Replaced bad AC unit with floater pully, now no heat, overheating
1996 Regal 3.8L
1) Replaced leaking coolant bypass tube (elbow from belt tensioner to engine block) 2) Replaced bad AC compressor with a basic floater pulley. 3) Replaced serpentine belt. 4) Refilled / topped off antifreeze with 50/50.
Car now purrs like a kitty. However I now have no heat inside the car. Blower works, but I only get cold air on any/all settings. Test drove the car, and after aprox 1 mile car came close to over heating. I parked it, opened the hood with it running and noticed the radiator fans are not turning on.
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Re: Replaced bad AC unit with floater pully, now no heat,...
Most likely when you replaced coolant line and refilled rad the system was not bled properly.
fill the system with 50/50 again and top up the reservoir. run the engine to 2000 rpm and look at temp gauge . it should rise to middle and drop to low this means t stat opend and air is out now let engine idle and top up coolant. good luck
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There is 1 or 2 elbows (plastic from factory) that connect the coolant channels from the engine block to the tensioner pulley housing. Mine only had one (in front, visible and disintegrated) and in the back, the pulley housing had a nipple (cast) that had o rings and was inserted into the back coolant hole in the block.
You need to make sure to remove all bolts holding the tensioner housing on.
Swivel and/or wiggle the pulley housing off very slowly so as not to break that nipple off of the pulley housing.
The parts stores only sell the elbows in 2 packs, but they do have metal instead of the original plastic.
Take look down by the belt tensioner. There are two by-pass tubes that run from the tensioner to the engine. The by-pass elbows have rubber seals on them and after the coolant flush may have damaged or ruined the seals. The only other option is the coolant is going into the engine oil or transmission oil. Check both oils and see if they look "milky" Good luck.
One or several things are common causes for over heating
here are the ones that are basic cooling system issues.
1-low coolant level
2-thermostat needs replaced
3-water pump needs replaced
5-belt tensioner weak
b-bad temp sensor
c- wiring/connector problem
i have checked with a friend in Kenya and if you need to, you can make up an adjusting bracket for the alternator(for belt adjustment)
and remove the ac.NO PROBLEM.as when they go wrong they also take them off, when fitted. hey guys,this is a world market,its not just the good old U.S.A.that has electricity.......mind you,only 2/3rds does.....
YOU NEED TO REPLACE THE BELT TENSIONER.
IF YOU BUY THE CARTER BELT TENSIONER AT ADVANCED AUTO, IT COMES WITH: A PLASTIC ELBOW WITH O RINGS, TENSIONER, PULLEY, NEW O RING WHERE THE BELT TENSIONER MATES TO THE ENGINE BLOCK AND NEW O RINGS FOR THE INLET AND OUTLET CONNECTIONS ON THE BELT TENSIONER TO THE HEATER CORE (COST $72).
IF YOU DON'T REPLACE ALL THE ABOVE O RINGS THEN YOU CAN EXPECT MORE LEAKS.
IN ORDER TO REPLACE THE PLASTIC ELBOW YOU MUST REMOVE THE BELT TENSIONER ANYWAY. IF THE BELT HAS SEVERE CRACKS REPLACE IT ALSO.
-DRAIN ANTIFREEZ AND DISCARD
-REMOVE BELT TENSIONER
-REMOVE PLASTIC ELBOW (DO NOT ALLOW BROKEN PIECES PLASTIC OR DIRT TO GET INSIDE THE ENGINE WATER CAVITIES.
-CLEAN ALL CONNECTION WHERE O RING WILL MATE.
-TO REASSEMBLE GO IN REVERS ORDER
-REFILL THE RADIATOR WITH COOLENT 50% MIX USE THE 5 YR GUARANTEE TYPE.
-MAKE SURE THE COOLENT RESERVIOR IS
FILLED TO THE HOT LEVEL MARK.
-RUN THE ENGINE UNTILE IT IT REACHES THE 1/4 % TEMP MARK ON THE TEMPERATURE GAUGE THEN TURN THE ENGINE OFF AND OPEN THE BLEED SCREW ON TOP OF THE THERMOSTAT HOUSING.
ALLOW THE AIR TO EVACUATE, YOU WILL SEE COOLENT COME OUT THEN CLOSE THE BLEED SCREW.
-BE VERY CAREFUL WHEN YOU OPEN THE RADIATOR TO REFILL TO THE TOP.
-REPEAT THIS ONE MORE TIME.
-RUN THE ENGINE AND KEEP YOUR EYE ON THE TEMPERATURE GAUGE' IF THE TEMPERATURE GOES BEYOND THE 1/2% MARK, SHUT DOWN THE ENGINE QUICKLEY AND LET THE ENGINE COOL.
THIS MAY TAKE HOURS TO COOL DOWN BUT THE COOLING SYSTEM WILL TURN FROM PRESSURIZED TO VACUUM AND DRAW COOLENT FROM THE RESERVOIR TO REFILL THE SYSTEM.
YOU WILL NOTICE THE LEVEL DROP IN THE RESERVOIR.