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There is no sign of loose hoses temp does not over heat

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No heat drivers side heat ok on passenger side


First, does the AC work on the driver's side? If not that is usually a sign of the vacuum hose on the vacuum controlled vents on the driver's side came loose. Try to get under the dash, listen for a vac leak feel around or look if poss for one. When you find it, follow it back to the vent nearest the loose hose and feel for the vacuum connection. PS happens all the time

Nov 21, 2015 | 2003 Honda CR-V

1 Answer

2003 toyota highlander blower


try locating the physical tap that connects your heater hoses to the interior of the car. note what position that tap is in before and after you turn up the temp dial inside. whatever connects the dial to the tap may be damaged.

if the tap itself turns then the heater side of the blower may be blocked.

Feb 14, 2014 | Cars & Trucks

2 Answers

Engine overheat and no heat


Maybe your radiator is clogged.

Mar 12, 2017 | 2001 Nissan Sentra

1 Answer

No heat


i`m guessing the blower motor is working.check coolant level then run car until hot,that is the upper rad hose is hot to the touch.then touch the heater hoses they should feel the same in temp from one to the other.if not then the heater core is plugged and will have to be flushed.you can clamp the hoses with something so you won`t loose very much coolant.then remove the hoses and using a garden hose run water one way then the other way.if this doesn`t work you can try and drain the heater core and fill it with clr and let it sit for a while(about 30 to 45 minutes)then flush the heater out with water.then hook up the heater hoses and run until hot,if it works then you will have heat and unplugged the heater.if both hoses are the same temp then replace the thermostat.

Dec 10, 2011 | 1993 Plymouth Voyager

1 Answer

2006 Forenza. Over heating problem. Coolant in resivoir goes down. It does maintain pressure. No leaks. Both fans functional at operating temp. Fuses appear to be OK. At operating temp, lower hose is cool....


take the overflow hose loose from the resovoir and stick it down in pop bottle with water about half full
and run vehicle if you see bubbles in it you have a bad head gasket.

May 29, 2011 | 2006 Suzuki Forenza

1 Answer

The heat did not work when i got my 98 ford taurus i changed the thermastat, and theres no water in my floor so what could it be?


Heater core could have build up in it and have a restricted flow....thus your heater would not be blowing as hot of air. You should do a pressure test on your cooling system to see if you are loosing any coolant...and where (if your water pump is loosing then you would not be getting the proper circulation).

You can also do a check by starting the engine cold. Grab the upper hose and you should not feel any coolant flowing through it. When the engine begins to get uo to temp the properly working thermostat will open and you will begin to fell coolant flow through the upper hose. When the engine is up to temp your upper and lower hoses should feel hot.

Dec 29, 2009 | 1995 Ford Escort

3 Answers

2003 Dodge Ram Van 1500 *** NO HEAT **


Do you have enough antifeeze in your cooling system. If not fill & check again for heat. You may have a blockage. If so remove the in & out hoses to the heater core on firewall. Be careful not to damage core. Use a garden hose to flush the core one side to the other untill running clear water. put one hose on tight & clamp, put other on loose. Have someone start engine & slowly remove loose hose to let air escape. when fluid appears put hose on & tighten. Refill rad & resevoir. Heat engine up & check for heat. Also heat cable may be off under dash.

Sep 12, 2009 | Dodge Ram 1500 Cars & Trucks

1 Answer

No heat, replaced thermostat,water pump,heater core, all hose ok


When you put your hand on the inlet & outlet heater hoses are they both hot to the touch ? I mean 'ouch' hot, not just warm.
You might have an 'air lock' in the system if they are only warm, or temp feels quite different between them.
If possible, leave the return heater hose loose, start engine, let it warm up then bleed the system using return hose for a minute or so.
KEEP rad full while bleeding.
tighten hose, then watch the radiator fill hole for signs of air bubbles or frothing coming up thru antifreeze.
If either are present, you may have compression leak !
Another check for compression leak, is put rad cap on, drive around the block twice, let vehicle cool down then slowly remove rad cap & smell at filler hole as cap comes off.
compression leak will smell strong & burn eyes.. & we both know there is only one cure for that situation !!

Mar 02, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

My heat blows hot for about 5secs then grt cold again whats that


If there is no sign of coolant loss (air pocket in heater core),then check for plugged heater core. Both hoses should be very close to same temp with engine at operating temperature with heater fan on high setting.If the return hose is alot colder, then coolant flow is restricted.

Jan 31, 2009 | 1999 Ford Expedition

3 Answers

BLOWS HOT AIR ALL THE TIME,AC WORKING,TURN TEMP CONTROL ANY POSTION SAME TEMP


I've had 2 Astros. A 1993 and a 1994, and had a problem with the heat/AC on both of them. They blew only air through the defroster no matter where I set the control, heater, A/C, floor or vent.

Both times the problem was with the VACUUM hoses in the engine compartment. The hoses had become dry, brittle and then cracked. The hoses are black tubes about the size of a drinking straw, and about 12" to 14" in length. Look for hoses that are hanging loose, they usually break off from junctions where 2 or 3 lines come together.

Aug 07, 2008 | 1994 Chevrolet Astro

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