How do i install a timing belt on a 2001 nissan quest (timing marks)

Could be a bad coil,ignition module, crankshaft sensor, distributor cap, distributor, ignition rotor or a broken timing belt. It could also be that there has been a loss of power or ground to components in the ignition system or even a bad Engine Control Module.

3 possible causes are....
1 Radiator clogged..replace
2 Water pump bad...replace (along with timing belt if it's time for one)
3 Bad electric fan motor ( or sensor that brings fan motor on ).

Here's a guide.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f802c539b

If it's the 3.0 it should be non-interference. Anything else is beyond me. I would assume a water-pump, tensioner and timing belt replacement is due. A reputable shop would be happy to perform the work, and you should end up happy with the quality of work

the timing is controlled by the engine computer. You only set the base timing at 15 degrees by loosening the distributor hold down bolt and turning the distributor until the timing light shows on the 15 degree mark on the crank pulley.

go here and read files

http://groups.yahoo.com/group/villagerquest/

go here for help

http://groups.yahoo.com/group/villagerquest/

put it at top dead center, also when you remove the cover rotate until mark on crank gear lines up with mark on oil pump housing ,it right behind the gear, also you will see notches on the cam gears and the rear cover those should also line up when crank gear is aligned, sometime marks on cams are 180 degrees off which just means crank has to be turn one more time, then double mark gears that all, good luck.

go here for expert help on Villager & Quest

http://groups.yahoo.com/group/villagerquest/



Item Part Number Description 1 — 40 Timing Chain/Belt Teeth 2 6256 Camshaft Sprocket , Front 3 — 43 Timing Chain/Belt Teeth 4 6306 Crankshaft Sprocket 5 6268 Timing Chain/Belt 6 6256 Camshaft Sprocket , Rear
Removal

1. Drain the cooling system. Refer to Section 03-03 for the procedure.
   

1. Disconnect the battery ground cable (14301) .
   

1. Remove the generator drive belt, water pump and power steering pump drive belt, and the A/C compressor drive belt (if equipped). Refer to Section 03-05 for the removal procedure.
   

1. If equipped, remove the three A/C compressor drive belt idler pulley bolts and the A/C compressor drive belt idler pulley.
   

1. Remove the upper radiator hose bracket bolt.
   

1. Loosen the two upper radiator hose clamps and remove the radiator hose bracket bolt. Remove the upper radiator hose (8260) and the upper radiator hose bracket from the vehicle.
   

1. Remove the water bypass hose (8597) from between the thermostat housing and the water hose connection (8592) .
   

1. Remove the main wiring harness from the upper engine front cover (6019) .
   

1. Remove the eight upper engine front cover bolts and the upper engine front cover .
   

1. Raise and support the vehicle.
   

1. Remove the RH front wheel and tire assembly.
   

1. Remove the four RH outer engine and transmission splash shield bolts and two screws and remove the RH outer engine and transmission splash shield (6775) .
   

1. Use Strap Wrench 303-D055 (D85L-6000-A) or equivalent to hold the water pump pulley (8509) while removing the four water pump pulley bolts.
   

1. Remove the water pump pulley from the water pump (8501) .
   

1. Remove the crankshaft pulley (6312) . Refer to the procedure in this section.
   

1. Remove the five lower engine front cover bolts and the lower engine front cover .
   
2. Ensure that the timing marks between the crankshaft sprocket (6306) and the oil pump housing line up.
   
3. NOTE: The directional arrow is necessary to ensure that the timing chain/belt (6268) can be reinstalled in the same direction.
   
4. Loosen the timing chain/belt tensioner nut.
   
5. Remove the timing chain/belt .
   
   
6. Installation
   NOTE: Ensure that the timing marks on the camshaft sprockets (6256) and the seal plate are properly aligned. Ensure that the timing marks on the crankshaft sprocket and the oil pump housing are still aligned. NOTE: A new timing chain/belt has three white timing marks that indicate the correct timing positions of the camshafts (6250) and the crankshaft (6303) . These marks will help ensure that the engine (6007) is timed properly. When the engine is properly timed each white timing mark on the timing chain/belt will be aligned with the corresponding camshaft and crankshaft timing mark on the sprocket. Because the white timing marks are not evenly spaced you will need to refer to the following illustration for proper timing chain/belt placement. There should be 40 timing belt teeth between the timing marks of the front and rear camshaft sprockets and 43 teeth between the timing mark on the front camshaft sprocket and the timing mark on the crankshaft sprocket .
   
   NOTE: Verify that the camshaft timing marks are aligned with the timing marks on the seal plate, and that the crankshaft sprocket timing mark is aligned with the timing mark on the oil pump (6600) .
   
   Install the timing chain/belt starting at the crankshaft sprocket and moving around to the camshaft sprocket following a counterclockwise path. Do not allow any slack in the timing chain/belt between the timing sprockets. After all of the timing marks are matched up with the timing chain/belt installed, slip the timing chain/belt onto the timing chain/belt tensioner .
   
   
   
   
   
   

Rigoe the points for the timing belt are usually located on the sprokets in conection with marks or dots on the engine block some where around the sprockets that hold the timing belt. Remenber to bring the piston number one to TDC (top dead center), this means you have to locate the piston number one, take the spark plug out and turn the cranshaft (the one with the pulley) by hand until the piston is all the way up. On the distributor the rotor should point to the spark-plug wire number one (you can make a mark outside of the distributor cap where the number one spark-plug wire is pointing so when you take the cap off you can see if the rotor is pointing the same direction). With the timing belt cover off you are going to be able to aling all this points at the exact locacation all together. So we have: Piston number one at TDC, The rotor(enside the distributor cap) pointing to the number one spark-plug wire, and the mark of the sprockets pointing the marks of the engine block( litle dot or dash). If you get all this right you are have done a good job and ready to make a trip you can get all this just by turning the cranshaft by hand with a rachet and a big socket. God bless you.

i have a 2002 p t cruiser how hard is it to change the timeing belt