Question about 2000 Cadillac DeVille
I just noticed going down the hyw that my car seemed to me to be at a high rpm for the speed i was traveling...so i pulled it down into 3rd and it did shift...i put it back in overdrive and it shift back but rpm still seemed high
You may have a torque converter not locking. At low engine load conditions at hwy speeds to save gas the engine computer will tell the trans to lock the converter which results in lower rpm. Either the TCC solenoid is not locking the converter, or the PCM has failed and not sending signal to the TCC solenoid. If this has been going on over a week, im willing to bet the PCM has failed, otherwise a good one should catch the TCC if its not working and should throw a code.
Its my best guess with no tools to know for sure. Good luck :)
Posted on Jun 14, 2014
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Posted on Jan 02, 2017
(Quote) I looked up code E49 and there is no such code.
The above quote is from my colleague named “txkjun”. With all due respect to him and his “Guru” status he is wrong. The code “E49” does exist, and it is an “AIR management system error".
At this time I would like to apologize for typing a word that didn’t belong in my response.
You see, when I said the code “E-49” “DOES NOT” exist I was responding to the answer that: “Txkjun” gave you.
I meant to say that the code “DOES” exist, but I simply typed in the word “NOT” by accident.
I'll get back to you with repair procedures in a few hours.
Posted on Jan 01, 2009
If you like go ahead and let someone sell and replace your transmission but here is my suggestion! Check around and see if you can find a minor vacuum leak! This can simply be the big round hose that goes from the fuel injection to the power brake hub! This is normally a push in connector which has about a 1/2 inch hose clamped on it! If there is any kink or the connector is not in correctly a leak will occur and the transmission will shift rough as though you will be thrown out of the vehicle! Try unplugging this connector and plug it back in hard and straight and maybe you will be lucky and fix your problem. If the vacuum is correct your transmission will shift better than you have ever experienced!
Posted on Aug 16, 2009
Sounds like the engine is idling to high. There is a procedure that you must go through to set it. Reply and I will let you know how to set it.
Posted on Apr 06, 2010
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