1.8L Overheating :(
Thread Starter
AudiWorld Newcomer
Joined: Dec 2009
Posts: 9
Likes: 0
1.8L Overheating :(
Hi All,
I have a 98 A4 Quattro 1.8L with a BIG overheating problem. Yesterday I was driving and all of a sudden the car started to overheat. I immediately turned on the heat and the cars temp didn't increase as fast. I pulled over, checked coolant level(good), checked oil(no coolant mixture or anything suspicious with the oil), no coolant smell out of the exhaust, no leaks. Well I continue to limp the car home and I lose ALL heat inside the cabin. So the car is overheating very rapidly, and no heat in the cabin. After I lost all heat I rechecked everything I mentioned above including the passenger side floor for coolant and there was nothing(oil, coolant, exhaust, etc) and all was the same. Any thoughts on this overheating situation? I was told it may be a thermostat. ?? I should also mention that I checked the waterpump pulley for play and there was none. And again, no leaks under car.
Any insight as to what this could be will be extremelllyyy appreciated.
Thanks so much.
Jon
I have a 98 A4 Quattro 1.8L with a BIG overheating problem. Yesterday I was driving and all of a sudden the car started to overheat. I immediately turned on the heat and the cars temp didn't increase as fast. I pulled over, checked coolant level(good), checked oil(no coolant mixture or anything suspicious with the oil), no coolant smell out of the exhaust, no leaks. Well I continue to limp the car home and I lose ALL heat inside the cabin. So the car is overheating very rapidly, and no heat in the cabin. After I lost all heat I rechecked everything I mentioned above including the passenger side floor for coolant and there was nothing(oil, coolant, exhaust, etc) and all was the same. Any thoughts on this overheating situation? I was told it may be a thermostat. ?? I should also mention that I checked the waterpump pulley for play and there was none. And again, no leaks under car.
Any insight as to what this could be will be extremelllyyy appreciated.
Thanks so much.
Jon
AudiWorld Super User
Joined: May 2002
Posts: 5,138
Likes: 4
From: Redmond WA
Hi All,
I have a 98 A4 Quattro 1.8L with a BIG overheating problem. Yesterday I was driving and all of a sudden the car started to overheat. I immediately turned on the heat and the cars temp didn't increase as fast. I pulled over, checked coolant level(good), checked oil(no coolant mixture or anything suspicious with the oil), no coolant smell out of the exhaust, no leaks. Well I continue to limp the car home and I lose ALL heat inside the cabin. So the car is overheating very rapidly, and no heat in the cabin. After I lost all heat I rechecked everything I mentioned above including the passenger side floor for coolant and there was nothing(oil, coolant, exhaust, etc) and all was the same. Any thoughts on this overheating situation? I was told it may be a thermostat. ?? I should also mention that I checked the waterpump pulley for play and there was none. And again, no leaks under car.
Any insight as to what this could be will be extremelllyyy appreciated.
Thanks so much.
Jon
I have a 98 A4 Quattro 1.8L with a BIG overheating problem. Yesterday I was driving and all of a sudden the car started to overheat. I immediately turned on the heat and the cars temp didn't increase as fast. I pulled over, checked coolant level(good), checked oil(no coolant mixture or anything suspicious with the oil), no coolant smell out of the exhaust, no leaks. Well I continue to limp the car home and I lose ALL heat inside the cabin. So the car is overheating very rapidly, and no heat in the cabin. After I lost all heat I rechecked everything I mentioned above including the passenger side floor for coolant and there was nothing(oil, coolant, exhaust, etc) and all was the same. Any thoughts on this overheating situation? I was told it may be a thermostat. ?? I should also mention that I checked the waterpump pulley for play and there was none. And again, no leaks under car.
Any insight as to what this could be will be extremelllyyy appreciated.
Thanks so much.
Jon
Usually the Audi OEM thermostats fail open though so this would have to be an aftermarket one.
AudiWorld Newcomer
Joined: Aug 2009
Posts: 1
Likes: 0
I just had a similar issue with my 97 1.8 A4tq. After replacing the entire cooling system, much hair pulling and wall punching I found the system, especially after a short drive the temp would max out, the coolant would disapear. Yep, Disapear. It seems the cooling system was over pressurizing due to a leaking head gasket. The number 2 and 3 cylinder "once hot" was pumping hot gas out and sucking coolant into the cylinders. I found this by pulling the plugs imeadiately after a drive.
This was especially perplexing since performing a leakdown check of each cylinder lead to nothing irregular.
Bizzare issue, but definateley worth checking out. I was able to replace the head gasket in just a few hours. Luckily the head didint warp or crack.
Problem sloved the car now runs great!
If you need any assistance please feel free to hit me up.
This was especially perplexing since performing a leakdown check of each cylinder lead to nothing irregular.
Bizzare issue, but definateley worth checking out. I was able to replace the head gasket in just a few hours. Luckily the head didint warp or crack.
Problem sloved the car now runs great!
If you need any assistance please feel free to hit me up.
Thread Starter
AudiWorld Newcomer
Joined: Dec 2009
Posts: 9
Likes: 0
Well Hi all,
Bad nes. I replaced the thermostat and the problem still exists.
Again, the cabins 'heat' is cold, and the temp of the engine increases as normal(upon startup) and just never stops at half like it used to. It just keeps going untill overheat!
Any help is much appreciated.
Jon
Bad nes. I replaced the thermostat and the problem still exists.
Again, the cabins 'heat' is cold, and the temp of the engine increases as normal(upon startup) and just never stops at half like it used to. It just keeps going untill overheat!Any help is much appreciated.
Jon
Thread Starter
AudiWorld Newcomer
Joined: Dec 2009
Posts: 9
Likes: 0
Well Hi all,
Bad news. I replaced the thermostat and the problem still exists. Again, the cabins 'heat' is cold, and the temp of the engine increases as normal(upon startup) and just never stops at half like it used to. It just keeps going untill overheat!
Any help is much appreciated.
Jon
Bad news. I replaced the thermostat and the problem still exists. Again, the cabins 'heat' is cold, and the temp of the engine increases as normal(upon startup) and just never stops at half like it used to. It just keeps going untill overheat!
Any help is much appreciated.
Jon
AudiWorld Super User
Joined: May 2002
Posts: 5,138
Likes: 4
From: Redmond WA
Well Hi all,
Bad news. I replaced the thermostat and the problem still exists. Again, the cabins 'heat' is cold, and the temp of the engine increases as normal(upon startup) and just never stops at half like it used to. It just keeps going untill overheat!
Any help is much appreciated.
Jon
Bad news. I replaced the thermostat and the problem still exists. Again, the cabins 'heat' is cold, and the temp of the engine increases as normal(upon startup) and just never stops at half like it used to. It just keeps going untill overheat!
Any help is much appreciated.
Jon
If not you have a circulation problem as the coolant is not moving thru the system.
That's typically something like a broken water pump impeller or a blockage somewhere like the radiator. If someone put the wrong type of coolant in there it will sludge up.
Trending Topics
Thread Starter
AudiWorld Newcomer
Joined: Dec 2009
Posts: 9
Likes: 0
Like CH46-E said above, if you are losing coolant it's possibly the head gasket. Blown head gaskets are not common on our cars although it does happen.
If not you have a circulation problem as the coolant is not moving thru the system.
That's typically something like a broken water pump impeller or a blockage somewhere like the radiator. If someone put the wrong type of coolant in there it will sludge up.
If not you have a circulation problem as the coolant is not moving thru the system.
That's typically something like a broken water pump impeller or a blockage somewhere like the radiator. If someone put the wrong type of coolant in there it will sludge up.
It's interesting you say that. I had an oil change done about a week and a half ago at a Meineke and they 'topped off all fluids'. Is it possible that they put in the wrong coolant? If so, how can I tell and what do I do in that situation? if I take it to a shop and have them do a coolant flush, will that potentially solve the problem?
Thanks again for your help!!
AudiWorld Stories
Bringing Audi to Life for Audi Fans
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
9 Audi Designs That Aged Like Fine Wine
Verdad Gallardo
2026 Audi Q5 Buyer's Guide (Every Model Explained)
Brett Foote
Ranking Every Current Audi 'S' Model From Worst to First!
Joe Kucinski
10 Best Audis That are FINALLY LEGAL to Import to the U.S.!
Joe Kucinski
AudiWorld Super User
Joined: May 2002
Posts: 5,138
Likes: 4
From: Redmond WA
It's interesting you say that. I had an oil change done about a week and a half ago at a Meineke and they 'topped off all fluids'. Is it possible that they put in the wrong coolant? If so, how can I tell and what do I do in that situation? if I take it to a shop and have them do a coolant flush, will that potentially solve the problem?
Thanks again for your help!!
Thanks again for your help!!
Unless they added a lot I can't see this happening that quickly.
Thread
Thread Starter
Forum
Replies
Last Post
LordKarnage17
A4 (B6 Platform) Discussion
10
Jan 10, 2018 05:30 PM
popdemonic
Audi Original "S" Cars
10
Apr 12, 2008 02:07 PM
I seem to be slowly losing coolant, and I notice a burning smell after driving...smells like coolant
nvr_follow
A4 (B6 Platform) Discussion
23
Feb 21, 2008 06:12 PM
sidespar
Audi 90 / 80 / Coupe quattro / Cabriolet
2
Feb 2, 2005 01:55 PM
