Best answer: How do you know if your transmission cooler is bad?

How do you know if you need a transmission cooler?

You hear odd noises coming from the transmission: Your transmission may have difficulty shifting between gears, or there may be clunking or grinding noises during shifts. This can indicate transmission fluid loss, high internal transmission temperatures, or both, which can be caused by a bad transmission cooler.

How much does a transmission cooler cost?

You will pay somewhere between $100 and $450 for a transmission cooler line replacement. The labor should be between $60 and $300, while parts can cost you anywhere from $40-$160.

Should I replace transmission cooler?

Coolant contamination of the transmission fluid will require the replacement of the radiator and any other external transmission coolers. Failure to properly hot flush, or replace where necessary, the transmission cooler and cooler lines will cause the replacement transmission to fail and void your warranty.

What fluid goes through a transmission cooler?

Transmission oil can reach extremely high temperatures during operation, and this fluid can be cooled down with an external oil radiator. Some vehicles manufactured after 1975 will have transmission coolers built into the car’s radiator, as will most trucks designed for towing.

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Can I drive my car with a transmission 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.

How long does it take to replace transmission cooler?

How Long Does Cooling Line Replacement Take? Repairing the cooling line for your transmission can take quite a bit of time. You can expect to leave your vehicle at the repair shop for a day or two for this repair.

How long does it take to replace a transmission oil cooler?

The problem of transmission overheating can be resolved by installing an auxiliary transmission oil cooler. As a DIY project, you’ll pay between $30 and $60 for the oil cooler and spend 1 1/2 to 2 hours on installation. You can have a local transmission shop install a transmission oil cooler in your vehicle.

Can I bypass the radiator transmission cooler?

Expert Reply: I verified with my contact at Derale that the Derale Hyper-Cool Transmission Cooler, # D15960, will work to bypass your radiator and cool your transmission fluid. … If you choose to mount the cooler further away from the radiator, then you will likely need an additional length of hose.

What is a dangerous transmission temp?

#1 Cause of Failure



The optimal temperature range for transmission fluid is 175 to 220 degrees. Above that, for every 20 degrees bad things happen, starting with formation of varnish at 240 degrees, followed by seals hardening, plates slipping, seals and clutches burn out, carbon is formed, and, ultimately, failure.

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