Yes, pump can be on the way out in which case it works, then doesn't, etc.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
-----Original Message-----
From: owner-dakota-truck@dakota-truck.net
[mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of KCDak
Sent: Monday, July 08, 2002 6:00 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: DML: Re: RE: Re: I need serious help... (Update)
I do get heat, just not always. I will go have the system pressure checked
tomorrow. Could it still be the water pump even if I can visibly see the
coolant moving with the cap off and it running?
Jason
""Ronald Wong"" <ron-wong@cox.net> wrote in message
news:NDBBIHDGKKJOIJDEOCBMKENLFMAA.ron-wong@cox.net...
>
> I told him to do that yesterday, Will. One of the first problems in
engine
> cooling...pressure pressure pressure. It ain't the temp sensor. They do
go
> but usually they're one of the last things to go. After all that I've
read,
> I'd be willing to bet he's got a water pump bearing going, going, gone?
> Why? One of his statements was the heater is on but no heat is coming
out.
> Can't get heat if pump ain't pumping. If it was a pressure loss, you
would
> still get heat and plenty of it.
>
> Ron
> 00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
> For modifications see my DML Profile (URL follows)
> http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
>
>
> -----Original Message-----
> From: owner-dakota-truck@dakota-truck.net
> [mailto:owner-dakota-truck@dakota-truck.net]On Behalf Of
> ABeerCan@aol.com
> Sent: Monday, July 08, 2002 5:09 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: Re: I need serious help... (Update)
>
>
>
> << I just went out and started the truck and let it run for about 10-15
> minutes. I removed the radiator cap and stuck a meat thermometer in to
> check the temp. The temp is sitting right around 190 degrees which is
what
> the gauge is showing. I can also see the coolant clearly moving through
> the
> tube. This tells me that at least the pump is pumping the water, the
> t-stat
> is opening to allow the flow, and the temp sensor is at least showing the
> correct temp right now. Not sure what to check next.
> Jason >>
>
> Jason,
> Since the truck seems to run hot inconsistently and you are also
loosing
> coolant with no signs of a leak, have you checked your head gaskets? I
know
> that sounds odd, but stuff happens. I would take the truck to a shop that
> can do a pressure check on the cooling system. They should remove the
> radiator cap, use a tool that attaches where the cap was and then
pressurize
> the system. This will tell if you have a leak somewhere. They can also
add
> a UV indicator that will fluoresce under a black light if the leak is
> external. I know it seems odd that the head gaskets might have already
gone
> out, but it can happen. When you produce products by the 100,000s
something
> will go wrong somewhere and always slip by inspection. HTH
>
> The other Will
>
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