Dats the message i get on the dashboard of my '05 WK: TRANSMISSION OVER TEMP, with a check engine light on. it happened this morning. then i turn the car off, and turn it on again the message was gone and the check engine light was gone as well. has anybody experienced this before? wat seems to be the issue here? i noticed that the car has been acting weird too. at red light, when the folks in front of me start moving. i hit the gas, the car starts moving but very slowly, so slow the people in front of me would be far in front and the people behind start honking pro'bly saying "ARE U GONNA START F****** MOVING OR WAT?"
Transmission Over Temp
bullet700
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Guy at the dealer told me to ignore the transmission over temp message if nothing else was going on.
It's been 3-4 years and nothing has happened so I just ignore it. It tends to come on once or twice a month every summer.
If your transmission oil isn't hot when it comes on I'd ignore it. You can even pull over and check the transmission oil pan with a heat gun I was told..
It's been 3-4 years and nothing has happened so I just ignore it. It tends to come on once or twice a month every summer.
If your transmission oil isn't hot when it comes on I'd ignore it. You can even pull over and check the transmission oil pan with a heat gun I was told..
Thanks for all the info and your quick reply.
What other issues or signs of failure were you experiencing? The only issues that I've noticed on mine: radio/navigation occasionally turning on and off repeatedly (has done it 2 or 3 times), Auto High Beam option turning on and off on its own occasionally, and radiator fan on at full blast when transmission over temp message pops up. Also, the Service Tire Pressure System message is on because of a failing tpms sensor but that's been on for a while now.
I've also noticed (not sure if it's related) that on cold start ups it idles at around 7-800 rpm right away. Other cars I've had idle higher on cold start ups and the rpms gradually drop as the vehicle is warmed up. Not sure if that's just how the Hemi motor operates?
Trans Over Temp message has popped up 3 times already today. Looking at purchasing a refurb pcm but wanted to get a little more info from your experience before I ordered it. Thanks again and hope to hear from you.
Our 2006 Hemi with about 180k miles started doing this about a week ago. No smell of burnt tran oil and tran oil at correct level. Took it to dealer and they were no help. I mentioned I read a out the PCM going bad and the service rep told me that the more I read the more reasons for the light illuminating I will find.
I am curious how much is a returned PCM and where do you get it programmed to your vehicle besides the dealer?
Thanks in advance.
I am curious how much is a returned PCM and where do you get it programmed to your vehicle besides the dealer?
Thanks in advance.
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I just replaced the water pump car was running fine now I'm getting the transmission over temp light and my jeep cut off and wont start ,any suggestions .
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I am getting this same message on my 06 Jeep Grand Cherokee 5.7L. I got the message a while ago, took it to a transmission shop and they replaced the module/temperature sensor inside the transmission. And it came on the very next day. Went back to the shop and thrry let it sit and run for hours checking the temp and it never got hot. At first it only came on after a long drive then putting in in park and let it sit and run for a few minutes. It's now coming on almost every time we drive it. I also have the service tire pressure system warning that comes on every time I drive it too. This also came on just once in a while but now comes on every day now. Any suggestions or updates in this?
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I have a 05 that did that and it was transmission temperature sensor
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Welcome to the Forum, from Cave Creek AZ.
I have 05 Jeep GC with the 5.7 HEMI, 214k miles. I've had similar problems. The symptoms were sporadic. The AT gets stuck in 3rd while the FAN goes on max speed. Sometimes, I get the Trans Fluid overtemp msg. I get no codes from the scanner. When I disconnect the battery, OR remove the fuse for the PCM for few seconds, and reconnect, the AT runs just fine as long as I don't turn off the car. Sometimes I get a code for no communication with the TCM. That's a hint right there!
Here are the things I've until I've finally fixed the problem (pulled my hair on this one):
1. Changed trans fluid & filter, Replaced the pan with new one with plug. Forget about using the old pan. Just drill a hole in it to drain w/o the mess of spelling over. no good.
2. Replaced the valve body with rebuilt unit. no good.
3. Replaced broken ground straps to the PCM and under the car when AT is has one connected to chassis. no good.
4. Replaced Input/Output speed sensors attached to the AT. no good.
5. Attached a quick Battery disconnect switch. That was a good workaround as retting the PCM fixed the problem temporarily until next trip. Thought about adding a battery disconnect with remote.
6. I sent my PCM to a repair ship called "SIA Electronics" in eBay. They found no issue with the PCM. They charged me a diagnostics fee and sent it back as is. No good.
I'm pulling my hair cause I'm running out of ideas.
7. Took my Jeep to a Stealer dlr. They did the recalls and updated the software on my PCM for $175. no good.
8. Decided to buy a refurbished PCM from eBay seller called "importapart", and gave them the VIN & miles. I got the PCM in 2 days. Plugged it in in 5 mins, and wallah...!!!! It worked!. Took the truck on multiple drives and tried turning off and restarting. That worked!!
Bottom line, it was a faulty PCM all along. Even if you get no codes. A bad PCM has a mind of its own.
Beware tho. Those PCMs are expensive. I highly recommend buying it from a seller that does the programming for you for Plug & play. Do NOT buy a used PCM that requires you to take it to a dlr for programming.
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This happened to me with my 06 GC 4.7L.... was having the same issues and thought it was something with the engine. Turns out it was my Remote key that wasn't letting the car turn on, I used the spare one I had and bam it shot right back up with no issues what's so over, besides the Transmission over temp
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Anyone else replace pcm for a fix? My over trans over temp fan comes on right after starting the engine cold within a few minutes but no trans over temp message. Has not done this in a while ..... now its been steady last two days. Nothing over heating ... trans fluid good. When at idle i can rev the motor and fan will cut off for a few seconds and cut back on or if im driving i can accelerate and the fan will go off and come back on. Ideas? suggestions?
I had this overheating transmission problem for a couple of years and finally a mechanic found the problems. The condenser fan was not working as well as the fan clutch. Since that time this warning has not returned since these 2 parts were changed.
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Just had a similar issue. 2005 V6 3.7L. Had it fixed by a shop and it worked fine for about 2 months. Lately the heat hasnt been gettung warm for 30+ min. Today the temp went from 0 to trans over temp within 10 min. Pulled the fuse for all that stuff, put it back and Tried to start it again and it didn't work until I tried again and had my foot on the gas a little. When it started the trans temp was right in the middle barely wavering AND the Heat decided to work. Any idea what's going on?
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Who did it for you?
Hello,
I know this is an old thread,
I have exactly the same symptoms on my
Grand Cherokee 2005 5.7
What have you done to resolve these symptoms, thinking about replacing the PCM.
Thank you
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Hey mines is at sia electronics as we speak buy one on eBay send it to them to have it reprogrammed for your truck. Sent my original to them found out it had a shortage that couldn’t be fixed. Got the spare back from my buddy that was with the other truck I sold and sent it back to sia electronics. Now patiently waiting for the call back from them.
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I have 2007 Jeep GC Laredo V6 3.7 2WD, 210K miles. I have the Trans over Temp error on the console. I checked the codes and I have a U0101 Lost Connection to TCM. The car actually start and runs great but the transmission is in limp mode. This kind of bricks your car so this is very frustrating!
Your Trans over Temp error could be this U0101 lost connection to TCM. The other errors are all just errors not reported from the TCM like trans temp, slip gear status... false errors. The real culprit is the lost connection.
I have checked just about everything anyone has suggested to check for this. Not the starter wire. Not the shifter as it is shifting. There is power and ground at the TCM. The bus lines for the TCM show +2.6V to ground. All other PCM functions seem to work but there is a lost connection to radio. I did install a new radio a few months ago but it was all working fine. I removed the radio from the data bus and that was not the issue.
So I ordered a used TCM ($44) and a used PCM($136) pre-programmed to my VIN. Awaiting to see if these fix the issue.
Your Trans over Temp error could be this U0101 lost connection to TCM. The other errors are all just errors not reported from the TCM like trans temp, slip gear status... false errors. The real culprit is the lost connection.
I have checked just about everything anyone has suggested to check for this. Not the starter wire. Not the shifter as it is shifting. There is power and ground at the TCM. The bus lines for the TCM show +2.6V to ground. All other PCM functions seem to work but there is a lost connection to radio. I did install a new radio a few months ago but it was all working fine. I removed the radio from the data bus and that was not the issue.
So I ordered a used TCM ($44) and a used PCM($136) pre-programmed to my VIN. Awaiting to see if these fix the issue.
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2025, having the same issue...
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