Best Answer

Hey Connie==Get a manual from a parts store on your car and it will tell you how. You may need to get a manual from MOTORLIT.COM. Good luck Joe

First buy a new thermostat, water pump and timing belt. Unsnap timing belt cover and remove top outside portion. Take off top belt pulley which is actually the Power Steering pump pulley. Note aligning mark on top timing belt pulley which matches a notch in the back of the timing belt cover. Also notice the bottom belt pulley has a notch which aligns with a protruding point on the belt cover next to the bolt where the back cover is attached. Remove the bottom belt pulley (not for the timing belt but the accessories) Try to align the top timing belt pulley which will align the notch on the accessory pulley before removing the pulley. Once the top pulley is removed you can remove the timing belt being careful to not move either base where the pulleys were attached which would mess up the timing. Remove the power steering pump (turn small nut on end of pipe into pump housing) and remove hose from other pump line. Now you can move the cover enough to remove the water line housing containing the thermostat. This should be replaced now since it is so much trouble to replace separately that everything should be done at the same time. The thermostat gasket has a slot to fit over both sides of the metal flange. The water pump is held by 3 Allen wrench bolts (metric good luck) and is also the timing belt tensioner. Install new pump and timing belt making sure marks and notches are correct and belt is tight enough using the turning of the water pump. Reassemble everything else.

User Avatar

Wiki User

2015-07-16 18:05:24
This answer is:
User Avatar
Study guides

Water TDS level

See all cards
No Reviews

Add your answer:

Earn +20 pts
Q: How do you replace the water pump on a 1990 Pontiac Le Mans?
Write your answer...
Still have questions?
magnify glass
Related questions

What are the release dates for MuscleCar - 2001 Pontiac Le Mans-Refurbishing the Frame?

MuscleCar - 2001 Pontiac Le Mans-Refurbishing the Frame was released on: USA: June 2007

How many feet long is a 1989 Pontiac le mans?

The 89' Pontiac LeMans is 12ft long

How do you replace the thermostat located on a 1992 Pontiac Le Mans?

You have to remove the timing belt cover,camshaft pulley and timing belt.Itis near the top behind the belt.

How much horse power and torque does a 1973 Pontiac le mans have?

There were several different options for engines in the '73 Le Mans...

How do you install a fuel pump into a 1993 Pontiac Le Mans?

i have a 1990 lemans and it is located under my back seat you flip up the seat bottom and there is a flap of carpet there it may be the same on yours

Were is the voltage regulator on a 1972 Pontiac LE mans?

It's inside the alternator.

Where is the location of the crankshaft timing sensor on a 1991 Pontiac Le Mans?

inside ditributer

What is the firing order for a 1988 Pontiac Le Mans?

The firing order for the 1988 Pontiac Lemans is 1-3-4-2. I hope this information to be useful to you

Name cars that begin with L?

lamborgini le mans (Pontiac) Lincoln Lafayette lancia Lexus

Where is the thermostat located on a 1988 Pontiac Le Mans?

Behind the timing belt cover just below the cam

Where is temp sensor on a 92 Pontiac la mans?

It is called a thermostat and it is near the top behind the timing belt

Which car was better the Chevrolet Nova coupe of the year 1972 or the Pontiac Le Mans coupe of the year 1972?

The Pontiac LeMans would be my choice. It is slightly larger and more luxurious. The Pontiac engine was also a better engine than the Chevy.

People also asked