Water Pump: Service and Repair

1. Disconnect battery ground cable and drain cooling system.
2. Remove drive belts and disconnect radiator hoses and heater hoses from pump.
3. Remove water pump pulley attaching bolts. The long bolt is accessed through hole in body side rail. Remove pump pulley.
4. Remove water pump attaching bolts and the water pump.
5. Reverse procedure to install.

Fig. 26 Exploded view of V6-231 (3.8L) engine (Part 1 of 2). 1988 models:

Fig. 27 Exploded view of V6-231 (3.8L) engine (Part 2 of 2). 1988 models:

1988 V6 3800 ENGINE
The 1988 V6-231/3.8L 3800 (90° arrangement) series engine, Figs. 26 and 27, is a modified version of previous models. This engine incorporates Sequential Port Fuel Injection with Electronic Mass Air Flow measurement. The cylinder block has been lengthened, allowing the connecting rods to be positioned in the center line of the bore and on the center line of the pistons. This improvement allows the use of new low tension compression rings, which results in improved fuel economy. The V6 3800 incorporates a balance shaft which is gear driven from the camshaft sprocket and counter-rotates at engine speed to eliminate first order primary imbalance.