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Put in a new tranny then my ram 1500 5.2l auto starts but after a few seconds i hear a noise like air blowing out the rpm gauge drops and it dies. have replaced distributor cap and rotor o2 sensor, camshaft and crankshaft sensors, as well as changed the oil, replaced spark plugs and wires. ran diagnostic machine and nothing. even replaced ecu and fuel pump and fuel pressure regulator. check engine light did flash four times though. help
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Have the fault codes read. Replace faulty items. Use only genuine items as non-genuine replacement are not always compatible with the OEM fitted CPU units.
WELL YOU NEED TO DRAIN COOLANT LEVEL BELOW THERMOSTAT LEVEL.YOU HAVE TO DISCONNECT MAF SENSOR LOOSEN AIRDUCT 2 LARGE CLAMPS LOOSEN REMOVE 4 SCREWS TO AIR FILTER COVER LIFT UP REMOVE COVER. THEN REMOVE AIR FILTER AND HOUSING, FIRST DISCONNECT MAF SENSOR.YOU HAVE TO DISCONNECT THROTTLE CABLE AND SHIFT CABLE.YOU HAVE TO DISCONNECT REMOVE THROTTLE BODY COOLANT HOSES DISCONNECT IDLE SPEED CONTROL VALVE CONNECTOR AND DISCONNECT TPS SENSOR CONNECTOR. THEN REMOVE THROTTLE BODY ASSEMBLY. YOU NEED TO BUY NEW THROTTLE BODY COOLANT HOSES AND NEW THROTTLE BODY GASKET FOLLOW TOP COOLANT HOSE TO ENGINE BLOCK.NOW YOU SEE CAN AND REMOVE THE THERMOSTAT HOUSING REPLACE THE THERMOSTAT.BESURE TO HAVE EXTRA COOLANT ON HAND.BLEED COOLANT SYSTEM WHEN DONE.TO BLEED COOLANT SYSTEM REMOVE RADIATOR CAP ON OVERFLOW JUG.THEN OPEN BLEED SCREW ON THE WATER PUMP BYPASS HOSE PIPE JUST A LITTLE.POUR COOLANT IN THE OVERFLOW JUG UNTIL LEVEL STOP DROPPING.STOP AT COLD MARK ON JUG.CLOSE BLEEDER SCREW ON WATER PUMP BYPASS HOSE PIPE.CRANK VECHICLE CHECK FOR LEAKS. START UP ENGINE LET IDLE FEW MINUTES THEN CHECK COOLANT LEVEL ADD MORE UNTIL UNTIL LEVEL STOP DROPPING.PUT RADIATOR CAP BACK ON OVERFLOW RESERVOIR. LET ENGINE IDLE WATCH COOLANT TEMPERATURE GAUGE.WHEN GAUGE START CLIMBING. TURN OFF ENGINE WAIT FEW MINUTES TAKE A LARGE RAG OPEN RADIATOR JUST A LITTLE YOU HEAR HISS NOISE.WHEN PRESSURE STABILIZE DONT GET SCALDED BECAREFUL.OPEN CAP LITTLE MORE.IF COOLANT PRESSURE STILL BOILS OUT WAIT 20 MINUTES ADD MORE COOLANT TO RADIATOR OVER FLOW WHEN COOLANT LEVEL STOP DROPPING.PUT RADIATOR CAP BACK ON START VECHICLE UP LET IDLE UNTIL THERMOSTAT OPEN. THEN FEEL TOP RADIATOR HOSE FEELS HOT THERMOSTAT OPEN WATCH TEMPERATURE GAUGE.IF GAUGE TEMP START CLIMBING TURN OFF ENGINE WAIT A WHILE.CHECK AND ADD MORE COOLANT.WHEN THE ENGINE CAN IDLE TEMP GAUGE STOP CLIMBING YOU HAVE BLEED COOLANT SYSTEM.KEEP CHECK ON COOLANT LEVEL.
sounds like an intake leak / getting to much air at low rpm . spray a (tiny amount) of tractor starter fluid near the intake base and see if the rpm speeds up if it does it's leaking you need new intake gaskets, or a hose is leaking , get a vacum guage to test it.
could be a lot of things. I personally would start with your vacuum lines... check for a leak somewhere. You can do that by spraying carb cleaner (if motor tries to die, you found your leak), or it could be a sensor, likely idle air control, mas air, etc.)
Usually you get a horrible noise,once the compressor starts...May be the instant the compressor starts the voltage drops down and so it doesnt blow as strong as you expect...
If u expect a comparitively heavy blow then adjust the thermostat to 20 degree celsius...Try this,I hope this works out...
Make sure the engine is cold and and remove the radiator cap. Top off the radiator and coolant recovery tank. Put the cap on the recovery tank but leave the radiator cap off. Start the engine. Monitor the temp. gauge about every 20 seconds. Carefully grab the upper radiator hose in 90 second intervals and very gently squeeze it a few times to help release the trapped air.The coolant level should drop visibly into the radiator as the thermostat opens. Now bring the rpm up to about 1800 and HOLD it there while you top off the system and then tighten down the radiator cap completely before you drop the engine rpm. I recommend using a friend to help with this procedure. Then let the car run as you check for the upper hose to feel warm and solid to the touch. Watch the gauge. The reading should be steady. If it starts to overheat, shut off the engine and wait for it to cool down. Repeat the procedure if necessary
when you turn the key to the ON position you should hear your electric fuel pump come on (a quiet hissing noise) if you dont hear this noise your fuel pump has gone out, if you do hear the noise you might want to check your fuel filter it could be clogged and starving the engine of fuel
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