So just the way you describe it do I have to tune the camshaft

What you are describing only occurs when the camshaft/engine timing is not correct.

When the camshaft timing is set, the #1 piston must be at TDC (top dead center), and the intake and exhaust valves are closed. Any timing marks should be aligned at this point. On a vehicle with a distributor, you would want to install it with the ignition rotor pointing at the #1 spark plug wire when the crank and camshaft are at this position.

The camshaft turns at 1/2 the speed of the crankshaft, so, if it's doing the opposite of what it should be doing, the timing is off by 1/2 turn of the camshaft, 180 degrees.

Vibration such as you describe usually is caused by one or more cylinders not working as efficiently as the others - or doing less work...

There could be many reasons for that condition - compression, valve seats, spark, camshaft(s), injector(s).
A power drop test is the best way to begin locating the trouble - by first isolating which cylinder(s) are at fault. This uses a particularly accurate tachometer and either physically or using diagnostic equipment, electronically disables the spark at each cylinder in turn. A mechanically good engine in a good state of tune will record a similar drop in revs for each cylinder...

camshaft or the camshaft sensor? there is 2 diffenrent things if is the camshaft what is your car doing? your car will die if the camsensor is bad too. please make sure what is it. Thanks

tell me some more details please-Im waiting

No it is not, however a high performance cam will make it harder to adjust for smooth idle.

Was it doing this before you tuned it up, or is it possible you have some plug wires crossed? It could be a bad camshaft, flat lobe will make it backfire, usually backfires though the carburator.

tune up wont fix it, need to have diagnosed before you have tune-up and i hope that tune up comes with plug wires for that price

Except Premier
Procedures applying to removal and installation of the auxiliary shaft drive chains are located under Auxiliary (Intermediate or Silent) Shafts Removal and Installation, later in this section.
2.5L Premier Engine (See Figures 1 through 5)

Fig. 1: To remove the timing chain, remove the timing chain case cover

Fig. 2: When removing and installing the timing chain the crankshaft and camshaft sprocket timing marks should be aligned as shown

Fig. 3: While holding the timing chain, camshaft sprocket and crankshaft sprocket aligned install them onto the engine


Fig. 4: Lock and unlock the timing chain tensioner by switching the tensioner lever, as shown


Fig. 5: To verify correct installation, turn the crankshaft until the camshaft sprocket timing mark is approximately at the one o'clock position, then count the number of chain link pins between the points shown

1. Disconnect the negative battery cable.
2. Remove the fan shroud and cooling fan, as described earlier in this section.
3. Remove the accessory drive belts. For more information, refer to .
4. Remove the water pump pulley and crankshaft vibration damper, as described earlier in this section.
5. Remove the timing case cover, as described previously in this section.

It is a good practice to either remove or cover the radiator area when performing extensive repairs to the engine to prevent accidental damage to the radiator core.

1. Rotate the crankshaft until the 0 timing mark on the crankshaft sprocket is closest to and on a center line with the timing mark on the camshaft sprocket.
2. Remove the oil slinger from the crankshaft.
3. Remove the camshaft retaining bolt and remove the sprockets and chain as an assembly.
4. If the timing chain tensioner is to be replaced, the oil pan must also be removed.

To install:

1. Turn the tensioner lever to the unlock (down) position and pull the tensioner block toward the tensioner lever to compress the spring. Hold the block and turn the tensioner lever to the lock (up) position.
2. Install the crankshaft sprocket, camshaft sprocket and timing chain together. Make sure the timing marks are aligned as indicated in Step 6 and in the accompanying illustration.
3. Install the camshaft sprocket retaining bolt and washer. Tighten the bolt to 80 ft. lbs. (108 Nm).
4. To verify correct installation of the timing chain, rotate the crankshaft until the camshaft sprocket timing mark is approximately at the 1 o'clock position. Count the number of chain link pins between the camshaft timing mark and the crankshaft timing mark, there should be 20 pins (2 per link) between the marks.
5. Make sure that the timing chain tensioner switches to the unlocked position. If the tensioner does not switch automatically unlock, switch it manually to the unlock position.
6. Install the oil slinger.
7. Install the timing case cover, as described earlier in this section.
8. Install the water pump pulley and crankshaft vibration damper, as described earlier in this section.
9. Install and properly tension the accessory drive belts. For more information, refer to .
10. Install the fan shroud and cooling fan, as described earlier in this section.
11. Connect the negative battery cable, start the engine and check for leaks.

Good luck... and remember rated this help.

it is located on top of the engine right below the air inlet tube at the base of the intake it is a black sensor on top of a silver housing where the distributor would normally be

change the crankshaft positon sensor in the rear of the engine above the oilfilter. Also check the wiring to this sensor, they have a problem shorting out. You have to change the camshaft and crankshaft sensors at the same time. Make sure you give your car a major tune up. Did you check yor starter?.........runjoe