My car is not blowing warm air at idle when warmed up. When under load driving the heat comes back then chills down when stopped at a light or traffic. I did a coolant flush by fill and gravity drain earlier this summer and have had zero issues with overheating or anything else. Could there be air in the heater core or is my water pump or thermostat failing?
View 4 Replies2002 Passat v6 - climatronic control...
I have just cold air blowing at idle and under load. I have read posts and checked the following: temp remains at 190, heater coil hoses-both are hot and removed the dash to see if the flapper door (red arm) was moving-it is. Any other things I can check?
Temp knob is turned full to hottest setting and heat only blows warm. I checked the hose from the IACV and hose from just past the Thermostat housing and they are also hot. Where the hose enters the "Damper" just outside the firewall, it is hot but the small portion of hose after the damper into the firewall is only moderately warm. Is it possible that damper is clogged or is the heating coil iside the car clogged?
View 4 RepliesMy manual heat/cold adjustment dial is working fine and transitions from heat to cold readily. However when in max heat, it is blowing luke warm. The higher the RPMs going down the road the warmer it blows (still not near as hot as normal), then idling at stop lights or in park it goes back to warm only.
My engine temperature is running normal at all RPM levels while driving and idling. Partially clogged heater core maybe, where higher RPMs force more water through it? I assume its not the water pump or thermostat since my operating temperature is staying normal...
To start I have a 1991 super duty with a 7.3 in it. I replaced the evaporator, dryer and orifice tube. I added 4 cans of Freon and the a/c still blew warm so I added another can same result. I put one of the throw away gauges on the truck and it read empty so now I'm mad thinking it all leaked out only other option I could think of was to replace the condenser so went to break the lines to change it and Freon came spewing out so I tightened the lines back up and added another can of Freon still warm.
I got good gauges and hooked them up to high and low sides. High side was reading 100+ and low side was around 100 maybe a little lower. Oh yeah the compressor will come on and go right back off. So I let some of the Freon out and dropped the pressure down to 50 the high side was still a little below 100 so I let a little more out and now there is no Freon in the system again.
The lines never got cold and the dryer stayed warm the whole time. The first time I put Freon in before I started replacing stuff the dryer would get ice cold. My only thought is maybe the compressor is bad but I was told it was just replaced but Freon was never put in it. Oh and when I put the new parts in I replaced the orings in the compressor and put new oil in the compressor.
Have a 2003 gmc truck 1500hd. When i come to a stop or at idle , my ac blows warm air out. At cursing speed it blows cold air.
View 5 RepliesI just bought a 2000 f250 diesel truck and am having problems with the ac. When I first turn on the ac it blows very cold and works perfectly but after about 5 or 10 minutes it will start blowing warm and slightly humid air for probably around 5 or 10 minutes and then suddenly the very cold air will come back. This cycle repeats over and over again and I'm not sure what is wrong.
View 5 Replies2007 GS 350 109,500 miles. My heater was blowing cold at idle and warm when driving so I took it to dealer. To my surprise, dealer says its a blown head gasket. No other symptoms. No white smoke, no smells, no warning lights on dash, and running fine. Just had VVT gear recall done last week.
Fortunately I have Lexus extended warranty good thru 125k miles and Feb 2014. I do my own maintenance (plugs, oil changes etc). Have records for all. But have not done coolant change (due at 100k).
My '06 GS450h has developed a fault where the heater blows cold at idle and low revs but blows warm when driving or revving the engine at a standstill. The coolant hasn't dropped at all and the car never goes above halfway on the temp gauge. Its starting to get frustrating now the cold weather has set in and temps dropping! Long journeys are ok as at high speeds it stays warm but short journeys are uncomfortable!
I just had a feel of the rad hoses and hoses that go into the matrix (engine side of bulk head) and matrix hoses feel warm (both of them), the top hose to the rad is warm but not hot and bottom hose is cold suggesting the stat hasn't opened yet. Its cold outside so getting the car up to temp is quite difficult without a long drive (rush hour at the mo).
Still I just had the car parked on the drive and cranked the heater up to max and held the accelerator for a while and super warm air blows out. The engine cuts back out as "normal operating temp" has been reached for battery mode and then the heater goes cool again! Still the bottom radiator hose is cool and top hose not massively warm. It has never overheated thus far and I drive 150miles a day back and forth to Reading from Cheltenham 4 nights a week.
Only thing I can think of is a sticky thermostat or water pump not operating sufficiently enough to circulate the water? Its getting colder and short trips where it used to blow warm air nice and quickly (within 3-5miles) are becoming unpleasant!
Under load, the car shimmies back and forth. Left to right. But only under load. It will even do it in 5th gear at 1500 rpm. The problem goes away when foot off the gas, or in neutral.
Already did a drivers side axle, passenger side axle, and dog bone mount.
I removed the intake to inspect the transmission mount and this is what I found below. Should it be able to wiggle this much? I imagine the mount is original to the car. Which has 156,000 on it currently.
Heat blows warm at best and A/C isn't all that cold. I want to believe its a blend door issue and dive into it this weekend and fix it but there isn't a single piece of foam coming out of any of the vents. Of all the systems on the car, HVAC isn't my cup of tea I don't know anything about it. What else could be the problem? I can live without A/C but the heat things must be fixed.
View 4 RepliesSo the other day my ac had a hiccup and wouldn't blow any cold air. Ac button was on, LO temp setting, and it just blew warm humid air for about 10 mins. I finally pulled over and tried turning ac button off and on and still no luck. Finally I shut the car off, turned it back on and it instantly blew cold. It's been a few days and it hasn't happened again, but I find myself questioning whether it will work every time. It's 110 here in Phoenix so ac is basically a necessity. I know the dealer won't be able to replicate it so I don't really want to waste my time.
View 6 RepliesMy R stopped blowing any air. I can just barely feel warmth coming from the vents, but blower is not working... I looked for some threads on this but nothing.
View 2 RepliesI have a 03 golf 2.0 with 82k on it. I am having a really weird issue with car pulling left under load and then going back to the right when letting off the gas. It's more noticeable at higher speeds....over 40mph or so. I did a quick check under the car at ball joints, cv joints and can't really see anything that would make this issue. Would a trans mount or motor mount cause this? Is there something I am missing?
View 2 RepliesI warm up my car in the morning and let it sit for a bit before I drive away, but after the initial warm up (You can tell when the rev drops back below 1k that it's done), I can sometimes hear a high pitch noise that's very subtle from within the car. However, the moment I walk towards the engine bay and open it up, the sound disappears. If I give gas to rev up the engine, it'll also disappear, but as soon as the rev returns to idle ~800 rpm, the sound appears again. Each time that im at a stop light or park(on idle), the sound that look more like a vibration appear but not everytime, it look inconstant. I went to the dealer and they laugh at me blaming the cold weather and a little piece in front of the engine that I don't remember the name that regulate the fuel.
View 14 RepliesI've got a R32 with nearly 100K miles on it. Several days ago I was adjusting my shifter cables and am not sure if i accidentally leaned up against any sensors or their associated connectors that are in that vicinity. I took the car for a drive to feel how the shifter adjustment had turned out. I was building engine RPM from 2500-4000 RPM, I let off the acceleration pedal and felt a small and new kick as if something got loose, popped off, or backfired. Not sure what it was but my engine started to misfire in what seemed to be in several cylinders. It idles rough but the needle doesn't exceed 1000 RPM during idle. When driving calmly, there is sporadic misfire. If pushed hard to build RPM, it will misfire heavily.
I scanned the vehicle and got the following codes,
P0300
P0301
P0303
P0305
I've checked
- Every hose I can see and feel for Vacuum leaks
- Checked all my fuses
- Swapped coils from banks 1,3,5, with 2,4,6
- Disconnected, cleaned and reconnected camshaft hall sender sensors and tightened the bolts.
- Have erased the coded and the same codes are back.
I can't figure if it's a TB issue as I've just had it replaced or a mount problem. I only get the knock on biting point idle and pull away under load. This noise is driving me insane.
View 2 RepliesI've recently purchased a 2007 Prius and I just noticed few days go that A/C blows warm air (weather was fair when I bought it and I can't remember if it really worked or not then) and middle vents do not blow any air. I'm not sure if two problems are connected but I do want to get both fixed without spending $$$ at the dealership. Where can I start?
View 5 RepliesHere's what's done to the car so far:
Evoms CAI
Autotech HPFP Insert
UM Fully Loaded Stage 2
Magnaflow Catback
R8 Coilpacks
Now my problem lies in the fact that the car has an unusual "loping" idle once it's warmed up. I noticed it very slightly when I first installed the catback simply because that exhaust is louder than stock. Now with the tune it seems to be even more noticible and ocasionally the engine will stumble upon a warm startup. I've pulled up VCDS and looked at the timing measuring blocks during idle and it varies between 0 and 13.5 BTDC/ATDC, the lowest the revs go is about 700 and the the car idles most of the time at about 800. A few hundred miles ago there was a code for Fuel pressure too high (P0088) and an o2 sensor reading too rich (P2271), I saved said codes and cleared them and they have not returned.
I swapped transmissions in an 01 vr6 glx automatic car. The car will start and run perfectly until it reaches operating temperature. Once it hits 190 f it shuts down and will only start again if u wait a few minutes. It has me stumped. I have unpluged the coolant temp sensor, and Have checked for vacuum leaks and loose connections but no luck.
View 1 RepliesI have a 1999.5 jetta vr6, the CEL is on (p0102 MAF sensor circuit low or something like that...). When i start it up, it often dies really soon after and until its warm it will idle really roughly. I'll have to start it up between 5 and 15 times... Once its warm and about 190 F oil temp it runs just fine, but still has a slightly rough idle.
I have a new MAF sensor coming in, or if there are any other things i should check that might contribute to the problem.