Anonymous. Favourite answer. Just noticed that my Audi (53 plate A4) has developed a heating problem. I am not really sure of where to begin. Jay Motes is a writer who sold his first article in 1998. Audi a4 b7 model i changed water pump thermostat cleaned out heater matrix. They took it back and changed the water pump and the issue was resolved. Audi A4 heater problem. The hardest part was getting the pipes off as they probably haven't been removed in 10yrs so had corroded on. The Sealey VS352 Hose removal tool was a godsend. or Best Offer. Search My Stuff. I've also noticed that after a drive the coolant level will have went down in reservoir and if I open cap there's there's a sucking pressure and coolant returns to maximum level, Audi a4 b7 model i changed water pump thermostat cleaned out heater matrix. Cheers _____ B7 A4 Avant 2.0Tdi Quattro. This debris may clog the small openings in the heater matrix. Blocked heater matrix? Stuck control valve? Replace your heater hoses today and keep your car's interior nice and warm. It didn't just stop working dead. Have these been checked? £3.95 postage. flush through the matrix with the hose on and you should see lots of dirt coming out, once the water starts coming out clean, then switch the hoses around and flush it going the opposite way with water until it runs clean. Still no hot air only when i rev it. Have tried pulling back hose to/from heat exchanger to allow air out today and lifting reservoir so it's above the pipe, did eventually get some coming out but a bit sporadic and no hot air yet yet, but will try a few more times over next few days as another thread suggested. Tags: technical issues heater. i have a 1996 audi a4 heater is blowing cold air wot cud it b? THEN ITS AN AIR LOCK, LOOK FOR THE HIGHEST PIPE AND SEE IF THERE IS A BLEED VALVE, IF NOT TAKE BOTH PIPES OFF THE MATRIX FEEDS AND FLUSH OUT TO SEE IF IT IS BLOCKED, AND RECONNECT LOWEST PIPE FIRST AND FILL SYSTYM TILL WATER APPEAR FROM TOP AND … By removing each hose from the engine and flushing water into the outlet hose, water flows backward through the matrix. Could be but unlikely, check the coolant level, air locks tend to eventually end up in the tank. In the end he thought it might be electrical and said take it to Audi. A defective valve may also block the flow of coolant through the heater matrix. You may have a leak.A very common problem that occurs is the air conditioner stops producing cold air. Still no hot air only when i rev it. My Profile My Preferences My Mates. Click & Collect. If so it is not blocked. Car can idle from cold with no heat until you rev it up and down. hutacars. Home Topics Motoring & Transport Motors DIY Car Maintenance & Repair Audi A4 heater problems Notices Welcome to Boards.ie; here are some tips and tricks to help you get started. i've so far clocked up 8 hours on this (including headscratching time) thermostat checked and changed, water pump checked and changed, heater matrix flushed and reverse flushed. The location and operation of the valve will vary from model to model. A blocked heater matrix may cause the heater and defroster to stop working or to work inefficiently. Gassing Station | Audi, VW, Seat & Skoda | Top of Page | What's New | My Stuff, © 2021 Pistonheads Holdco Limited, All Rights Reserved, PistonHeads® is a registered trademark of CarGurus Ireland Limited, Pistonheads Holdco Limited, c/o Legalinx Limited, Tallis House, 2 Tallis Street, Temple, London, EC4Y 0AB, United Kingdom. Tighten up the clip again !.. Looking for a garage you can trust? The surrounding air then also cools, and in turn keeps you from melting. If the system fails to be properly pressurized, such as if there is a leak present, the air will not be able t… This is easy to fix when driving as the air con de-mists quickly, but after parking up and returning to the car an hour or so later, all is misted again- a pain in the backside when you then have to wait and demist. Yes, my A4 has got climate control, but the LCD control display still works perfectly fine. Replaced thermostat,sensor and only this week I decided to check the pump. Is this a Haynes Manual 'a bit tight' or just merely awkward? ... Heater issue A4. Golf 2013 no heat inside, blocked heater matrix, any ideas. Engine coolant may contain debris from corrosion of metal components or deteriorating gaskets and hoses. A car heater matrix, also referred to as a heater core, is a small device similar to a radiator inside the passenger cabin of a vehicle. Motes has written for numerous print and online publications including "The Dollar Stretcher" and "WV Sportsman." Don't take … I've just been done over after buying a 2004 Audi A4 Avant tdi sport from private seller. PistonHeads » Gassing Station » Other Marques » Audi, VW, Seat & Skoda. One hose carries hot engine coolant to the matrix while the other returns the coolant to the engine. Sounds a lot like a Water pump or thermostat to me. How to Replace a Toyota Previa Alternator→, How to Replace the PCV Valve on a Ford Focus→, How to Change the Heater Core in a Chevy Blazer→, How Do I Troubleshoot Karcher Pressure Washer Surging?→. ... but a much bigger job if the matrix behind the dash is the fault. 4 0. Have any of you Audi fellas had a block heater in you car. Everything else works fine, temp and such, heater core is not blocked. Max Headroom. HEATER MATRIX TO FIT AUDI A4 2000 TO 2008 AUDI RS4 AUDI S4 SEAT EXEO (Fits: Audi A4) £29.50. Hi, I've got a problem with my Audi A4 TDI Sport PS130 eng, 51 plate, about a week ago the heater has stopped getting hot only warm. Heaven at 6:30 am! K-seal and other stop leaks have been known to clog up the matrix. My 87 Toyota pickup was exhibiting signs of a blocked heater core, so I bypassed it to finish my cross country trip home. I need to pick your brains. Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing. Hot engine coolant flowing through the matrix is used to warm air for the heater and defroster. Heating Hot Air - posted in A4 (B6) 2001 - 2004: Hi guys. A heater control valve controls the flow of engine coolant through the matrix on some vehicles. Have an audi 2004 A4 1.8 quattro; has only heat when motor is above 1400 rpm, have installed new waterpump, flushed heater core ( flows good both ways), drain coolant and … The the heat will work as normal all day until I drive it hard and temp needle will start heading past 90' very quickly. HVAC Heater Hoses and Pipes Audi A4, A4 Quattro, S4 (1996-2002) HVAC Heater Hoses and Pipes. If the coolant is ok then the problem is with the hvac system. I had a similar issue on my 01 A4. Causes of Blockage. He holds a Bachelor of Arts with a double major in history and political science form Fairmont State College in Fairmont, W.V. The thermostat seems to be working and there seems to be coolant circulating through the system. I bleeded ok from engine then heater matrix still no hot air any help plz. The matrix has been flushed, coolant seems to be moving ok. The heater matrix is a small radiator which uses conductive brass or metal tubing and a fan to transfer heat from hot coolant making its way around the cooling system out into the air of the interior of the vehicle. 1999 Audi A4 heater core replacement Part 1. If they're not then its likely the heater matrix is blocked and you should do a reverse flush on the cooling system to try and clean it out. My mechanic tried a load of things, bleeding the system, checking for air locks etc. Looks like an easy fix too. I got it to give me heat when i drive, but when I idle I have no heat. Relevance. Help With Replacing the Radiator on a Ford Focus. ... Might be a blocked heater matrix. Please do at your own risk and be careful ..1 ..the metal pipes from the matrix radiator are soft aluminium and damage easy when trying to remove rubber hose and are usually very tight 2.. Be careful of hot water ...this worked for me after changing thermostat and temp sensor and still cold blowers :-) p.s the top was the only one I undid and was the tlreturn to engine ..hope this helps everyone ...I have heard stories of head cracked ..water pump gone etc.... All along was an airlock stopping hot air circulating for heating .. Hi thanks for the info ref Audi A4heater blowing cold air only, I was told could be the water pump,but I had them follow your instructions first ref air block in the system and it worked,the Heater now works as it should much appreciated. Had the thermostat replaced on my 2005 1.9TDI (manual) a week ago, then 3 days ago, having driven 6+ hours, the aircon stopped blowing out hot air. Audi A4 blowing only lukewarm air via climate control. From reading a few threads I have come to the descision that i need a new heater matrix (blocked i rekon) as I cant bare another winter with luke warm heating. Is the temp gauge getting up to 88/90 C if so them this may be a flap control motor fialor or the car compartment sensor U/S and telling the heater the car is hot enough.
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