BenzWorld Junior Member
Date registered: Jan 2010
Vehicle: 1997 C230 185K (Sold) 1999 C280 Sport 122K (Sold) 2007 C230 105K
Location: Houston, TX
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Limp Home Mode 1997 C230
So now this has happened 3 times in the past two days. after a stop the car will kick into limp mode and will not shifty. Sometimes when I stop, turn off the car and start again it shifts fine, other times the limp mode persists. What usually causes this?
Can this be cause by bad transmission fluid?
The CEL is not on. Can there still be codes i can get even though the CEL is not on?
I have driven the car from 110K-185K and have never changed the transmission fluid.
I went ahead and changed the transmission fluid, gasket and filter.
-There was some shaving on the magnet which I cleaned off.
-The fluid was totally black and smelly so it was way overdue.
-It put out about 7 Qt of black bad oil and I replaced with the new fluid.
-After several readings on forums I decided to go with the valvoline max life.
-The initial jerk/rough take off on 1st gear is gone
-The rough shift between 1 and 2 is gone.
-The general shifting of the car is way smoother than before.
-I still have not been able to accurately measure the temperature of the transmission fluid because I have not had a chance
to drive the car long enough (I read on a forum that it needs a good 30 min drive)
Howver, I still was getting the clunks on shift from 'P' - D and from 'P' - 'R' and limp mode at initial run. (in the morning)
After reading more postings I found that unplugging the negative terminal may help solve this, I did that and its way better. I am waiting to see if I will have limp mode issues tomorrow morning. Whats left I attribute to the necessity of differential fluid change which I believe needs to be done also. Can anyone second that or counter? Just need feedback.
Now one more thing that usually happens, not all the time but normally at initial/start up of the car on any day. There is a strange noise that sounds like it comes from the transmission (Like a screaming sound, dont really know how to describe it, maybe a thin sheet of metal vibrating and making a whining noise) that only happens in the 1st/2nd gear and after the transmission warms up it disappears, usually in less tha 2 min.
Anyone have an idea what that could be?
Is there anything else I need to do with this transmission to get the best results. I read somewhere on another forum that I should inspect the wiring connections on the transmission, where are these located?
Thanks for your help.
Last edited by veli410; 08-30-2011 at 08:02 PM.