Question about 2003 Mazda MPV

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Van is over heating... we have replace the thermostat the radiator, the water pump and the belt for the water pump any ideas????

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Check the fan relay for the radiator

Posted on Nov 07, 2010

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Vehicle heats up very fast and I get no heat out of the dashboard. The upper hose is hot but the lower hose is cold after running the engine overheats. When I started it, the belt was squealing. Aft


START WITH THE BASICS. CLEAN, FULL 50/50 MIX IN SYSTEM. CHANGE THERMOSTAT. LOOK FOR TRACES OF COOLANT LOSS FROM THE WEEP HOLE IN BOTTOM OF WATER PUMP (USUALLY UNDER PULLEY). WATER PUMP DRIVE BELT OR SERPENTINE BELT MAY NEED TO BE REPLACED. ALSO MAKE SURE RADIATOR CAP IS WORKING PROPERLY.CHECK FOR LEAKS ANT WHERE ELSE IN ENGINE AREA.

Dec 02, 2014 | 2004 Pontiac Montana

1 Answer

Overheating and no heat


With what you describe sounds like the hot water is just heating up but not circulating and cooling correctly. Possible causes, airlock, faulty water pump, check fan belt tension, not broken etc, blockage in engine water way or collapsed hose. Are you losing water at all? Head gasket?

Jan 10, 2014 | Cars & Trucks

1 Answer

2003 GMC Savana Van. The resevoir is full. The radiator is full, yet rusty looking water. Ran hot, thermostat redlined. Let engine cool. Made it a few more miles. Mechanic wants to do water pump,...


Idea is simple, go to a actual radiator shop to see water is circulating , this is a clogged radiator/ or stuck thermostat or water pump. Master cylinder and serpentine has Nothing to do with your issue.

Apr 12, 2013 | Cars & Trucks

2 Answers

What is making my van over heat


well depend on if is loosing coolant or not if not the first and cheaper is replade termostat . next may the catalyctic convertor is cloge i hope not expensive. if the van was over hot before may the water pump and termostat together

Dec 16, 2010 | Chevrolet Astro Cars & Trucks

2 Answers

My van still shows sign off over heating according to my thermostat but recently replaced water pump and radiator


the 4.3 engine has a problem with leaking intake manifold gaskets. check for leakage behind the water pump. did you change the thermostat? This controls the engine temp. check for rusty radiator cap and replace if worn

Nov 06, 2010 | 1999 Chevrolet Astro

1 Answer

Van keep over heating after replacing water pump,thermostate .


checked for loss of water? and check oil for tan color
indicating a water /oil mix .
any white smoke at the tailpipe?
and last maybe thermostat sensor is connected with no shorts.

Aug 24, 2009 | 2002 Dodge Grand Caravan

2 Answers

2001 pontiac montana overheating no warm air when heat is on


Might be a weak or failing water pump... Does it leak antifreeze or do you have to add antifreeze very often? When the engine gets to operating temperature squeeze the top radiator hose and see if you can feel pressure from the water pump forcing water through it.

Feb 21, 2009 | 2001 Pontiac Montana

2 Answers

OVERHEATING


This could be a multitude of things:

Stuck closed thermostat.

Cooling fan not coming on.

Clogged radiator.

Low on coolant.

Water pump failing/leaking.

Head gasket blown, leaking exhaust into antifreeze.

Clogged catalytic converter.

Thermostat: If the Van heats up, then feel the upper radiator hose. If it's cold, then your thermostat is closed. Replace thermostat.

Coolant: If low, simply fill with distilled water and coolant. Low levels will let engine over heat.

Radiator: If there are cold-to-the-touch spots on the radiator after it should be warmed up, then a clogged is probably occuring. Have radiator flushed.

Head Gasket: If you smell exhaust fumes in your coolant reservois tank, then you got a blown head gasket.

Cat Converter: Only can be tested if off the car. Or you could try a non-contact thermometer. These are also good to testing cold spot on radiator or if thermostats are open.

Cooling fan: If mechanical it'll be spinning. If electrical, it should come on automatically with the A/C, or when it gets hot.

Water pump: Will be leaking from the front if it needs replaced. On a van, it's a tough job.

Good luck!

Feb 10, 2009 | 1995 Ford Econoline

1 Answer

Toyota estima 2.2 td 1992 van overheating


the impellors in the water pump are prone to corrosion,especially if no or incorrect radiator additives have been used .this will cause water to stay in motor & boil whilst the water in the radiator stays cold because it cannot circulate.try flushing radiator ,installing a new thermostat (which is more than likely not opening )& radiator cap,refil with correct additive,.if the car still over heats then you will need to replace the water pump.bugger!!

Dec 28, 2008 | 1992 Toyota Previa

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