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In some cases, owners of 2000 – 2002 model year Celica GTS vehicles equipped with the 2ZZ–GE engine may complain of an intermittent slight loss of power and/or variable lift function at engine speeds over 6,000 rpm under high load. This can be caused if the bolt securing the rocker shaft separates, allowing the shaft to rotate in its bore. This rotation, when it occurs, can cause misalignment of the oil feed passages to the rocker shafts, resulting in a lack of variable lift operation and low power at higher engine rpm. Repair Procedure 1. Remove Valve Cover A. Disconnect the negative and then the positive battery terminals. B. Remove the battery tie–down bracket and battery. C. Remove the 4 bolts and No. 2 cylinder head cover. (Figure 1.) D. Remove the ignition coils. (Figure 2.) E. Remove the wiring harness and protector from cylinder head cover. (Figure 3.) F. Disconnect the 2 PCV hoses from the cylinder head cover. (Figure 4.) G. Remove drive belt. a. Turn the drive belt tensioner slowly clockwise and loosen it. Then, remove the drive belt and replace the drive belt tensioner slowly and carefully. (Figure 5.) H. Remove the 2 nuts, 1 bolt and disconnect the No. 3 ventilation hose from the No. 1 ventilation pipe. (Figure 6.) I. Remove the No. 1 ventilation pipe and gasket. J. Remove the 9 bolts, pull back the wire harness protector, and remove the cylinder head cover and gasket. (Figure 7.) K. Remove the O–ring from the cylinder head cover oil supply pipe. (Figure 8.) 2. Set No. 1 cylinder to TDC/compression. A. Turn the crankshaft pulley, and align its groove with timing mark “0” of the timing chain cover. (Figure 9.) B. Check that the point marks of the camshaft timing sprockets are in a straight line on the timing chain cover surface with the exhaust cam dot set one tooth above as shown in Figure 10. If not, turn the crankshaft one revolution (360°) and align the marks as explained above.

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1. Remove upper intake manifold. 2. Remove cylinder head covers, crankshaft damper, and timing chain cover. CAUTION: When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve and/or piston damage. Fig. 70 3. Align crankshaft sprocket timing mark to mark on oil pump housing (Fig. 70). The mark on oil pump housing is 60° ATDC of #1 cylinder. CAUTION: When the timing chain is removed and the cylinder heads are still installed, DO NOT rotate the camshafts or crankshaft without first locating the proper crankshaft position. Failure to do so will result in valve and/or piston damage. 2000 Dodge Intrepid V6-2.7L VIN R Fig. 74 4. Remove primary timing chain tensioner from right cylinder head (Fig. 74). 5. Remove camshaft position sensor from left cylinder head (Fig. 69).

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TIMING CHAIN AND SPROCKETS Precaution: Timing Chain Replacement CHAIN GUIDES AND TENSIONER ARMS: Replace these parts if grooving in plastic face is more than 1 mm (0.039 inch) deep. If plastic face is severely grooved or melted, the tensioner lube jet may be clogged. The tensioner should be replaced. REMOVAL 1. Disconnect negative cable from battery. 2. Drain cooling system. 3. Remove right and left cylinder head covers. 4. Remove radiator fan shroud. on timing chain cover (Fig. 132) (# 1 cylinder exhaust stroke) and the camshaft sprocket “V8″ marks are at the 12 o’clock position (Fig. 133). 6. Remove power steering pump. 7. Remove access plugs (2) from left and right cylinder heads for access to chain guide fasteners (Fig. 134). 8. Remove the oil fill housing to gain access to the right side tensioner arm fastener. 9. Remove crankshaft damper and timing chain cover.

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1. Loosen the water pump pulley set bolts.2. Remove the drive belt adjusting bolt, and remove the drive 3. Remove the water pump pulley from the water pump.4. Remove the crankshaft pulley set bolt.5. Using SST (09213-31021), remove the crankshaft pulley.Remove the timing chain cover bolts and nuts as shown in the figure.Using a plastic faced hammer, loosen the timing chain cover and remove it.Remove timing chain tensioner and vibration damper. Remove the camshaft sprocket set bolt.