: Trans Hot Idle Engine



LiquidTrader
12-25-11, 12:22 AM
A couple of days ago I got this message ... Just got the car three weeks ago. What could it be? It's a 2005 STS. Trans Hot Idle Engine. Is it something serious? I'm going to go back to the dealer with it next week. What should I tell them to look into for this?

Thank you

ddalder
12-25-11, 01:06 AM
What were the weather conditions at the time? How hard had you been driving it? Were you towing or climing steep hills? Have you checked the fluid level, color, smell?

This message comes on when the transmission fluid exceeds a pre-determined temperature. It might be the result of many different factors.

The message means you should stop driving and let the car idle until the fluid temperature cools down.

LiquidTrader
12-25-11, 01:52 AM
The temperature was about 30 degrees. No towing or steep hills. I was on the highway mostly and accelerating a bit fast at times. I have not checked the transmission fluid. I'm not really a car guy that knows about trans fluid and what to check for when I am checking it.

But I did notice the RPMs staying in the 3k range and when I would let off the accelerator... I felt the force of it slowing down.

EChas3
12-25-11, 08:52 PM
Trans fluid check requires a lift. See your dealer or independant shop with STS experience.

ddalder
12-26-11, 10:30 PM
How fast were you driving? It almost sounds like your transmission wasn't in a high enough gear (based on your description). What engine do you have? Do you know the RPO code for your transmission option (MV3, M22, M82, etc)?

LiquidTrader
01-04-12, 07:23 PM
Bump

ddalder
01-04-12, 08:38 PM
Bump
So the million dollar question is... did you take it to the dealer? There could be any one of a hundred things going on and until this is investigated properly I don't think you're going to get the answer you're looking for. Tell them what the message was and they'll know where to start. There are some fundamental checks that need to be made before you can take an educated guess at this.

drebud
08-22-15, 04:13 PM
hello I hav 05 sts v8 153,000 miles; codes p0218 & p0897 plus trans hot idle engine msg appears occasionally, sometimes after driving city 88-90f weather (md/dc) for a few hours and once easy 24 mile trip. Went to reputable shop had fluid & filter changed, told no other codes came up good to go. Vehicle ran smooth great wonderful 24hr later notice clinking or rattling noise when shifting fr p to r, regular smooth shift other gears and now trans hot msg back . Does it look like a new tranny for this caddy ?? any info greatly appreciated

EChas3
08-22-15, 06:47 PM
Was this a transmission shop? Did you ask how many STS's they service?

A noise could be anything from a linkage to mounts and not be obvious. The STS stores many diagnostics as body codes or there can be more details when using GM-recommended tools. If the car drives OK, I wouldn't leap to replace/rebuild the transmission.

I don't work for GM, a dealer or anywhere in the auto industry, but why take a transmission issue to an independent shop? If the Cadillac dealers within reasonable distance all have bad reputations, seek a transmission shop that has serviced many STS's before yours. They are quite different than most cars and ours do share a transmission with some BMW's. I wouldn't take it to one of those dealers, but a good specialty transmission shop may be a more costly choice than a Cadillac dealer and not know as much about your car.

drebud
08-26-15, 01:29 PM
yep took it to specialty trans shop, cool beans thanx