I have a question about an issue that has come up with an A604 tranny. If you know about these, or know someone on this forum who does, please reply here or send me a private message, and I'll get back to you with my questions. Thanks for the help.

 

If you post your questions here, suggestions, answers, opinions, and communication will follow.

 

HI...I'm new here. I got your response, but there was no text entered. Am I missing something? Do I have to click something that I don't know about to read your response? Thanks for the help.

 

My only response was to ask your questions here on the forum. That way all of us can see them and decide if we know or think anything about them. Then any or all of us can respond if we have input.

This forum works best when we all share the questions and the responses openly. Private communications are possible, but then none of the rest of us learn along the way.

The history of each thread is then available for any of us to read when we run across a similar situation.

 

Here's a summary of the related issues...

1. The input speed senser must match the output speed sensor in voltage otherwise this would tell the computer that the clutch is slipping and go into limp mode. Best fix is replace or clean sensors or wiring to sensors. Clean sensors when changing fluids.

2. When changing fluids system must be flushed also to get out all of the fluid, a filter change will only change out half of the transmission fluids.

3. In the wiring to the tranmission computer there is a spot where the computer connects to the engine computer and the body computer, this spot causes problems when it corrodes. It should be cut and respliced to ensure a secure connection. Also make sure you battery neg wire is large enough otherwise it will not be providing enough ground to the transmission, engine, starter. Also, the alternator ground should also be tied to the body of the engine.

4. Your transmission is still good and doesn't need a rebuild. There have been several people add this bit of knowledge. If you take your transmission to a transmission guy you will be paying for a rebuild and sometimes this fails to solve the problem with the transmission in the first place. Some good pointers to remember before deciding on a rebuild is, one...that the output speed sensor is magnetized so that if you pull the speed the sensor and there is no or little metal chavings on it then you aren't burning up the gears in your transmission. This would be the only reason you would need a rebuilt, to replace gears. Other than that if you have fluid leaks out of the pump (convertor area) or cv joint bushings. Then it would be a bench rebuild, not a complete rebuild, and the master rebuild kit for this is $130.
(know if you clutch is good or not) this can be done by having the transmsision computer read for the clutch index, you don't have a problem till that number climbs up to 100 and over. You can't burn out you clutch in one day. Just like a manual clutch it takes weeks to burn that baby up. And it is a progressive thing. You will notice it slipping more and more week after week. You would do yourself a favor not to take it to the shop as soon as it starts slipping till you know if it is the clutch or not. The only way to fix clutches is a rebuild. But anything causes clutch slipping, not just worn clutches. (bad or dirty input and output speed sensors, dirty transmission fluid, bad electrical connects to and from tranmission, even problems with temp sensor on engine because the tranmission computer uses these sensors to determine how and when to engage the clutches!)

5. Last but not least the transmission computer should be reset after a transmission swap because of the clutch index, also may need reset after any tranmission failure including a transmission oil change becuase the slipping characteristics of the clutches changes. But there is no way to reset it without a transmission computer reader, I think on the newer cars use can use a obdII scanner which is only $30.

6. Atf fluid advantages over other tranmission oils is that is provides extra lubrication.

 

Hi,
Well Transmission is the way through which we are providing some things for our viewer or in simple words we can say we are providing knowledge for them.

 

I NEED SOME ASSISTANCE. Can someone please tell me the history of the A604 Tranny. Im doing a research project on it and I am looking for some info....THANKS!!!!!!!!!!!!

 

Look it up online

 

Im new to this, can someone show me how to post a new tread. How can I post a question so I can get replies.