Why will a 1990 Buick LeSabre not start after removing the exhaust manifold and installing a new gas tank and fuel pump from a 1990 Chevy Corsica?
Dont laugh when i ask this but I seen it happen before, Is there gas in the tank?
The Coolant Temperature Sensor on a 1993 & 1994 Buick LeSabre is located on driver's side of the car under the throttle body, It is screwed into the lower intake manifold. You cannot see it without first removing the throttle body since it is hidden under it. An electronic plug is clipped to the the end of the CTS.
It should be located on the intake manifold by the distibutorless ignition module. On my 92 Lesabre it is located near the plugs at the back of the motor. On my 94 LeSabre it is located on the front/driver's side of the engine. There is a 4-wire connector on the top and it is mounted by two bolts on a flange. About 2" in diameter, 4" high.
The catalytic converter on a 1994 Buick LeSabre can be removed to be replaced. It cannot be removed permanently from the vehicle. Removing the catalytic converter will cause the vehicle to not run properly because there are oxygen sensors attached to it that the car needs. Also, removing the catalytic converter permanently may violate state laws against pollution in some states.
The belt tensioner on a 1993 Buick LeSabre is located below and slightly to the left of the alternator if you are facing the passenger side of the car **Note there should be a diagram somewhere in the engine compartment, if not drawing one before removing the alternator belt for any reason will save you a major headache later on. GOOD LUCK