Automatic Transmission
09-02-2009, 01:01 AM
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1986 190E 5 speed & 1986 190E Automatic
Automatic Transmission
Greetings and Salutations
I have an 86 190e Automatic and seek advice. When I first purchased it, the transmission would shift sporadically, without rhyme or reason. Trouble shooting it I figured the modulator valve was the culprit. I changed fluid and filter, and filled to the correct level. After turning the Modulator valve adjuster counter-clockwise, increasing hydraulic pressure, correcting the Ignition Timing, the performance improved. I also swapped out Vacuum hose connections about the engine with High Temp silicone and reset the Bowden Cable and now it shifts reasonably and I can accept its performance.
The only gripe is the second to third shift is lethargic and doesn’t shift crisply as does the rest of the RPM shift points. Is this a symptom requiring the replacement of the K-1 valve of which the part number and instruction of installation is documented within the bowels of this forum?
Benz Sage
I have an 86 190e Automatic and seek advice. When I first purchased it, the transmission would shift sporadically, without rhyme or reason. Trouble shooting it I figured the modulator valve was the culprit. I changed fluid and filter, and filled to the correct level. After turning the Modulator valve adjuster counter-clockwise, increasing hydraulic pressure, correcting the Ignition Timing, the performance improved. I also swapped out Vacuum hose connections about the engine with High Temp silicone and reset the Bowden Cable and now it shifts reasonably and I can accept its performance.
The only gripe is the second to third shift is lethargic and doesn’t shift crisply as does the rest of the RPM shift points. Is this a symptom requiring the replacement of the K-1 valve of which the part number and instruction of installation is documented within the bowels of this forum?
Benz Sage
Last edited by Benz Sage; 09-02-2009 at 01:21 AM.
