & Trucks

1 Answer

96 Century won't circulate heat without raising rpms then stops again at idle. Internal gage show overheating before raising the rpms then after drops to normal or below afterward. V6 with the intake...

I will start with the basics here first, i.e. Your cooling system needs to be properly filled.
A low coolant level will give you peaks and valleys in temp readings because the sending unit is not in constant contact with the coolant; it is just splashing on it (like dipping your finger in and out of a cup of hot coffee). For best results the sending unit needs to be in constant/direct contact with the coolant to measure its temp.
To fill your system:
Start with a cool engine and have everything you may need ready i.e. funnel, coolant, helper to rev engine.
Try revving the engine up to 2000 RPM's while topping off the radiator, then put radiator cap on while still revving engine. Return to idle.
Make sure your overflow tank is not too low either.

If that is not your problem then let's look deeper.

What color is your anti freeze? Factory "orange" is not good in my opinion.
Orange coolant can gel-up and clog your heater core.
You may need to purchase a "cooling system flushing kit" or pay to have it flushed out.

Do not reuse orange coolant. Revamp it with either the old green stuff or ask your parts man what's best.

This happened to my 1996 s10 blazer; turned out to be a restricted heater core.
My heater made a gurgling sound at certain rpm's, and did not heat well at all.

I flushed it out (the whole cooling system) following the instructions on a acid based flush kit and refilled it with the green coolant.
After the flush the gurgling sound was gone and I could not believe how much it improved the whole system; especially how hot the heater blew.

My blazer came with the orange coolant from the factory.
I was told if your level gets low with orange, it will thicken up.

I would also check for any kinks in your heater hoses just as another possibility.

Good luck!

Jan 26, 2011 | 1996 Buick Century

1 Answer

The heater wont get hot

if temp gage is at normal, you have air trapped in the system. If gage reading is low, replace thermostat.

Dec 09, 2010 | 2000 Ford Taurus

2 Answers

Heater in 02 Dodge 1500 truck

once the truck is fully warmed up, feel the 2 heater hoses going through the firewall in the engine compartment. they should be hot to the touch. if they are, then the problem is most likely the heater controls, such as the temp. switch on the dash or the blend door itself inside the dash. if they are cool, check that the coolant is completely full. just because the temp gauge reads normal doesn't mean there's enough coolant in the system to fill the heater core. remove the radiator cap once cooled and top off if needed. if it is, or was, low, its possible to get air the the cooling system and block flow of coolant to heater core.

Feb 18, 2010 | 2004 Dodge Ram 1500

1 Answer

I have a 97 tahoe and it is no longer blowing hot air. A/c works and it blows air but it wont get hot. Before the heater went out it use to make a gurgling sound from heater core.

Hello Daisy.
The gurgling sound may have been air mixed in with the coolant/Antifreeze.
Have you checked the level of your coolant?
Don't trust the reservoir level. Open the radiator cap itself when the vehicle is cold and check the level there.
If the level is low, top it up and try it. If it is low then it would be a good idea to check the cooling system for leaks.
Hope it all goes well for you.

Nov 22, 2009 | 1997 Chevrolet Tahoe

2 Answers

Temperature gauge fluctuates and the heater blows cold air

Definitely check your fluid level in your radiator. Top it off all the way. I've seen that happen multiple times on cars that were low on anti-freeze. If that doesn't work try replacing your thermostat. It's cheap and the easiest place to start if topping off the fluid doesn't get you fixed up.

Oct 16, 2009 | 1997 Chevrolet Camaro

1 Answer

Warm heat not hot

Check antifreeze level, if it is low coolant may not flow through heater core. If coolant level is ok feel the heater hose with engine running at normal operating temp and heat on high, if one hose is much cooler than the other you have a bad heat control valve or a pluged heater core.

Oct 15, 2009 | Pontiac Grand Am Cars & Trucks

1 Answer

My 1995 chevy van blows out cold air when i have the heat on

The hoses to the heater core may have been re-plumbed to by-pass the heater core (a temporary fix to a leaking heater core) verify that hoses are routed properly. If they are, check coolant fluid level....when it is gone...the heater will not blow hot, and you will likely burn up the engine (if coolant is gone...temp gage may not register "hot" because there is not fluid for the temp sensor to measure. may have a broken/cracked vacuum line (the valves for switching where the air gets directed are typically vacuum controlled) Hope this helps.

Oct 12, 2009 | Chevrolet Astro Cars & Trucks

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