Your question: How do transmission cooler lines work?

What runs through transmission cooler lines?

Fluid heated by the transmission, engine, or power steering pump flows to the cooler. The air moving over the fins of the cooler cools the fluid, which is then routed back to the transmission, engine or power steering pump in a continuous loop through the return line.

Does it matter which transmission cooler line goes where?

Generally the higher line on the radiator has fluid going INTO the transmission and the lower one goes back to the transmission, so the higher line has fluid coming out of it and the lower line sucks it back into the transmission.

Are transmission cooler lines high pressure?

Its NOT only pressure you have to worry about, its also compatibility with the trans fluid. NOT aware of the pressures being any higher than other transmissions, so if you use “Transmission Cooler Hose” you should be fine.

What happens if you hook up transmission cooler lines 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.

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What happens if transmission cooler line breaks?

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.

Can you use rubber hose for transmission cooler 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.

Which way do the transmission lines go?

The top hose from the transmission cooler goes to the top pass through nipple to the transmission and the bottom hose from the transmission cooler goes to the bottom pass through nipple into the bottom of the radiator.

What PSI is transmission cooler lines?

its about 20 pounds at most , if you do use rubber line make sure its for powersteering/transmission as regular rubber hose will soften and fail from the fluid type not the pressure , but like you I found the hard way that if a little of the line develops pinholes the whole line is shot , I replaced mine with stainless …

How much pressure goes through a transmission line?

Do transmission lines have pressure? there is at idle between 20-50 psi but during use pressures in transmission lines can reach 100 psi or more. if you are going to use rubber lines be sure to use barbed fittings so the hose does not blow off.

Why do transmission cooler lines leak?

Transmission cooling lines leaking means either low-level of fluid or interrupted flow in the transmission. In both cases, the result is an overheated transmission that may stop functioning if the condition persists. Sometimes, it is difficult to spot the leak at the initial stage.

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Are transmission coolers directional?

The driver side of the radiator based cooler is connected to the front port on the tranny. The rear port on the tranny goes into the secondary cooler which then feeds into the driver side of the radiator based cooler. So, something is backwards.

Which line is the return line on a 4l80e transmission?

Early model return line is in the lower front.

Which line is the return line on a 4l60e transmission?

The 4l60e top port is the return line, the bottom port is the pressure line. The bottom pressure port on the tranny should be hooked to the top port on your radiator. The bottom port on your radiator is the return and should be hooked to the top port on your tranny.