I've done a ton of reading here and elsewhere about my current issue and thought i'd try to get some advice from actual LS owners before i grab my anal lube and head to the dealer.
Literally this happened from one day to the next. I get in my car around lunch time and its blistering hot out. Turn the a/c on and of course it isnt cold right away, always takes a minute or two to build up some coolness. Sitting and sitting and sitting, the air is warm and stale, doesnt feel like the a/c is working. I drive away and as i drive out of the parking lot it gets slightly cooler. I get on the road going 45mph and its alot cooler. On the highway, 65-70mph it seems to work perfect. Get off the highway and sit at a redlight.... back to warm.
So based on the whats happening i have ruled out the dccv failing again, if so the air would remain hot. Been there. I've checked the fan, kicks on like its supposed to when a/c turns on. I've washed out the condensor/radiator area, thinking that possibly driving thru heavy rain recently might have cruded up the condensor. Issue still there.
What gets me is when im stopped if i throw it into neutral and rev to 2-3k rpm it gets cooler, back to idle....warm. All components seem to be working fine. Had a new belt not too long ago. Stumped.
One thing that i read is regarding the compressor and refridgerant. At higher rpms the compressor "works" more efficiently supposedly. Perhaps slightly low on freon? Its not low enough to prevent compressor from kicking on, but wouldnt low freon cause a consistent output temp regardless of vehicle speed?
Its just wierd to me that when stopped it blows luke warm and on the highway i have to turn it down it gets so cold. What condition could exist to cause the variance in temp like that? Since the LS only has one fan, is it supposed to run at different speeds, like when a/c is on and car stopped? Possible relay or sensor? The engine temp stays constant and never goes high, so the fan is working fine in that respect. Did a computer scan and no codes, also did the DATC self test and no codes.
Literally this happened from one day to the next. I get in my car around lunch time and its blistering hot out. Turn the a/c on and of course it isnt cold right away, always takes a minute or two to build up some coolness. Sitting and sitting and sitting, the air is warm and stale, doesnt feel like the a/c is working. I drive away and as i drive out of the parking lot it gets slightly cooler. I get on the road going 45mph and its alot cooler. On the highway, 65-70mph it seems to work perfect. Get off the highway and sit at a redlight.... back to warm.
So based on the whats happening i have ruled out the dccv failing again, if so the air would remain hot. Been there. I've checked the fan, kicks on like its supposed to when a/c turns on. I've washed out the condensor/radiator area, thinking that possibly driving thru heavy rain recently might have cruded up the condensor. Issue still there.
What gets me is when im stopped if i throw it into neutral and rev to 2-3k rpm it gets cooler, back to idle....warm. All components seem to be working fine. Had a new belt not too long ago. Stumped.
One thing that i read is regarding the compressor and refridgerant. At higher rpms the compressor "works" more efficiently supposedly. Perhaps slightly low on freon? Its not low enough to prevent compressor from kicking on, but wouldnt low freon cause a consistent output temp regardless of vehicle speed?
Its just wierd to me that when stopped it blows luke warm and on the highway i have to turn it down it gets so cold. What condition could exist to cause the variance in temp like that? Since the LS only has one fan, is it supposed to run at different speeds, like when a/c is on and car stopped? Possible relay or sensor? The engine temp stays constant and never goes high, so the fan is working fine in that respect. Did a computer scan and no codes, also did the DATC self test and no codes.
