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How to change a water pump in a 1981 Dodge Ram van 350

How to change a water pump in a 1981 Dodge van 360 engine

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 74 Answers

SOURCE: 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!

Posted on Feb 10, 2009

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  • 5 Answers

SOURCE: how to replace 1998 dodge ram van water pump

There is a special spanner wrench that you need to hold onto the water pump pulley (the 2 holes in the big pulley the belt rides on).
The tool has a Y shape to it with a handle coming off the bottom end of the Y. There will be 2 pins in the ends of the V that fit into the holes on the pulley (adjustable). You put the pins into the holes, grab the handle with the left hand, and put a 15 inch cresent wrench in the right hand onto the clutch nut. Pull up on the Y shaped tool handle with the pins, push down on the wrench to the left (counter clockwise) to un-screw the clutch from the pulley.
Then take the clutch off the fan after you have it out of the truck.
LEAVE THE BELT ON UNTIL YOU GET THE PULLEY LOOSE!!!
THEN, take the belt off, then the pulley/clutch asembly off, then the water pump (replace with a NEW - NOT REBUILT PUMP).
The new only costs 20 bucks or so more, and it is worth the headache of paying more while you have it apart. If the clutch is shot, the pump is close behind because of the vibrations ruins the seals/bearings on the pump, even though you cant hear the noise, it is there. Take the LOWER fan shroud completely off by removing the trans lines from the radiator. pull the fan out the BOTTOM of the Van. Leave the top shroud in place but take the screws out so you can manuever the lower shroud out. You also may have to remove the lower radiator hose and move it aside. Good time to change coolant anyway. And since you are in there on top, change the thermostat, while you are doing the cooling system service. Use a PREAMIUM BRAND thermostat, like a STANT, it will have a small vent hole with a valve in it hanging off the side edge of the thermostat that helps vent air from the system so it will not overheat. Trapped air can cause the cooling system to overheat, so dont put the thermostat in upside down! Point go's UP.
GOOD LUCK.

Posted on Feb 17, 2009

  • 176 Answers

SOURCE: water pump 1996 dodge ram van 318 2500

Before you remove the serp belt, loosen the clutch fan bolts from the water pump. Other wise you will be fighting with them later. Other wise just drain the coolant and remove the pump. I would suggest a new thermostat since the coolant is drained. Make sure the block surface is cleaned of all gasket material and other dirt before installing your new pump. I usually scrape the area with a putty knife and wipe it down with some brake clean on a rag.

Posted on May 20, 2009

greg_margo
  • 1959 Answers

SOURCE: firing order for dodge 2001 ram van 1500,

Here you go:
5.2L and 5.9L engines Firing order: 1–8–4–3–6–5–7–2 Distributor rotation: Clockwise

Diagram link below:

http://www.chiltonlibrary.com/content/images/7924/images/79243g14.gif

Best of luck!
Greg

Posted on Jun 14, 2009

tpllima88
  • 35 Answers

SOURCE: 1988 DOdge Ram 350 van wont fire or start?

first is first check battery and alternator

Posted on Feb 24, 2010

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Before you remove the serp belt, loosen the clutch fan bolts from the water pump. Other wise you will be fighting with them later. Other wise just drain the coolant and remove the pump. I would suggest a new thermostat since the coolant is drained. Make sure the block surface is cleaned of all gasket material and other dirt before installing your new pump. I usually scrape the area with a putty knife and wipe it down with some brake clean on a rag.

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