How to Replace the Timing Chain on a 2000 Mustang GTby Jessica Jones; Updated November 07, 2017
Items you will need
Right and left timing chains (4.6L SOHC engine)
Camshaft positioning tool adapters T92P-6256-A
Camshaft positioning tool T91P-6256-A
The 2000 Ford Mustang GT has a 4.6L SOHC (single overhead cam) engine that requires two timing chains to run efficiently. One of the most difficult parts to replacing a timing chain is physically reaching it. You will have to remove or disconnect other engine and under-the-hood parts to reach the timing chains, which can be time consuming. But once you reach the chains, both are easy to replace.
Purchase right and left timing chains, camshaft positioning tool adapters and a camshaft positioning tool specifically for the 2000 Ford Mustang GT from an auto parts store or online. Drain the cooling system and oil before removing or disconnecting tubes and other components to avoid creating a messy work environment. Catch cooling system fluids and oil using drip pans.
Lift the hood and disconnect the negative battery cable. Locate and disconnect or remove the following to reach the front cover that covers the timing chains: cooling fan and shroud, water pump pulley, power steering pump and reservoir, oil pan, crankshaft pulley, front crankshaft seal, valve covers, idler pulley, crankshaft position (CKP) sensor connector, camshaft position (CMP) sensor connector and CKP sensor pulse wheel. Refer to your owner's or vehicle service manual to locate these parts. Try to keep all parts and their components separated so you can easily reattach after installing new timing chains.
Locate the crankshaft and rotate so the No. 1 cylinder sits at Top Dead Center (TDC).
Insert the Camshaft Positioning Tool Adaptors and the Camshaft Positioning Tool into the flats of the camshaft.
Loosen and remove the right and left timing chain tensioners, tensioner arms, chain guides, old timing chains and sprockets. Keep parts separate for easy reattachment.
Reconnect the timing chain guides using a ratchet or torque wrench. Tighten timing chain guide bolts to 71 to 106 inch-pounds (8 to 12 Nm). Reattach camshaft sprockets, but do not tighten the bolts. Reattach the crankshaft sprockets. Attach the new left timing chain by matching up the timing marks found on the chain and on the crankshaft and camshaft sprockets. Attach the new right timing chain by matching up the timing marks found on the chain and on the crankshaft and camshaft sprockets.
Pinch the timing chain tensioners using a ratchet and insert locking pins into the holes at the top of the tensioners. The ratchet should be flush with the tensioner body face. Reconnect or install tensioner arms and tensioners. Tighten tensioner mounting bolts using a torque wrench to 15 to 22 foot-pounds (20 to 30 Nm). Attach the crankshaft holding tool to the crankshaft. Remove the locking pins.
Reduce slack from the timing chains using a C-clamp. Place the C-clamp on the tensioner arm and turn until the timing chain is taut, but not too tight. Use a torque wrench to tighten the camshaft sprocket bolts to 81 to 95 foot-pounds (110 to 130 Nm). Remove the crankshaft holding tool, camshaft positioning tool and adaptors and the C-clamp.
Reattach the CKP sensor wheel. Replace the front cover and tighten bolts using to torque wrench to 15 to 22 foot-pounds (20 to 30 Nm). Reattach the CKP sensor connector, CMP sensor connector, idler pulley, valve covers, front crankshaft seal and the oil pan.
Reattach the crankshaft pulley and tighten bolts using a torque wrench to 66 foot-pounds (90Nm). Then loosen the bolt with one turn and tighten again to 36 foot-pounds (50Nm) plus 90 degrees. Reconnect the power steering pump and reservoir, water pump pulley, accessory drive belt, cooling fan and shroud and the negative battery cable.
Add fresh oil to the crankcase. Start the engine to determine if it is running correctly.
If the timing chain replacement kit does not include locking pins, you may use a paper clip instead.
Do not attempt to remove engine or other car parts until the engine has completely cooled. Failure to do so may cause injury. Do not move crankshafts or camshafts after removing the timing chains as this could engine piston or valve damage.