Question about Cadillac Catera

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My car is leaking coolant. Also after it runs for awhile the idle gets low and then shuts off. Sometimes it cranks back on but shuts off again until it cools. Whats the problem?

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My 2001 catera just had the same problem i had the crank sensor replaced car wont die so far no problems starting but it has a antifreeze leak in the bottom seal of the engine. I have heard this is due to the dexcool that the manufacture decided was better than reg antifreeze and the repair bill for the labor is crazy still havent changed the bottom seal yet

Posted on Jan 01, 2010

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Souds like it's way low on coolant. The heater will blow cold air when the cooling system is so low that there is no water (coolant) running through the heater core. Then the thermostat opens, it trys to be normal but the system is low so it gets too hot in just a few minutes. If its that low, there must be a leak somwhere.

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IT KEEPS OVERHEATING


REPLACE THE THERMOSTAT AND RADIATOR PRESSURE CAP.IF COOLANT LOW, ADD MORE COOLANT THROUGH COOLANT OVERFLOW UNTIL COOLANT LEVEL IN THE COOLANT OVERFLOW STAY AT FULL COLD MARK.REASON POUR COOLANT THROUGH COOLANT OVERFLOW MOST GM CARS DONT HAVE RADIATOR CAP.WHEN YOU GET COOLANT LEVEL OKAY, CRANK CAR LET IT IDLE UNTIL ENGINE GET HOT BUILD UP PRESSURE THEN TURN OFF CAR.CHECK FOR COOLANTS LEAKS AT THE RADIATOR HOSES,CHECK FOR LEAKS AT THE RADIATOR, CHECK FOR LEAKS AT WATER PUMP WEEP HOLE IF YOU SEE COOLANT LEAKING FROM WEEP HOLE REPLACE WATER PUMP. IF CAR OVERHEATING WHILE IDLING YOUR COOLING FANS NOT WORKING CHECK COOLING FANS FUSE AND RELAYS.IF FUSE AND RELAYS OKAY THE ENGINECOOLANT TEMPERATURE SENSOR BAD.

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ADD COOLANT IN THE COOLANT OVERFLOW JUG UNTIL COOLANT LEVEL STOP DROPPING AND COOLANT LEVEL STAY AT THE FULL COLD MARK.PLACE COOLANT OVERFLOW JUG CAP BACK ON JUG.CRANK VECHICLE UNTIL ENGINE START WARMING UP. STOP ENGINE WAIT FOR A WHILE UNTIL COOLANT COOL DOWN TO KEEP FROM GETTING SCALDED. USE A LARGE RAG OVER THE OVERFLOW JUG CAP OPEN OVERFLOW JUG CAP A LITTLE AT A TIME REMOVE OVERJUG CAP CHECK COOLANT LEVEL ADD MORE. COOLANT IN THE OVERFLOW JUG.THEN START VECHICLE AGAIN.LET ENGINE IDLE UNTIL TOP RADIATOR GET HOT.THEN THERMOSTAT WILL BE OPEN.WHILE ENGINE IDLING WATCH THE TEMPERATURE GAUGE IN VECHICLE IF TEMPERATURE GAUGE START CLIMBING IN THE HOT ZONE.TURN OFF VECHICLE LET IT SET A WHILE THEN USE LARGE RAG REMOVE OVERFLOW JUG CAP.ADD MORE COOLANT, PLACE CAP BACK ON START VECHICLE AGAIN KEEP DOING THIS PROCEDURE UNTIL TEMPERATURE STOP CLIMBING HOT ZONE.AND WHEN COOLANT LEVEL STOP DROPPING IN THE COOLANT OVERFLOW JUG.AIR IS OUT THE SYSTEM, BUT KEEP COOLANT LEVEL IN THE COOLANT OVERFLOW JUG AT THE FULL COLD MARK.DONT OVERFILL.DONT LET COOLANT OVERFLOW JUG RUN DRY IF SO AIR WILL ENTER COOLANT SYSTEM BECAUSE COOLANT LEVEL WILL BE LOW ENGINE WILL START OVERHEATING.

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  3. Leak in radiator
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With low coolant levels by any 1 or a combination of 1-4, the vehicle will run hot at low speeds and at idle. Running the AC or heater pushes the remaining coolant through the system faster, aiding in cooling the engine but all indications are you've definitely have a cooling system issue that should be looked at immediately before doing damage. If the coolant level is good (when car is cold, open radiator cap and check for coolant level), the issue most likely lies in the waterpump.

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ok you have probably more than one problem first coolant leak im not sure which engine you have in your car but if it is the v six check at the tensioner there is to small ninty degree pipes they have orings on both ends of them and they typically start to leak motormite makes replacements for them if your car is continueslly running hot that can confuse your ecm and cause it to run lean or rich on fuel which will effect its idle small vacumm leaks can cause issues as well you can take throttle plate cleaner not carb cleaner and spray threw out your vacumm hoses it will idle up or choke out when you hit the hot spot for the leak im almost willing to bet you have a vaccum leak that whats causing your check engine light but however you have an upper hand for have a check engine light on thats the way your car is talking to you so dont ignore it take it in and have it scanned also because you have gm product it sets hard codes so have them pull all codes not just the current codes

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