Skip the auto shop - Our mechanics make house calls

Q: Hydraulic problem with engine lifters knocking.

asked by on

Engine lifters knocking. Difficult to Steer. Transmission seems to be slipping but Could be differential cause when car finally engages it makes a clunking noise that feels like its right under my feet. I know car does have almost 600k miles on it but except for the steering difficulty which I think had other issues due to a delayed much needed tie rod/ball joint replacement. Passenger side has been done but now driver side lower ball needs so bad u can actually see wheel leaning. But the lifter tranny and differential problems just started all within about a month of each other. And just yesterday it now has problems with heat. Correct me if I'm wrong but all those things use hydraulic systems right. Oh and of course it has oil and Trans and power steering fluid and antifreeze in it just in case u r wondering
For husbands car - 2004 Lincoln town car not the g35 in my profile My car has 600000 miles.
My car has an automatic transmission.

Hi there. If the lifters are indeed tapping, then they are probably sticking. Try putting one quart of transmission fluid in the engine and run the engine for 15 minutes at 3,000 rpm. This will thin out the original oil and make it clean up the sticking lifters. Then drain the oil and replace the filter with a new filter and new oil. Start the engine and see if the noise has went away. If the noise is still there, then the lifters will need to be replaced. As for the clunking sound, that is not the transmission nor the differential, but rather the front universal joint that is making the noise. With the brakes applied and and parking brake on, put the transmission in reverse and then in drive and back to reverse. Do this step about 3 to 4 times and see if the noise is occurring in both directions. If it is, then the universal joint bearings are burned up and needs replaced. I recommend replacing all of the universal joints on the drive shaft for best performance. If you need further assistance with your engine making a noise and the clunking noise under the vehicle, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

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: Ticking sound from engine

Some ticking noises can be normal. The fuel injectors do make a ticking noise as part of their normal operation and depending on the vehicle can be heard louder than usual. I would ask for help from one of the...

Q: My 1999 Buick Regal will go into reverse and move, but when I put it into drive it just revs up and won't move.

Hi there. Check the transmission fluid and see if its low or dark. If the fluid is full and red in color, then the transmission is slipping. I recommend seeking out a professional, such as one from Your Mechanic, to...

Q: While driving, car jumps into lower gears unexpectedly almost coming to a stop. Then the car jumps back into higher gear at random intervals.

Hi there. Sounds like the kick down solenoid is sticking and not functioning correctly. The kick down solenoid make the circuit within the transmission valve body (transmission controller) to down shift when under heavy acceleration to allow a lower gear...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...