Heater Issues

Hello, Own a 1998 Ram 1500 4x4 Q.C. 5.9 ltr.
Here lately for the past few weeks,during this very cold snap here, when
I start the truck,I do hear water running in the dash, like someone let
water out of a sink, its from the heater box area.It does stop this
after a while,but when truck is warming up, and give it a little gas, it
changes with the rpm's of truck, Not getting heat like used to,but
getting some heat, coolant checks fine,good flow in radiator,coolant
level hasnt changed, radiator cap is ok,runs at normal temp-that hasnt
changed,but a couple of times on freeway,has run some cooler than usual,
floor and firewall is dry.I do know of a couple others that have same
year of Ram same issue An ideas? Air in system somehow?
Any ideas would be appreciated. Thank You for letting me post.
eljr64.TakeThisOut@webtv.net

el jr64 wrote:
> Hello, Own a 1998 Ram 1500 4x4 Q.C. 5.9 ltr.
> Here lately for the past few weeks,during this
> very cold snap here,
> when I start the truck,I do hear water running
> in the dash, like
> someone let water out of a sink, its from the
> heater box area.It does
> stop this after a while,but when truck is
> warming up, and give it a
> little gas, it changes with the rpm's of truck,
> Not getting heat like
> used to,but getting some heat, coolant checks
> fine,good flow in
> radiator,coolant level hasnt changed, radiator
> cap is ok,runs at
> normal temp-that hasnt changed,but a couple of
> times on freeway,has
> run some cooler than usual, floor and firewall
> is dry.I do know of a
> couple others that have same year of Ram same
> issue An ideas? Air in
> system somehow?
> Any ideas would be appreciated. Thank You for
> letting me post.
> eljr64.DeleteThis@webtv.net

Sounds like the heater core is clogged. The
heater core is simply a small radiator, it doesn't
take much to get it clogged with gunk. here's
what I would do:

Remove both heater hoses from the core.
Back flush with water from a garden hose.
Attach a short length of hose to each port on the
core, and angle both hoses straight up.
Pour radiator flush into one hose until it comes
out the other.
Let it sit overnight, and back flush again.

If that doesn't work, you'll probably have to
replace the core.

--------
..boB
2006 FXDI hot rod
2008 Mustang Coupe
2007 Ram 2500 CTD/Auto/4x4
1965 FFR Cobra - 427W EFI, Damn Fast.