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Overheating


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24 replies to this topic

#1 srender13

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Posted 13 June 2011 - 02:37 PM

Hello PL community, lately my car has been overheating when it's hot, and on long road trips. (Driving from Colorado Springs to Denver) Mostly, started happening after I installed my Intake (Injen CAI.) Checked all clamps, and connections on the intake, everything is good there. I'm thinking I need to replace my Thermostat, or take my car to the dealer and have them reconfigure the ECU? I'm kinda at a loss, has anyone else ran into this problem? Oh, when this happens I don't get any acceleration, and have the text "Slow Down" on my HUD thing.

Thanks for your time.

~srender13
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#2 jRox

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Posted 13 June 2011 - 02:49 PM

Remove the negative terminal from your battery for 15-20minutes. Then bolt it back in place. See how if that solves your problem. If not, remove your intake and have the dealer figure it out.
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#3 lancer0220

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Posted 13 June 2011 - 02:49 PM

I think thats the CVT transmission over heating not the engine, how many miles on your car, is your car indeed a CVT automatic ? What trim is your lancer (de es or gts) ?
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#4 srender13

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Posted 13 June 2011 - 02:55 PM

I think thats the CVT transmission over heating not the engine, how many miles on your car, is your car indeed a CVT automatic ? What trim is your lancer (de es or gts) ?


Yes, CVT. 2008 GTS. Have 30k miles on it. Rounding up.
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#5 DSTR0YTHERUNNER

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Posted 13 June 2011 - 03:54 PM

hmm i would go with jrox on this one. put your stock intake back on, and go have your dealer check it out.. you should still be under warranty if im not mistaken. good luck getting that figured out.

btw, that is funny that the hud says "slow down" i have never heard of that before haha
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#6 lancer0220

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Posted 13 June 2011 - 04:26 PM

Yes, CVT. 2008 GTS. Have 30k miles on it. Rounding up.



when you installed the intake the only thing your messing with that has anything to do with the transmission is the CVT cooler. More details about the duration of your travels and the temperature which causes this message to appear might be helpful in understanding your problem. Also, How many times has this happened ?



Problem with taking it back to the dealer is most likely between the time that the "slow down" message appears and the time he goes to the dealer any DTC (if any) that would be set probably clears itself once the trans temperatures come back into range. So when you tell the dealer my car is saying "slow down" they will probably assume you are doing something you shouldn't and they most likely will not be able to replicate the problem....since according to the OP this only happens on long trips or in extremely hot temperatures...



thinking about it again...the dealership will probably tell you some BS that you should follow the "severe maintenance" schedule and tell you that you must do a CVT transmission drain/refill in order to prevent the transmission from overheating again. It could be a fluke or if it has occurred more than a few times it could be a sign that you do need to do a transmission fluid drain/refill...



I know on two separate road trips in hot temperatures on the way to Houston (2-3 hr trip) I got warnings while driving at 75mph that I needed to service my TPMS (not just the low tire pressure warning but the warning to service the system) , I immediately pulled over assuming two or more tires were too low, upon inspection everything was a-ok and I never saw the warning again. On my drive to California (which is much longer) I never saw the warning, and 40k miles later (currently at 59k miles)I have yet to see the warning again.
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#7 Jerky

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Posted 13 June 2011 - 06:11 PM

its my understanding that when installing the injen cold air, onto a cvt car, there is a mounting bracket that comes with the intake to reposition the tranny cooler. im not 100% on this, but either moving it or not moving it might have something to do with it not getting enough air to cool it down.
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#8 srender13

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Posted 13 June 2011 - 08:03 PM

Right on, will give the advice a shot! Thanks for the quick, and informative responses. Gonna try replacing the thermostat anyway, seeing as how I already got it. If it's a no go, I will take out the intake and take it to the dealer.
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#9 Poncho

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Posted 13 June 2011 - 08:08 PM

hey i see ur in the springs where about? and whats your car look like?
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Yeah Buddy est. 2010




#10 Poncho

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Posted 13 June 2011 - 08:09 PM

maybe i can help you i just put the CAI in my car...not problems yet lol
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Yeah Buddy est. 2010




#11 Bladed

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Posted 13 June 2011 - 10:05 PM

Double check the transmission cooler. It's definitely not the engine overheating since it doesn't say "slow down" when the engine is hot, only when the transmission is. And seeing how the transmission cooler is the only thing you touched when putting in the CAI, it's probably loose, restricted, or broken or something.
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#12 srender13

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Posted 13 June 2011 - 10:52 PM

hey i see ur in the springs where about? and whats your car look like?


South springs, Hancock and Delta. Car is TB, Exhaust and Intake is all I have. Still pretty much stock.
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#13 Poncho

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Posted 13 June 2011 - 11:03 PM

sweet i know where thats at...you can see my pics i drive a WW 09 GTS blacked out front with injen CAI and GREDDY T-IC exhaust...idk if i've seen u around...im on Ft. Carson so...
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Yeah Buddy est. 2010




#14 srender13

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Posted 14 June 2011 - 12:00 AM

sweet i know where thats at...you can see my pics i drive a WW 09 GTS blacked out front with injen CAI and GREDDY T-IC exhaust...idk if i've seen u around...im on Ft. Carson so...


Right on, need to meet up some time.
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#15 Poncho

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Posted 14 June 2011 - 12:13 AM

for sure i can try to help u out with whatever problem your having with ur CAI or what not...whenever and where ever im always off and have free time in the evenings and go out on the weekends and chill with ppl at the shell across from chapel hills mall on the corner of N. Academy and briargate... u got FB?
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Yeah Buddy est. 2010




#16 lancer0220

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Posted 14 June 2011 - 08:54 AM

Double check the transmission cooler. It's definitely not the engine overheating since it doesn't say "slow down" when the engine is hot, only when the transmission is. And seeing how the transmission cooler is the only thing you touched when putting in the CAI, it's probably loose, restricted, or broken or something.



exactly like i said its most likely something to do with what he did during the injen CAI installation.

OP, if you do put back to stock and go to the dealer make sure you also put the tranny cooler back to its original spot, carefully match up the lines on the bolts as close
as possible otherwise they will know you messed with your transmission cooler and may come up with some clever claim that you messed with it
lost some fluid and now your overheating...
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#17 srender13

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Posted 14 June 2011 - 12:27 PM

exactly like i said its most likely something to do with what he did during the injen CAI installation.

OP, if you do put back to stock and go to the dealer make sure you also put the tranny cooler back to its original spot, carefully match up the lines on the bolts as close
as possible otherwise they will know you messed with your transmission cooler and may come up with some clever claim that you messed with it
lost some fluid and now your overheating...


Thanks for the advice, gonna check that first, as soon as I have some free time.
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#18 Angeal

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Posted 15 June 2011 - 04:35 PM

recommend getting a tactrix open-port 2.0 and using evoscan to diagnose the problem. with these you can easily diagnose, log and sometimes fix problems you may come across. not bad for under $200 and you can find vid tutorials all over the web.
the dealer will charge you a diagnosis fee which alone is almost half this price and its probably a problem you can fix yourself.
http://www.tactrix.c...chk=1&Itemid=53
http://www.evoscan.com/


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#19 matchstick

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Posted 15 June 2011 - 10:25 PM

OK, The Slow Down msg, is ONLY for the CVT Tranny overheating, that is a fact. It is NOT the engine coolant overheating, so replacing the thermostat is the wrong solution and a waste of money.

The Injen CAI DOES comes with a bracket to relocate the CVT cooler so it get's proper airflow... and the fact that it happened after the CAI install should tell you that is the problem.
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#20 Xterminater

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Posted 03 June 2013 - 01:32 PM

My mistake about creating a new thread on this topic so I will simply copy n paste over here bc I did not see a clear solution to this issue yet :(


Hello all PL members and experts!

I have an 09 lancer es and I just changed it's cvt fluid last year at the mitsubishi dealer but today when driving on the highway for an hr at 75mph, i get a warning light to tell me to slow down!

I then look up what that means and it means my fluid is too hot. So the car as a safety precaution, slows down and then eventually went 0, like I couldn't accelerate at all, to prevent overheat. I then read more and they said i should put a intercooler in to help with that heating issue if it doesn't have one. Oh and by the way the temperature today was at 90 Fahrenheit, and I didn't abuse the car at all. All I have is a k&n intake filter with a short ram intake pipe from RRM v2.

Is there a way to fix this permanently, or should I just take this back to the original Mitsubishi dealer who put in the tranny fluid so they can see wtf they effed up at.

And how effective and cost will it be to install a intercooler.

Thanks for all the help.
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