At the specified time intervals, Haynes reccomends 30, miles or 2 years, the transmission fluid should be drained and replaced. Since the fluid will remain hot for hours after driving, perform this procedure only after the engine has cooled down completely. Before beginning work, purchase the 4 quarts of the specified transmission fluid and a new filter. Other tools necessary for this job include jackstands to support the vehicle in a raised position, a drain pan capable of holding at least eight pints, newspapers and clean rags.
Raise the vehicle with a proper floor jack not the spare tire jack and support it securely on jack stands. Note: On the Ultradrive 42RLE transmission, take notice of the pan bolt that has a sealant patch on it.
Set aside this bolt for reuse and mark the bolt hole that you removed it from, typically the second from the front on the left side. The automatic transmission fluid filter on earlier 3 and 4-speed models is held in place by three screws.
On later 5-speed NAG1 models the filter pulls straight out of the valve body. Note: To check the transmission fluid level on and later models with the NAG1 transmission, and models with the 42RLE transmission but no dipstick, a special dipstick part no.
It can be purchased from many auto parts stores, or online. If a scan tool is unavailable, an infrared heat gun pointed at the transmission fluid pan can give the approximate temperature. The fluid level should be measured with it between 80 and degrees Fahrenheit see charts.
On models with a dipstick, it will be near the firewall on the driver's side. On models without a dipstick, remove this cap from the filler tube and check the fluid level with tool no. Automatic transmission fluid level-to-temperature chart - later models with Ultradrive 42RLE 4-speed automatic transmission and no dipstick. Automatic transmission fluid level-to-temperature chart - and up 5-speed NAG1 automatic transmission. This video is a general overview of changing the transmission fluid on the typical vehicle.
Much of it applies to the Jeep Wrangler, no matter if you have a 3, 4 or 5-speed automatic transmission, but it is meant merely as a supplement to the above instructions. Go to front page. Search results Search Haynes. Year Year Make Make. Model Model. With a drain pan in place, remove the rear and side transmission pan mounting bolts.
Loosen the front pan bolts approximately one turn and fluid should start to drain from the rear of the pan If the pan does not loosen and fluid does not come out, carefully pry the transmission pan loose with a putty knife. If the fluid is at the correct level, you should be able to touch it with your pinky. If your transmission is low on fluid, you need to add more. New transmission fluid is available at any auto parts store.
If your transmission is extremely low on fluid or completely out, it needs to be serviced immediately. A transmission service technician will drain and replace the transmission fluid. Erin Stewart is a professional editor and copywriter who has served as a newspaper reporter, designer, and news editor, and currently works as part of a dynamic marketing communications team.
Step 1 Crawl under your Jeep Wrangler and locate the transmission. Step 2 Choose the open-end box wrench that fits that bolt and take the bolt out. Step 3 After you remove the bolt, fluid may come out of the hole where the bolt was located. Step 4 If no fluid comes out after you take out the bolt, put your pinky finger in the hole and extend it downward. Step 5 If your transmission is low on fluid, you need to add more.
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