A/C, Rear window wiper and A/C fan speed when turned off kills the engine
05-31-2024, 03:42 AM
#1
Junior Member
Thread Starter
A/C, Rear window wiper and A/C fan speed when turned off kills the engine
2000 MB ML 320 w163
Man-O-Man, Did I ever Royaly Screw up. Had been having an A/C issue. After ordering a new hose due to previous owner/mechanic galing the threads for the Trinary sensor. Then 3 sensors later would not screw on to the new hose. I finally got out my "measure it twice and cut it once" tool. I found that a 3/8x24 die cut new threads on the the axcess port and the sensor now fits well. After a good vacume pumping I and able to add 1 cn/12 oz 134a. Since I do not have way to force the required amt. of freon into the system I have to like all the other cars I have owned, I have to have the compressor on to finish up the remaining 14oz in to the suction side while running. I KNOW I KNOW. but that has worked for me since we where using 12 in auto systems, 100%sucess rate with 12 and 134a since the early 80's.
I have used this method 2x on this SUV while trying to get the Trinary on to evaluate if it was that sensor or a module failure. I have it it scanned by a Pro Indie shop and it had previously showed what might be the sensor failure so my quest has been to at least get a new undamaged sensor in place then check for AAM? failure.
In this prodedure I may have stuck my finger where it didn't belong. Now the Compressor runs, however If the rear wiper switch or the A/C switch or the A/C interior fan switch gets turned off the engine dies, door locks flip up and down and this is beyond aggrivating and is down right dangerous to drive.
My question , has anyone else had something like this happen. My hope is there might be some codes to clear that I can't get to. My OBD2 is a cheappie and at this tiime does not show any codes but I know a Hi dollar scanner would find them. Or is my glass only 1/2 full and I really now have a waded up mess of melted wires and totally fried module.
Any help or input gladly accepted,,, please be nice. Im great with my 95 F150 but relativly new to MB's
Man-O-Man, Did I ever Royaly Screw up. Had been having an A/C issue. After ordering a new hose due to previous owner/mechanic galing the threads for the Trinary sensor. Then 3 sensors later would not screw on to the new hose. I finally got out my "measure it twice and cut it once" tool. I found that a 3/8x24 die cut new threads on the the axcess port and the sensor now fits well. After a good vacume pumping I and able to add 1 cn/12 oz 134a. Since I do not have way to force the required amt. of freon into the system I have to like all the other cars I have owned, I have to have the compressor on to finish up the remaining 14oz in to the suction side while running. I KNOW I KNOW. but that has worked for me since we where using 12 in auto systems, 100%sucess rate with 12 and 134a since the early 80's.
I have used this method 2x on this SUV while trying to get the Trinary on to evaluate if it was that sensor or a module failure. I have it it scanned by a Pro Indie shop and it had previously showed what might be the sensor failure so my quest has been to at least get a new undamaged sensor in place then check for AAM? failure.
In this prodedure I may have stuck my finger where it didn't belong. Now the Compressor runs, however If the rear wiper switch or the A/C switch or the A/C interior fan switch gets turned off the engine dies, door locks flip up and down and this is beyond aggrivating and is down right dangerous to drive.
My question , has anyone else had something like this happen. My hope is there might be some codes to clear that I can't get to. My OBD2 is a cheappie and at this tiime does not show any codes but I know a Hi dollar scanner would find them. Or is my glass only 1/2 full and I really now have a waded up mess of melted wires and totally fried module.
Any help or input gladly accepted,,, please be nice. Im great with my 95 F150 but relativly new to MB's
