93 Caravan water pump

AndrewG · #1 09-26-2007, 07:21 AM

Hello all.
I am being lazy by posting this. My 93 Caravan (140,000... 3.0L V6) has developed an overheating issue. I was looking to find out if the water pump is driven by the timing belt, and if so, if anyone had the timing diagram and or any helpful hints. I am no stranger to this type of repair, but I do know the value of others input. I am guessing water pump because the radiator is full and has good pressure. It just gets hot during normal operation, and up till now I have had no problems in three years.
Thank you in advance.
A

earlyrizr · #2 09-26-2007, 08:22 AM

pump is driven by the timing belt,but has the thermostat been changed lately?cheap and easy to replace, good place to start with. Also a plugged rad can cause overheating and still be full.

AndrewG · #3 10-10-2007, 08:09 AM

The thermostat was bad (stuck open). However the timing belt was so loose it could not adequately drive the pump. I changed the pump anyway and all is well. EXCEPT: Now it smokes at long lights (in other words on idle) from the exhaust. Maybe the valves are shot. Worst case I will just switch to synthetic oil so you at least don't SEE the smoke. Thanxs for your input.
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earlyrizr · #4 10-10-2007, 08:50 AM

smoking at idle usually caused by bad valve seals,can be done with the head still on the engine

AndrewG · #5 10-10-2007, 09:11 AM

Quote:

Originally Posted by earlyrizr

smoking at idle usually caused by bad valve seals,can be done with the head still on the engine

So A valve seal is not the ring that it seats on I am guessing? Are they under the valve cover? I guess I will get in the Haynes manual and read up on it a little.

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