How do you know transmission return line?

Expert Reply: The surest way to find the return line in a transmission cooler system is simply to run the cold engine for about 15-seconds while it is in gear. Then immediately feel the two transmission lines.

Which transmission line is return on a 4L60E?

the top radiator line goes back to the trans, it is the return.

What happens if you hook transmission lines up backwards?

If you had it reversed, the pump would be trying topush fluid through the bottom of the cooler, up through the cooler, out the top into the bottom of the rad, and up through the rad to the top. More weight to push.

Which line is the return line on a C4 transmission?

The rear line is the return line on a C4 transmission like what you have in your 1983 Ford Mustang.

How do you know if your transmission line is bad?

10 Symptoms of a Bad Transmission

  1. Lack of Response. Hesitation, or outright refusal, to shift into the proper gear is a telltale sign of transmission trouble. …
  2. Odd Sounds. …
  3. Leaking Fluid. …
  4. Grinding, Jerking, or Shaking. …
  5. Burning Smell. …
  6. Won’t Go into Gear. …
  7. Service Engine Soon. …
  8. Noisy Transmission in Neutral.
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Can I use rubber hose for transmission cooling lines?

You can use rubber hose, but make sure it’s transmission cooler line rated. The pressure is quite low (12-15 psi). Double clamp it or use FI type clamps instead of the worm-drive style.

Where are transmission cooler lines?

Remove the two transmission cooler lines from the bottom of the radiator. These two lines can be accessed either from underneath the hood or underneath the vehicle. Use the flare nut wrench to remove the lines in the same manner used to remove the lines from the transmission.

Are transmission cooler lines directional?

Can Transmission Fluid Flow Through Either Direction on a Transmission Cooler. Helpful Expert Reply: … The cooler can have fluid flow in either direction through it.

Can a transmission cooler be too big?

Too big could be a concern if mounted in the front of the rad creating a loss of air flow to keep the engine cooled . Years ago , GM released a TSB about overcooling the transmission in cold climates . Transmission fluid would actually turn to somewhat of a gel .

How much does it cost to fix a transmission line?

Like all parts of an engine, transmission cooling lines can wear out. If they break or develop a leak, you will lose transmission fluid, leaving your car vulnerable. Thankfully this is a fairly simple fix, and most transmission line repairs cost between $100 and $500 dollars.

What happens when transmission lines leak?

While it is not especially dangerous to continue driving with a leaking transmission fluid, it can cause catastrophic damage to your engine. As soon as you notice your car is leaking transmission fluid, you should seek to contact a certified mechanic to have your transmission fluid serviced.

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What happens when your transmission line breaks?

If your car’s transmission lines are damaged, they will leak, and that can lead to serious trouble if you don’t notice your car bleeding transmission fluid. … Your transmission is overheating, or you notice an unpleasant burning smell.