Jason,
Don't just replace the cap. Go to a shop, any shop that has a pressure
tester. It's just a little manual pump that fits on your radiator in place
of your cap. You can pump it up to 15 psi and make sure it holds it without
leaking. If it doesn't, you need to find the source of the leak. If it
doesn't leak, then it could be the cap. It also could still be the water
pump.
The reason I asked if you had removed your belt before isn't because you
need to replace it. Sometimes people replace them incorrectly causing the
water pump not to rotate in the correct direction. You only need to replace
it if:
1) there's a lot of slack and you can't put any more tension on it.
2) there's cracks in the belt or it's fraying.
3) it's squealing.
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: Sunday, July 07, 2002 8:09 AM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: DML: Re: RE: I need serious help...
No, I haven't. Is that something else that I should look into? I just
turned over 60,000 miles and it is still the original belt. Someone else
mentioned the cap also. I figured that I would swap that out tomorrow too
when I do the flush and t-stat change.
Thanks,
Jason
""Ronald Wong"" <ron-wong@cox.net> wrote in message
news:NDBBIHDGKKJOIJDEOCBMEEMDFMAA.ron-wong@cox.net...
>
> First thing I would do is pressure check the system. Nothing will piss
you
> off more than to find out the radiator cap wasn't holding pressure and you
> spent all that money for a $5 item. Remember, first symptom of
overheating
> in these new vehicles is amount of antifreeze, flow, and pressure. Now,
if
> you check that and it's still a problem then it's off to more exotic (and
> expensive) things. My guess would be the water pump. By the way, you
> haven't removed and replaced your serpentine belt lately, have you?
>
> 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: Sunday, July 07, 2002 6:37 AM
> To: dakota-truck-moderator@bent.twistedbits.net
> Subject: DML: I need serious help...
>
>
>
> Hey guys, I need your help. For the past week or so, I have been having
> problems with my truck overheating. Last summer I had put in a Robert Shaw
> 180 degree thermostat just to help things run a little smoother and to
help
> remove some of the ping. Then about a week ago I drove the truck about 120
> miles and it began to overheat. The needle would rise close to the upper
> operating level but not yet to redline. I stopped the truck at Wal-Mart
did
> about 30 minutes of shopping, and when I started the truck back up to head
> home it ran perfectly fine. Well, I was getting ready to go on a canoe
trip
> that weekend so I swapped out the 180 for the original 195 thermostat
> thinking that maybe the thermostat was sticking and also made sure that
the
> fluids we topped off. I then drove it around for about 20 minutes and all
> was well.
>
> Then we left for our trip. About 30 miles down the road the temp started
to
> rise, but then all of a sudden it would drop back down to normal. Then a
few
> minutes later it would rise again. It would go up and down repeatedly for
> the next hour (until the next town). At this point it never passed the
upper
> operating line. We stopped to get gas and then let the truck cool for
about
> 45 minutes. As we left the temp stayed perfectly fine for another 60 miles
> and then it started acting up again. This time it passed the line to
almost
> redline, so I parked the truck and left with other friends. Then 2 days
> later we came back to get the truck. I filled the fluids back to normal
> since I had lost some from the overheating, and we left. We then made it
all
> the way home without incident until the city limits (about 140 miles) and
it
> started happening again. The temp would rise and fall repeatedly.
>
> The next morning I took my truck to the dealership to have it looked at.
> They said that all seemed to be running fine. They didn't have a way to
> drive it 100+ miles to get it to overheat. The only thing that they could
> come up with was that the radiator was dirty, and needed to be pulled from
> the truck and sprayed out from the back side ($200). I told them that that
> didn't seem like it could be the problem considering how inconsistent the
> temp had been. I took the truck home and checked the fluids again, bled
all
> air out, changed the oil, and cleaned the K&N and then drove it about 70
> miles. No problems.
>
> We then take a 30 minute trip and it all starts over. I am now to the
point
> where I will be doing a full coolant flush, replacing the thermostat
(again)
> and seeing if I can pull the radiator out to spray it from the backside.
>
> Has anyone seen anything like this? Any suggestions? Would a dirty
radiator
> actually cause this? There doesn't seem to be any leaking hoses, the water
> flows, the temp sensor is working. What could this be?
>
> Thanks for all your help,
> Jason
>
> '00 Sport Quad 4.7L 4x4 3.55, Autolite 3923's, BFG AT T/A,
> IAT Adjuster, 360° Air Intakez, Robert Shaw 180° thermostat,
> Line-X sprayed bed and nerf bars, Roll-n-Lock tonneau
>
>
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