 Engine Heat with AC On |
 Mar 17, 2017 - 7:31 PM
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Enthusiast  Joined Apr 7, '15 From New Mexico Currently Offline Reputation: 0 (0%)  |
It got a little warm today in southern New Mexico so today was the first day I drove the 3sgte swapped Celica in stop and go traffic with the AC on. Normally without the AC on, the engine temps bounce between 189 and 199 degrees F. When I turned the AC on it climbed to 209 degrees in the course of 5 minutes before I turned the AC off. Once I turned the AC off the temp quickly dropped back into the normal range in about another 2-3 minutes. I am reading the temps off an aftermarket water temp gauge with the sensor on the upper radiator hose. Below is a picture of the type of gauge I am using. It is a Glowshift MaxTow water temp gauge.
 When that gauge reads 215 degrees the stock dummy temp gauge in the car starts moving towards the H. I am running an Ebay 2-row radiator with aftermarket fans and I have a FMIC. Should I keep the aftermarket fans or go back to a stock radiator with stock fans? Also, the Ebay radiator is pretty dirty from constantly taking it in and out of the car during the build process, could that be the culprit? Is there something else I should check on that may be causing the engine temps to climb with he AC on? Below is a picture of the 2 different radiators.  Is there really an advantage to running a 2 row radiator with a 3sgte? This post has been edited by HardHead93: Mar 17, 2017 - 7:33 PM |
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Replies
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Mar 17, 2017 - 8:49 PM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
The stock fans will move WAY more air. The AC adds a fairly large heat load IN FRONT of the radiator meaning it's getting pre-heated air through it, that's why having high airflow is so critical when running the AC system AND trying to keep the car cool. I think swapping to stock fans will probably take care of the issue, but it would also be a good idea to clean the AC condenser and radiator with some AC coil cleaner per bottle directions.
Some cars have pusher fans on the AC, you could piggy back a single slim fan to the stock fans via a relay and mount it up front to blow inward (between the IC and condenser , there could be some airflow drop through the thicker radiator core, but that's a lot of added electrical load for possibly no gains in cooling. -------------------- |
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Mar 17, 2017 - 9:15 PM
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Enthusiast Joined Apr 7, '15 From New Mexico Currently Offline Reputation: 0 (0%) |
QUOTE (Bitter @ Mar 17, 2017 - 8:49 PM)  The stock fans will move WAY more air. The AC adds a fairly large heat load IN FRONT of the radiator meaning it's getting pre-heated air through it, that's why having high airflow is so critical when running the AC system AND trying to keep the car cool. I think swapping to stock fans will probably take care of the issue, but it would also be a good idea to clean the AC condenser and radiator with some AC coil cleaner per bottle directions. So stock fans with the stock radiator? I tried to put the stock fans on the 2 row radiator and they do not fit. |
Posts in this topic
HardHead93 Engine Heat with AC On Mar 17, 2017 - 7:31 PM
Bitter Cause the rad is too thick or the mounting studs d... Mar 17, 2017 - 9:35 PM
HardHead93 QUOTE (Bitter @ Mar 17, 2017 - 10:35... Mar 18, 2017 - 1:15 AM Bitter It shouldn't be hard to use some aluminum bar ... Mar 18, 2017 - 2:33 AM HardHead93 So I ran the stock radiator with the stock fans ye... Mar 19, 2017 - 11:09 AM Bitter I think you need to keep the crash bar, it's s... Mar 19, 2017 - 12:54 PM HardHead93 QUOTE (Bitter @ Mar 19, 2017 - 12:54... Mar 19, 2017 - 2:34 PM Bitter Ever seen a GT4 front bumper?
http://www.6gc.net/f... Mar 19, 2017 - 3:15 PM Box Anything under 240º is within operating spec on mo... Mar 19, 2017 - 8:47 PM HardHead93 QUOTE (Box @ Mar 19, 2017 - 8:47 PM)... Mar 20, 2017 - 7:59 AM brandon702bmx QUOTE (HardHead93 @ Mar 20, 2017 - 7... May 25, 2017 - 12:39 PM slavie Stock fans are better - they have scoops to pull t... Mar 20, 2017 - 10:35 AM Box The Duraflex bumper you posted earlier is a knock ... Mar 20, 2017 - 2:49 PM HardHead93 QUOTE (Box @ Mar 20, 2017 - 3:49 PM)... Mar 21, 2017 - 10:46 PM Box There out there, but usually they're overseas ... Mar 22, 2017 - 3:38 PM Bitter I still think if you dump the fogs and put two air... Mar 22, 2017 - 6:32 PM Box I want to say someone used to make vents for the C... Mar 23, 2017 - 2:40 AM HardHead93 I widened the opening on the carbon fiber bumper v... Mar 24, 2017 - 9:31 PM Box Or in order to satisfy my OCD and provide addition... Mar 25, 2017 - 1:33 PM Bitter I agree. Mar 25, 2017 - 3:56 PM HardHead93 QUOTE (Bitter @ Mar 25, 2017 - 4:56 ... Mar 25, 2017 - 7:38 PM HardHead93 This morning I got around to adding the 2nd bumper... Apr 1, 2017 - 6:14 PM Box Much better. Apr 1, 2017 - 6:27 PM Bitter If it ever stops working as good all you need is s... Apr 1, 2017 - 7:31 PM HardHead93 QUOTE (Bitter @ Apr 1, 2017 - 7:31 P... Apr 1, 2017 - 9:03 PM Box If you want giant nostrils on a car look no furthe... Apr 1, 2017 - 10:23 PM HardHead93 It has gotten a lot hotter here in southern New Me... Apr 10, 2017 - 10:31 PM Bitter Sounds like the system pressure is going high due ... Apr 10, 2017 - 11:01 PM Box I'd check the condenser and system pressure be... Apr 11, 2017 - 3:24 PM HardHead93 Everyone, thanks for all the info. Based on what ... Apr 11, 2017 - 8:22 PM Bitter I think dual SMIC is a better choice, if it's ... Apr 11, 2017 - 8:28 PM HardHead93 QUOTE (Bitter @ Apr 11, 2017 - 8:28 ... Apr 11, 2017 - 8:37 PM Bitter To equal the area of your single large FMIC I woul... Apr 11, 2017 - 9:18 PM Box The A4 is an 2.0 I4 and has the dual side mounts, ... Apr 11, 2017 - 10:53 PM Bitter And you can put small puller fans on them to keep ... Apr 12, 2017 - 7:31 AM HardHead93 I am still not convinced it is the intercooler cau... Apr 12, 2017 - 8:22 AM Bitter Paahhhh you don't need washer fluid. Well not ... Apr 12, 2017 - 12:18 PM HardHead93 QUOTE (Bitter @ Apr 12, 2017 - 1:18 ... Apr 12, 2017 - 2:01 PM Box A lot of people remove A/C as well, so they wouldn... Apr 12, 2017 - 4:28 PM HardHead93 QUOTE (Box @ Apr 12, 2017 - 5:28 PM)... Apr 12, 2017 - 6:04 PM Box From all the listings they say the Koyo despite be... Apr 12, 2017 - 7:13 PM HardHead93 QUOTE (Box @ Apr 12, 2017 - 7:13 PM)... Apr 12, 2017 - 7:20 PM Box I found a few on eBay in the $270-280 range, ... Apr 12, 2017 - 7:59 PM HardHead93 QUOTE (Box @ Apr 12, 2017 - 7:59 PM)... Apr 12, 2017 - 10:10 PM Box QUOTE (HardHead93 @ Apr 12, 2017 - 10... Apr 13, 2017 - 6:42 AM Bitter It would be wise to have a shop evac the AC system... Apr 12, 2017 - 10:59 PM slavie "While you're there" jobs can be a r... Apr 13, 2017 - 7:52 AM HardHead93 Just about all the parts are in and I am getting r... Apr 21, 2017 - 10:08 AM Bitter Wire it to an IAT with a fan controller kit so it ... Apr 21, 2017 - 1:28 PM Bitter http://www.autospeed.com/cms/article.html?...-Fan... Apr 21, 2017 - 10:06 PM HardHead93 I got my Koyo radiator and the stock fans fit on i... May 14, 2017 - 8:47 AM Bitter I sure hope so! You should get some heat shiel... May 14, 2017 - 10:34 AM Box Nothing like cutting/removing the crash bar to fit... May 14, 2017 - 4:07 PM HardHead93 Here is a shot of the front of the car with the ne... May 15, 2017 - 7:58 PM VavAlephVav http://www.andysautosport.com/images/extre...licac... May 25, 2017 - 9:03 PM HardHead93 I got everything installed and was excited that my... Jun 10, 2017 - 9:33 AM Bitter yep, too much heat load with the AC on, for sure t... Jun 10, 2017 - 10:18 AM Box That or time for a SMIC setup, but can always try ... Jun 10, 2017 - 5:02 PM HardHead93 QUOTE (Box @ Jun 10, 2017 - 6:02 PM)... Jun 10, 2017 - 9:35 PM richee3 It may be worthwhile to set up a W2A intercooler i... Jun 10, 2017 - 9:42 PM HardHead93 QUOTE (richee3 @ Jun 10, 2017 - 10:4... Jun 10, 2017 - 11:35 PM Box O.E. thermostat is always best, I think I'd tr... Jun 11, 2017 - 1:28 AM Bitter Yes, maybe even a lower temp TRD T-stat. Put thue ... Jun 11, 2017 - 10:16 AM HardHead93 I am getting ready to put a fan on the intercooler... Jun 13, 2017 - 7:19 AM Bitter They come on at temp, moving or not, as far as I k... Jun 13, 2017 - 7:49 AM Box I can't remember how it is with the Celica but... Jun 13, 2017 - 7:14 PM HardHead93 So I got the AutoZone thermostat out of the car an... Jun 14, 2017 - 5:09 PM Box Well fingers crossed that does it for you. It nev... Jun 14, 2017 - 6:34 PM Bitter I didn't even need to read the description to ... Jun 14, 2017 - 6:35 PM HardHead93 QUOTE (Bitter @ Jun 14, 2017 - 7:35 ... Jun 14, 2017 - 8:20 PM Box It's most any aftermarket. Depending on the c... Jun 14, 2017 - 8:48 PM HardHead93 Sorry I have not posted in a while but with what h... Jul 26, 2017 - 12:30 AM Box A/C is life, so worth it. Jul 26, 2017 - 1:17 AM slavie You reduced the area of the radiator that was gett... Jul 27, 2017 - 4:39 PM HardHead93 QUOTE (slavie @ Jul 27, 2017 - 5:39 ... Jul 27, 2017 - 5:53 PM Bitter I can't remember if it was you or someone else... Jul 27, 2017 - 9:02 PM HardHead93 It was you Bitter.
QUOTE (Bitter @ Apr 21, 2... Jul 27, 2017 - 9:37 PM Bitter That's great it's working so well. IAT con... Jul 27, 2017 - 10:33 PM HardHead93 I have the intercooler fan on a kit that turns on ... Jul 27, 2017 - 11:44 PM Bitter https://www.aliexpress.com/item/55-120-Degr...12-0... Jul 28, 2017 - 12:03 AM HardHead93 I got my new gauge installed today. Before I had ... Aug 6, 2017 - 12:42 AM Bitter And of course some nozzles to mist water at the he... Aug 6, 2017 - 2:34 PM |
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