Having problems with your 1998 Cadillac DeVille ?

Air condition cold wile idle warm when driving

Posted / edited by AnonymousUser on : 15-01-2018

Answers :

Usually a sign of low freon or a restriction in the flow of freon in the system.
Repair Help & Product Troubleshooting for 1998 Cadillac DeVille

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Air condition cold wile idle warm when driving


Usually a sign of low freon or a restriction in the flow of freon in the system. ... 1998 Cadillac DeVille

Air Conditioning My 2001 deVille air conditioning runs cold on the passenger side and rear seat systems, but is warm most of the time on the drivers side. When it is very hot outside the whole system will occasionally go warm, but cycles back cold without much change in driving conditions. I have checked the cooling system fluid levels and topped it off with DexCool. That didn't seem to change anything. I didn't think it would because the engine temp was pretty steady before. I don't think its a


Try changing the lower temp sensor in the air duct on the drivers side. I bought one and never replaced it. before the part arrived I took the lower sensor out and taped it up and put it back under the dash... not in the air duct housing were it bel ... 2001 Cadillac DeVille

When driving, heater blows warm air. When idling, cold air.


It sounds to me like you have a plugged heater core, or one that is beginning to plug. With the engine running, carefully feel the two hoses that lead from the engine into the heater core in the firewall. If one of those hoses is colder than the ot ... 2001 Mazda MPV

1988 Nissan Truck 4 cyl 2WD - Extremely high idle speed (4k rpm plus) in cold weather. After engine warms up idle drops to about 2500 rpm. The problem isn't nearly as bad in hot weather - will idle down to around 1500 rpm. An air-conditioning mechanic said it needs a new cold idle solenoid. Parts people I've talked to either don't know what that is or say it's no longer available. Anyone know how to fix this idle problem?


... 1995 Nissan Pickup

2000 VW Beetle 2.0L the air conditioner was blowing warm air, the shop replaced the expansion value, evacuated and filled with freon. the air conditioner blows cold while driving but warms up while idleing. the evaporator fan works. should I replace the dryer?


I would check to see if the radiator is plugged with dirt or leaves. At idle the fan won't pull as much air as air at 60 mph. If the radiator is dirty it will cause this. ... 2000 Volkswagen Beetle

When cold start no heat then while driving, gauge tops out then drops, but blows cold. When raise RPMs it drops down to normal, then repeats. Once it warms up, it's will blow warm shortly then back cold again. Top heater hose collapses at high rpms. Car over heats, prior to letting air out through the needle valve on stand pipe. Then at idle it seems to settle down. 1996 V-6 Buick Century Thanks in advance for any info you can give.


Would change top hose plus make sure there is a thermostat fitted ... 1996 Buick Century

Cold temp light on and no heat (lukewarm) while driving. Heater works after idling for few minutes and cold temp light on dashboard goes out. When start driving again, lukewarm air from vents instead of warm and cold temp light comes back on. Radiator is full and I filled overflow from "low" to full and still happens. Fan works fine on all settings.


Could be thermostat needs to be replaced. ... 2008 Hyundai Accent 1.6

I have a 1988 mk 2 golf when i start the engine the heater warms up as normal but when the engine warms up the heater starts blowing cold air out. also now that the cold weather has started after driving about 2 miles the engine starts reving at about 2000 rpm but if i stop and let it idle it goes back to normal after a few minutes could this be related to the first problem?


Sounds like the thermostat stickng as when engine gets cold the choke will start workin again, causing the over reving or your electric fan is on all the time "over cooling" the engine ... 1988 Volkswagen Golf

Defroster and heater blow cold air when idling and warm, not hot, when driving. ac does not blow as cold as it should. Temperature, not air volume is the issue.


Sounds like your thermostat needs replaced. There about 2 to 7 dollars. And replace the gasket too! Worst case scenario your water pump need replaced. I would try the therostat first!\015\012Good Luck! ... 1997 Dodge Grand Caravan

I have a 2001 dodge stratus and the heater only blowed cold aire now we changed the thermostat and it blows warm air when idling but when driving still blows cold need some help please


Where did you buy your thermostat? if you bought a fail-safe style thermostat it could have been no good before you even put it in. also is your tempeture gauge coming up to operating temp?? if it isnt your thermostat may be stuck in the open positi ... 2001 Dodge Stratus

I have a 2002 Lincoln Ls, when idling in the driveway the A/C blows cold air, but as soon as I start driving the air warms up. It's driving me crazy an assistance would help


You can only diagnose those issues with a scanner and a trouble chart. Very high tech vehicle and all electronic ... 2004 Lincoln LS

Hello, Replaced the A/C compressor, expansion valve and dryer. Flushed entire system, vacuumed the air out and filled with oil and 45 bmi of refrigerant. Car blows cold when driving, but warms up at idle or stop. I hit the accelerator to bring up the RPM for a min, then the fan kicked on and started blowing cold again. What do you think I should look into? Im thinking some kind of sensor that turns the fan on to send air to the condenser. Oh it is a 2002 VW Beetle. Thank you, Je


... Volkswagen Beetle

1987 mercury cougar 5.0. When the engine is started cold, it stalls after 30 seconds. To keep it running, you have to rev the engine until it is warmed up. While reving the engine, it feels like it misses and it backfires a bit. Once the engine is fully warmed up, it idles and drives fine. The air charge temp sensor, engine coolant temp sensor, MAP sensor, and idle speed control motor have all been replaced within the last 2 weeks and I still have this problem. Could the problem be the EGR valve


Hi,\012\012plug the EGR line and see how it acts. better yet put a ball bearing in that line and reconnect it to the EGR and see if it goes away. definate vacuum issue somewhere. tranny modulator, check every line coming off the firewall manif ... 1987 Mercury Cougar

I have an issue with my m35. The heat was blowing warm air while driving but when idleing it would blow cold. I had the cooling system flushed and now it only will blow cold. Someone told me that the thermostat may be bad but the car regulates a proper temp while driving without overheating. If in fact it is a thermostat are there any special thing needed to change one. Like gaskets, adapters or such things? And where is it located on my car?


Thermo stat is a possibility but a blockage is also somewhat feasable.\015\012\015\012Ok, thermostat first:\015\012\015\012Location - follow the top radiator to the engine, at where the hose meets the engine that is the thermo ... Infiniti M35

I have a 2002 Acura RSX that has AC Problem. Blows very cold air, but not all the time. As long as RPM is running at drive speeds, I have cold air. However, at stop lights the air temp goes warm. If I accelerate, I get nice cold air again. The other thing I note is that it may be blowing perfectly fine cold air as I drive a half hour or hour down the interstate. All of a sudden, air gets warm. I turn it off for 15 minutes, turn back on, air is cold again. Any suggestions???


I have a 2002 rsx i have the same problem it works fine when i driving but when i stop blows hot air if i keep my foot on the gas \015\012it will blow cold but when its on ilde its hot air i recharge it 3 times \015\012at the shop and it ... 2002 Acura RSX

My 2003 dodge 2500 has air condition issues.at idle it blows cold air as long as it sitting still.as soon as I start down the road and drive a few miles the air stops blowing cold.HELP


On a vehicle 11 years old, I would sayput gauges on it & then leak test it.Most likely has a leak & is low on refrigerant& when you move ,you put too many BTU's acrossthe evaporator from the cabin & it is not at 40 deg ... 2007 Dodge Ram 2500 Mega Cab Laramie

Hi, I am a Sri Lankan and drive a 1995 Mercedes E300 Diesel. Since a few days ago the Air Condition stopped working when the car was idling in traffic. But as soon as the car starts to move the Aircon blows cold air and starts working. I checked the outside radiator/condenser Aircon fan to see whether it works and found that it normally works. However I couldn't get down in traffic to check whether it has stopped functioning when the problem came. The outside air temperature this ti


Low on freon the 1st place to check if you have a manifold gage check it other wise add a small can of freon you can get at auto parts store.. ... Mercedes-Benz E-Class

Air condition does not blow cold air unless driving. Hot air blows from vents when in idle


Check if the a/c fan is blowing if it is then change ur a/c condensor ... 2002 GMC Yukon XL

My 2005 Sante Fe has two issues and not sure if they are related. The air conditioning only blows cold air when on the highway. If I'm city driving and not going 40mph, it blow warm air. Secondly, the temp guage is over to the H. Help.


Since the temp gauge is not at normal\015\012\015\012Common Sense --stop using it\015\012\015\012Resolve the overheating issue first\015\012\015\012The A/C may be switched off because of the\015\012engine tem ... 2005 Hyundai Santa Fe

While driving this morning the defroster was a bit on the warm side for my taste, so I turned down the temp. control knob little by little with no response. So i attempted to use the air conditioner to see if i could get cold air....only the same hot air was coming out. Is there a shutter in there that may not be working? Or else, what could be causing this? I was pretty sure i heard a noise coming from behind the glove box when i was idling this morning but it was so quick that I could not e


The is a damper which changes when heating or cooling. The heating coming from a different area and cooling from the evaporator. ... 2006 Chevrolet Colorado

My '01 Tribute V6 3.0 has a rough idle at a cold start up, once the engine is warmed up and I have been driving for 5-10 minutes it clears up, but until then it will go dead if I do not give it gas at idle. I have changed the following: Ignition Coil ,Tune Up,Throttle Position Sensor,Crankshaft Position Sensor,Fuel Filter,Air Filter and have cleaned the following: Idle Control Valve.


Don't waste your time.\015\012Have the intake manifold gaskets (upper and lower) replaced.\015\012Check all vacuum lines for leaks.\015\012Clamp all vacuum hose connections.\015\012\015\012Do NOT replace any sensors unless the computer codes in ... 2001 Mazda Tribute

Air cool when driving, when idling gets warm and car overheats


Take a look through your front grill and see if there is alot of bugs,dirt,etc. blocking the cooling fins of the condensor and radiator. If so try rinsing them with a water hose, or air pressure. Some cleaners work well also,like " Simple Green " or ... 1998 Ford Mustang

I have a 1998 dodge ram 1500 that when at idle its blows warm air but when you are driving it changes to cold the door works off cable and is working fine is there something in there that sills the outside air off from cmoing in


Sounds to me like you ahve air in the cooling system or the coolant is low ... 2002 Mitsubishi Galant

My 2004 Chrysler Sebring's heat is not working. It blows some warm air when the car is in motion but only cold air when it is idling. The car is not overheating and still drives smooth. I have noticed a burnt type smell. I am taking the car in to be fixed but wanted some suggestions of what it might be and/ or cost. Not willing to spend more than the car is worth. Thank you in advance.


... 2004 Chrysler Sebring

2002 Discovery Land Rover. Having trouble with my heater. Blows out warm air when driving atleast most of the time. When at idle blows out cold air. I did replace the thermostat last year, could this be the problem again?


Check your coolant level. Does it overheat at all? ... 2002 Land Rover Discovery Series II
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 3.0495 seconds