auto repair transmission problems
I have an 88 Cadillac Deville. Transmission slips, fluid is dirty. Should I flush it?
Everyone keeps telling me the only thing I need to do is flush the transmission, but when I called the auto repair shops, two different places told me NEVER flush the transmission if there is a problem. They say that will make the problem worse. I wonder if they are just trying to get more money out of me, especially being a female, or if I they are just trying to warn me. I don't want to ruin my car......can't afford another one.....
What's the difference between flushing the transmission and just changing the fluid and filter?
Ok,
The truth is really sad.
For a transmission in a vehicle that old, you really needed to maintain it. You should change out the transmission fluid at a minimum of every other year, and I get mine completely flushed out every 5-6 years. When transmission fluid gets changed, they can either remove the pan and drain the fluid. This is called a drain and fill. Old fluid is typically left in what is known as the Torque Converter. So typically you're only changing out 60%-70% of the old fluid and mixing new fluid with what remains in the vehicle. However you can change out the transmission filter at this time.
The full flush usually has the transmission connected to a pump and resevoir where the engine is started and old fluid is pushed out and new fluid is pushed in. This typically results in removing 95% or better of the old fluid and replacing it with new fluid.
They are telling you not to change the fluid or do a flush because the sad thing is the old fluid in your transmission is what is probably holding some of those seals in place.
The reason is that the older fluid is thicker and basically burns or "clots" into place. A fluid flush now could dislodge these clots and either cause leaks where the old fluid is clotting it or cause an aneurysm. Where the clot gets free and then ends up plugging something else up.
Transmissions need to be maintained to prevent these "clots" from ever forming. Sorta like the doctor telling you not to eat fatty foods and exercise to minimize the cholestrol in your body.
I'm sorry to say that, I would check and just ensure that your fluid levels are at the proper levels now. Make sure you're checking fluid levels when warm, on a flat surface and with the engine running.
Your transmission will eventually die, so start saving up for a new one.
What they are telling you comes from their experience, and mine.
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