Transmission Cooler Flush …..Flush or not to Flush.
So lately we have been getting an influx of customers who can’t answer this question. Did you flush the transmission cooler? Some typical answers we are getting are like this. “Yeah we ran it through the parts cleaner” or “sure we replaced the fluid” or “what’s a cooler?” The best one yet is when we ask if the cooler was flushed and we get a reply of “yes”. So then we follow up with a question and ask what kind of flush machine did you use? There is a long period of silence. Yep, you guessed it they didn’t flush the cooler. Chances are most transmissions shops are NOT using the right methods to flush your cooler or transmission. Proper methods can be discussed at a later time.
So why is this critical to Sunbelt Valve Body Builders? Well for starters it may just void our warranty. If you put a New or Remanufactured Valve Body into a transmission and the cooler has not been flushed properly (or not at all) replacing the valve body may not solve the problem. If you have trash and debris in your transmission it’s going to stay there until you do something about it. Valve bodies are very sensitive to debris and trash which could cause valves to stick and create more problems. You wouldn’t wash your dog in dirty bath water, so why would you put a new or remanufactured valve body back into a dirty transmission. Good question but it happens every day. Here’s a Photo from a Honda Odyssey transmission cooler that the mechanic said they flushed the cooler.