I have 2002 Jeep Liberty (50,000 miles) that needs a timing belt change. Ten months ago I had a valve cover replacement. I was quoted $1400 labor to replace timing chain. Labor only. I have to fetch the parts. Is this a good price range?
Second, does the oil in the engine need to be drained to replace the timing belt on an engine? They said I need to include oil for the engine too.
Third, should I just look for an engine from a wrecked Jeep Liberty and replace the engine all together?
Shouldn't matter on who owned it before. What problems are you having to think you need timing chains? It is an expensive job, and one that is normally not needed unless there is an actual problem with them.
The engine has a rattling sound. The sound of a chain going round and round fast. I brought it to 2 mechanics and they both determined that it was a the timing belt. What causes the timing belt to get to the point of replacing it?
Shouldn't it matter based on the proper maintenance of the engine. If the engine was poorly maintained then internal engine parts will be prone to future problems...
Normally timing chains require no service. Timing belts require replacement due to wear and tear on the rubber belt. For the chains to be making noise, either it is a freak thing/defective part, or the engine suffered neglect and the tensioners sludged up, or the chain guides have accelerated wear.
I discovered that before I got the vehicle that the engine had suffered a considerable amount of neglect (sludge). The oil pump was probably straining a lot.
You are leaving more questions than answers. How is the oil pump "straining a lot"? What was the reason for taking it in to be looked at? What is the vehicle doing? Technically, the oil pump always strains a lot. Squishing fluid to 60psi is no easy task. A lot more info on EVERYTHING about what is going on would help a lot. Otherwise, we are merely guessing when giving you suggestions.
Okay. Spend 10 bucks on an engine stethescope. Listen to which side the noise is coming from. Pull the valve cover. Check the tension of the chain. It should be pretty darn tight. Use a breaker bar and rotate the engine using the crank/harmonic balance bolt a littel, check the tension again. It should still be pretty darn tight. Pretty darn tight is 'hard to move' but 'not impossible'. If you get some slack the chain is loose. If the chain is loose it is probably the tensioner. You will notice the looseness on the top of the chain (passenger side) not the bottom. I don't have experience with this problem on the driver side so I can't tell you what to check.
82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock