My daughter has 1993 Buick Century with a bad A/C unit. I do not want to repair the A/C unit and would like to by-pass it altogether. I am not sure where the belt tensioning unit is or if the right belt is available. this is a 6 cyl, with power everthing.
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Re: By-Pass A/C Pump with new Serp. Fan Belt
The belt tensioner has a pulley that is in-line with the rest of the pulleys, but it is a small one. it has a little bit of an arm that mounts either to the engine or a bracket to the engine. it puts a down force on the belt keeping it tight. when you go to remove the old belt, you will have to use either a wrench or ratchet to pull up on the tensioner (do not let the tensioner snap back into place). install in reverse order. go to the local parts store and take the old belt(if it still exists) and tell them what the problem is and how you plan to fix it with a shorter belt taking the a/c compressor out of play. and go from there.
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this may have already been posted.... but second time wont hurt. watr pmps suck. dis. neg batt. cable. drain coolant. support the engine with somethin. remove rt. engine mount. loosten ur pump bolts only. remove ur serp. belt but make sure u have the diagram to replace it. unfasten idler n remove engine brace. remove pump with pulley. seperate. replace pump. replace the other junk. replace coolant. reconnect batt. run engine.
how are you determing there is no voltage? does the fuse have voltage? the gray wire is the power for the fuel pump. can you by-pass the relay and still no power? have you checked for voltage at the pump with relay by- passed? I suspect the pump is bad.
You do not mention the fan. Is your fan working? Start the engine and turn on the A/C this should force the fan on. If it does come on with the A/c you will have to see if it comes on during normal operation ( start the engine w/o A/c and let it run until the temp gage gets into the red) If it does not come on by itself you have a bad block temp sensor / or fan relay circuit.. Hope this helps Fix Ya up. If you have to in case of emergency, straight wire the fan from the battery. It is a two wire motor. One positive and one negative wire (12vdc). Watch the fan blades for rotation and wiring polarity, the fan pulls thru the rad.
Your car does not have a timing belt,it has a timing chain.To remove the cover you have to remove the power steering pump and set aside,water pump,crank sensor,and crankshaft pulley.You might possibly have to remove the oil pan also.Hope this helps.Good luck.
You say belt driver? The belt runs on a series of pullys, there should be a pic./diagram on the radiator support that shows the routing of the belt. simply take the belt off and check each pully( they will either drive the belt or be idlers/tension pullys)to see which one has any "side to side" motion. If it is on a "driver" you are looking at replacing that part(water pump,power steering pump. etc.), as the real problem will be a bad bearing in that unit.
If the comprtessor itself is bad, you can unplug the activation wire located up fron of the unit, this will allow the clutch bearing to turn separate of the compressor. If the clutch bearing is the cause you will have a problem, these belt systems are so crazy that it would be almost impossible to select a belt to do what you want.
the "serp" belt is self-adjusted by a spring loaded tensioner pulley. the proper size wrench or a 3/8" square drive inserted in the tensioner and rotated will release the tension to allow the belt to come off. reverse order to install. DRAW A PICTURE OF THE ROUTING OF THE BELT AROUND THE PULLEYS BEFORE REMOVING CURRENT BELT!!