Q: Just had freeze plugs replaced.still leaks now looks oily. Transmission slipping at 10-20mph now

asked by on

After I had my freeze plugs replaced my jeep is leaking again. The leak is oily and my transmission is slipping between 10 and 20 mph

My car has 204000 miles.
My car has an automatic transmission.

The 4 liter engine is known for valve cover gasket, oil pan, and rear main seal leaks. A visual inspection from a top-down approach will give you an indication of the source. I use an inspection mirror to view the rear of the valve cover for any signs of oil. Then I look for the highest origin of any oil leaks. If questionable, I will have the engine washed down, U/V dye added, and then monitored with a U/V light.

The valve cover gasket is a minor replacement. The oil pan and rear main are slightly more difficult, but should be performed at the same time as this engine has a 2-piece rear main seal, which can be changed without removing the transmission.

The transmission slipping could be anything from low fluid, age, dirty fluid, or a bad torque converter. Check the fluid condition and level. The fluid should be pink and between the hashmarks on the dipstick while warm and running in park. I believe it takes Mopar +4 fluid, but double check with a parts vendor. If you want to have this diagnosed by a professional, a technician from YourMechanic can come to your home or office to diagnose your gear slipping issue and let you know what repairs are necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Just had freeze plugs replaced.still leaks now looks oily. Transmission slipping at 10-20mph now

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Engine Light came on

All of those issues will need to be addressed one-at-a-time. There could be one root problem, or several independent ones. The first step would be to scan the engine and transmission computer for codes. The codes set will give direction...

Q: 2005 jeep wrangler harmonic balenciaga replacement

Engine and transmission mounts are replaced on a mobile basis by certified mechanics dispatched by YourMechanic. The service to request is motor/transmission mount replacement. Harmonic balancers are relatively long-lived but there are a lot of variables that affect service life....

Q: Transmission 2000 Honda Accord

Hello - given your advanced mileage, it is likely the harsh 1st to 2nd shift is a worn out 2nd gear clutch pack . This clutch pack catches the worst wear and use conditions of most any component in the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...