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If the water quit coming out,is that an impeller problem? This is a new engine

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I have 2002 vw jetta wagon and it keeps over heating. We have changed the thermostat fuses relays and the heater core connector. We think the water pump is working fine because it has pressure and...


Pressure is not a good indicator of water pump operation. Pressure in the cooling system comes from the heating of the water and its expansion. Jettas come from the factory with plastic impellers on their water pumps. These have a tendency to break and fail, causing overheating issues. Most aftermarket pumps have metal impellers to prevent this from happening. I would seriously consider having the water pump replaced, especially if it is original and you have more than say 60K miles on the car. It's due for a change anyway and may save you your engine. See what this guy had to say about his Jetta.....


Engine Overheating Due to Damaged Water Pump Impeller Volkswagen Jetta...

Mar 12, 2015 | 2002 Volkswagen Jetta

1 Answer

Little heat coming out of heater on 1999 chev 1500


You have a vapour lock. The coolant isn't flowing. The remaining water is not cooling your engine evenly so you could crack your engine block. The water that isn't circulating turns to steam. The water pump could need replacing if the impeller failed. You may need a new thermostat. Get someone knowledgeable enough to fill your radiator properly and then keep the overflow reservoir filled to half. Check that bottle at least every week.

Nov 29, 2013 | 1999 BMW 323 Series

2 Answers

Radiator top hose busted now there is noise in engine, sounds like water got in engine through intake or plugs got wet/ wiring. draining oil looking for water in it. If water in oil and now a noise were to...


no be carefull and dont play with something you dont understand ,noise could be the plastic impeller on the waterpump drive shaft come adrift causing the engine to overheat and burst the pipe and the noise is the impeller loose inside the block housing

Sep 27, 2013 | 2007 Dodge Charger SRT8 Sedan

1 Answer

I was wondering how much trouble it would be to change out an impeller on a esrly 80's 110 hp evinrude tracker outboard engine.


Impeller? or Propeller? Propeller is just a nut with a carter key holding it on.

Impeller, or water pump? It isnt too bad. You have to take the lower uint off. There is a roll pin in the linkage going to the forward/reverse mechanizm. Then take out the bolts and drop it down. It has a shaft that comes with it out of the engine. Then the water pump is bolted on that shaft. Check the seals under the pump and the oil in the gearbox for water. Mine was bad and pumped water into the gearbox and oil up and out. Then froze and busted.

Dec 17, 2010 | Ford EXP Cars & Trucks

1 Answer

How do i remove the water pump pulley or impeller so I can replace the leaky seal and re-install the pump? Do i need a puller ? If so, do I pull off the impeller or the pulley?


You don`t remove the impeller.The new one comes with it.Just remove the water pump and install the new one.Hope this helps.Good luck.

Nov 12, 2010 | 2004 Dodge Grand Caravan

1 Answer

2001 VOLKSWAGON GOLF 2.0 L ENGINE KEEPS OVERHEATING,RAD NOT PLUGGED,FAN MODULE NEW


If you haven't replaced your water pump (composite impeller) to an aftermarket (metal impeller) then your heating problem lies in there. VW uses a plastic type impeller which cracks at the shaft connected to the pulley that drives it. When that happens, it might spin slower than engine speed or not at all. This will be a good time to do a timing belt service because it has to be removed out of the way in order to get to the water pump housing, so keep that in mind. Water pumps range from $69.95 - $89.95 from most VW internet shops that also offer free ground shipping.

Jun 02, 2010 | 2001 Volkswagen Golf

1 Answer

Water pump doesn't work but there is no water leak it can be just a sensor problem?


No, but it could be the impeller inside the water pump, has come loose from the impeller shaft.

A leaking seal indicates that the bearing, or bearings, for the impeller shaft are bad.

I have replaced water pumps, (With a brand new one), and have had to remove it, and reinstall with another one.
Why?
Impeller is spinning around on the impeller shaft. The machining done was a bad job, and the impeller wasn't staked to the impeller shaft.

Aug 04, 2009 | 2002 Jeep Grand Cherokee

1 Answer

On my way to work my tempo overheated and shut down. could this be the thermostat or water pump


check for water flow in the radiator. if the hoses dont expand when you rev the engine, the water pump is probably bad. alot of the factory water pumps have a plastic impeller on them, and the impeller will break in pieces inside the pump housing. if you take the hose off the pump you can see the impeller. napa sells a new one with a aluminum impeller and its a new one, not rebuilt.

Jul 17, 2009 | 1991 Ford Tempo 4 Door

1 Answer

Engine runs hot, fan comes on & stays on.


Try to see if the water is circulating in the system. Better way to check without burning yourself is to take the thermostat out and run the engine this way it should start circulating right away. If the impeller on the water pump is not turning the water wont circulate.
I have seen this in a VW Jetta but don't know what type of w/pump is in your Honda.

May 12, 2009 | 1986 Honda Civic

7 Answers

Overheating problem


water pump. water pump. water pump. i am a vw dealer tech and on 2.0 and 1.8t beetles the water pump impeller is plastic, and what happens is usually another component, fans, fan control module (under battery tray), thermostat, fails and because the impeller is plastic with just one overheat the plastic becomes brittle and shatters, pull the water pump out and you will see the impeller in 3 or 4 pieces. replace water pump and make sure t stat opens, fans come on (a/c off) and proper water pump flow.

Jul 29, 2008 | 2000 Volkswagen Beetle

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