Question about 2004 Ford Explorer
My 2004 Ford Explorer started making a knocking noise all of a sudden but the car isn't running any differently the car runs fine and sometimes the noise will stop for a 5 or 10 minutes and then come back again. The car never over heated or was low on oil. I took it to a mechanic and he says I need a new engine I just dont understand how this can be especially since there doesn't seem to be anything wrong with the car except for this knocking noise. All fluid levels are good, no over heating, nothing but the knocking noise one mechanic said I blew the engine but the car runs fine ?? another said it could be the timing chain tensioners I dont know what to do?
Posted by Anonymous on
Take it to an accredited service shop that has experience on your make of engine and have a proper diagnosis done and quote
it is possible that there is a spinning main bearing and the test is a oil pressure test using a mechanical gauge
some times it spins , low oil pressure -knocking other times it stops and the oil pressure goes back up , knocking stops
should I be correct , normally it can be repaired in car by removing the sump and replacing that bearing shell, of the shaft is not damaged
i would steer away from a new engine or suggestions of a blown engine but it could be serious
Posted on Apr 04, 2017
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Posted on Jan 02, 2017
The blend door (mode door ) is a very common issue there is even an associated TSB t(technical service bulletin) it has to do with the blend door becoming warped and binding the accuator. In an opened or semi-closed position
Posted on Nov 19, 2008
1997-2000 EXPLORER, MOUNTAINEER
ISSUE: A "knocking" noise at start up for up to 2 minutes from the left hand front chain cassette area may occur on some vehicles. After engine shutdown, the tensioner oil supply gallery empties. The noise may be due to air entering the left hand tensioner when the engine is restarted.
ACTION: Replace the left hand camshaft tensioner with a revised Tensioner Kit. Refer to the Instruction Sheet within the Tensioner Kit for service procedure details.
WARNING: THE XU2Z-6K254-AA TENSIONER KIT IS FOR INSTALLATION ON THE LEFT SIDE OF THE ENGINE ONLY. INSTALLATION OF THIS KIT ON THE RIGHT SIDE OF THE ENGINE MAY RESULT IN ENGINE FAILURE. IF A TENSIONER IS NEEDED FOR THE RIGHT SIDE OF THE ENGINE, USE KIT XU3Z-6K254-BA.
PART NUMBER PART NAME XU2Z-6K254-AA Tensioner Kit - Left Side XU3Z-6K254-BA Tensioner Kit - Right Side
SECTION 303-01B: Engine — 4.0L SOHC 1998 Explorer/Mountaineer Workshop Manual
IN-VEHICLE REPAIR Timing Drive Components —LH Hydraulic Chain Tensioner Removal and Installation
Disconnect the LH fuel vapor management valve (VMV) hose.
Disconnect the RH VMV hose and remove the upper intake manifold.
To install, reverse the removal procedure.
Posted on May 03, 2009
SOURCE: 97 explorer engine taps
what this sounds like is that your engine is starving for oil and the tapping noise is yuour rocker arms. this could be due to sludge build up on the intake screen of your oil pump or the pump itself is weak and no longer is providing the needed oil pressure. another place for sludge to build up is the valve covers and until the engine heats up very little oil is circulating to the push rod,rocker arms, and lifters. my suggestion is to clean the valve covers, drop the oil pan and remove the pump to look at the gears to see if there are missing teeth. also clean the screen of the pick up tube. replace the oil filter and put in new oil also use lucas additive this will do a good job of keeping the sludge build up to almost nill. if the problem persists then i would say that one or more of your hydraulic liftyers is weak and then they will need replacing.
Posted on May 13, 2009
If your check engine light came on when the problem occurred, then you need to have the diagnostic codes read. I am cheap, so I would suggest going to an Advance or Auto Zone, they will read the codes and interpret them for you in hopes of selling you the part that will fix it. Good Luck. I hope you find this very helpful!
Posted on Nov 22, 2009
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