0
2001 vw passat no heat coming out of vents got a coolant flush still no heat help?
Wiki User
∙ 14y ago
I have repaired this hard to diagnose problem by draining and refilling the cooling system with clean water, then refilling again and running the engine with clean water, then back-flushing the heater core until I had good flow again, then draining the water from the cooling system and refilling with new coolant. Heat works again. The alternative is a $300 heater core and 6.6 hours of labor. At a shop this averages about $900 for the job. Other issues that can also affect this problem are: Low coolant? Bad thermostat? I had the same problem, I had hot water flowing through the heater core, blower blowing cold air. I found that the glove compartment was keeping the air controller from moving to open the air controller flap. After I removed the glove compartment it started working, then I put it back together and it still works.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What Is the purpose of a coolant flush with new radiator its?
You still need to flush the engine block and heater core.
01 Malibu 31 replaced thermostat no leaks anywhere except out of overflow did compression test on all cylinders all good and no oil in coolant and no coolant in oil but still overheats then cools?
radiator core could be plugged, cap on the coolant reservoir is not maintaining proper pressure. is water pump working properly!! I would flush system and see if this works, buy a good radiator flush at any auto parts place. you can flush the radiator by adding flush to coolant tank, then put a garden hose in tank and back flush it. as long as you have a new thermostat in, you do not need to take it out!! flush until the radiator is clear. when done add new coolant. I did this to mine when changing intake manifold gasket. and it does not over heat it is fine!! HOPE THIS HELPS YA OUT.
What if you did that and it still won't start on the passat?
Did what?
What could cause the temperature warning light to come on after about 15 seconds from starting on an A4 2.6?
Low coolant level or faulty coolant level senser. Did a radiator flush and replaced water bottle with sensor... still nothing.
What is the Life expactancy 2002 passat?
My 1999 Passat has 225000 miles and still going strong
You have replaced the thermostat in a 1994 Mazda B3000 and the engine temp gauge still runs to the hot side Do you need to bleed air out of the coolant line?
flush the radiator
What is crc copper block weld?
It is liquid glass and copper filaments (for reinforcement). I used it in my 1998 Nissan sentra that had a blown head gasket and after 25k mi it still runs like a champ. Be sure to flush radiator and change oil before using. Flush coolant really well.
What do i do if my 95 cadillac sedan deville is leaking coolant and the heater is only blowing cold air and the thermostat has already been changed and still no heat?
If it is leaking coolant. And you changed the thermostat. I would then move to this section. Flush the radiator and the heater core. This can be done at a certified shop with a reliable mechanic.
2000 Chevy Malibu i raplaced the head gasket and the thermostat still heats up?
flush the system and change thermostat,this should fix problem. I flushed mine and i changed coolant and thermostat,it is now fine.
How do you clean red and green antifreeze?
If you mean CLEAN antifreeze, the answer is no. Hydrometers are used to check if still OK. Also a good idea to flush radiator and add new coolant twice a year, in spring and fall.
When a 91 lumina with 3.1 has coolant in oil how do you tell if it is head gasket or intake?
If the engine still runs check to see if there are exhaust gasses coming out of the radiator or coolant coming out of the exhaust pipe That's a bad head gasketBetter yet Do them both Itll give you peace of mind knowing neither are bad when you are done
How do you flush the radiator in a 1991 Plymouth Voyager?
Dont try to flush the radiator... when you drain it and try to flush it, what you will be doing is breaking up all the old gunk in the radiator, by breaking it up, you will have no clue if its completely clean or not, so if the gunk is still floating around, it could go threw the engine and clog up the engine, making it over heat and really mess things up... now if you want to just change the coolant, the drain plugs are on the botton corners of the radiator, theres 1 or 2 drain plugs... i forgot how many, but it would be alot safer to change coolant, then to try to flush the radiator.
