99 dodge intrepid water reservoir - Water shooting out of top-side - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 18 (permalink) Old 05-16-2017, 06:35 PM Thread Starter
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99 dodge intrepid water reservoir - Water shooting out of top-side

Hello, All;

Well, another blasted issue to add on to the blasted issues this car is having.

My son just called me up and said the car is overheated and spewing water out.
He took a video and some pictures for me, and it is not the radiator, it is the Reservoir.
And it is coming from a hole that I DO NOT remember being there.




Video of it.


can someone please let me know WHERE that blasted hole came from?
And do we need to replace this thing?

Wayne
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post #2 of 18 (permalink) Old 05-16-2017, 08:57 PM
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The hole was always there - you just never had a reason to notice it before. It allows the overflow section to "breath" if coolant moves in or out (i.e., due to overpressure forcing coolant past the cap, or if coolant is pulled into the engine due to being low in coolant - generally due to a leak).

It may simply be that the cap is bad, so that hot coolant blows past the cap into the overflow (and eventually out that hole you were wondering about). With the system cool, remove the cap and look at the rubber gasket on the underside of the cap that seals against the fill hole of the reservoir. If it's got pits or cracks in it or generally looks rotted, replace the cap (I prefer the ones from the dealer). If the cap is not sealing, then the system is unable to pressurize. The normal operating temp. is above 212F. If system pressurizes, it won't boil even above 212. If no pressure, coolant will boil like it's overheating when it actually is not, until it has spit so much coolant out that it then will overheat due to not enough coolant to circulate thru the radiator.

OR - maybe the cap is fine and it really is overheating due to bad thermostat (not opening or installed backwards), or coolant has been allowed to get too low, bad radiator (clogged tubes or fins blocked with insects, sand, etc.), clogged system flow, water pump not pumping (i.e., impeller spinning on shaft), blown head gasket passing cylinder pressure into cooling system, or radiator fans not working (worn out and binding up and/or blown fan Fuses B or E in PDC, or Fuse 21 in Junction Block, or bad connector or relay). If that's the case, he has to figure out which of those things is causing it to overheat.

Is there a proper 50/50 mix of coolant, or is it all water? Plain water boils at lower temperature than the proper mix. Boiling temperature is raised by both pressure and antifreeze in the right proportion with water.


'98 LXi - Later Concorde gages (black w/ chrome rings)/'99 LX - LHS gages (white) - HIR bulbs

Last edited by peva; 05-16-2017 at 09:13 PM.
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post #3 of 18 (permalink) Old 05-16-2017, 09:34 PM Thread Starter
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Thanks, Peva.
I told my son that it MIGHT be a drain off, but was not sure as I did not notice it there when I drained the system.

When I drained it a few weeks ago, it was gross looking.
I am talking, it looked like a babies dirty diaper, on a runny day. (Hint to all the parents out there)
I took the reservoir off and cleaned it out as good as I could.

I replaced it with water and filled the Reservoir up with 100% antifreeze, however.
I was not able to get all the Antifreeze in.

I checked the cap, but cannot remember what the o-ring looked like, will have to take a look at it again.

With the way the water looked, it could be that the thermostat could be bad, due to all the clogged up water.
I put it to you this way.
The reservoir was so thick with sludge, that when I poured it out, it actually did look like what I described above.
And it was right, thick as well.

Maybe a new thermostat might help it along, but hoping that the radiator is fine.
I will send my son a link to pick up the thermostat and come by tomorrow to swap it out.

This guy does not have a clue what he is doing, I don't believe.
But is the thermostat located in the same place, as he is showing, for the 99?
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post #4 of 18 (permalink) Old 05-16-2017, 09:45 PM Thread Starter
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I just read that it is located beside the oil filter.
If so, can it be accessed from underneath the car, or is there not enough room?
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post #5 of 18 (permalink) Old 05-16-2017, 11:20 PM
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Apparently no one has ever changed the coolant, or someone put in the wrong type of coolant, or incompatible coolants were mixed. Possibly a stop leak was put in. With it being as thick as you say, the radiator tubes could be stopped up. Thermostat may have never been changed.

The video is correct on replacing the thermostat. You can do it from above (removing the alternator) or from below. Personal preference - I prefer from above. There's a thread that I did, complete with some good photos, showing replacing from above. Whichever way you go, remove the oil filter for extra room to work.

Before installing, test the new thermostat in a pan of water on the stove with a thermometer to check the opening temperature, and that it opens and closes all the way. Not at all unheard of to get a bad new thermostat. I'd get it from the dealer, but still test it.

You may want to have the radiator pressure flushed in both directions. You can do it yourself with a garden hose, but put an adjustable pressure regulator in line with it, otherwise you could overpressure and burst it (typical house system pressure is 60 psi or more). Same with heater core and engine block. Might also use a good name-brand chemical flush.

On refill, you do a final flush with water only, pour a gallon or 2 of grocery store distilled water thru it (to dilute any remaining down to mostly distilled water), and drain as much water out as you can. *Then* you put half the system capacity volume (9.4 2 = 4.7 qts.) of pure antifreeze in, then finish filling (with distilled water) and bleeding according to FSM procedure. That gives you your 50/50 mix (even if there was some unknown small quantity of water remaining after the flush and drain).

EDIT: See post no. 4 here - clear photos of thermostat from above: Thermostat pita 3.5 woes

Be sure to put thermostat in the correct direction: long end pointing into the engine block.

See post no. 10 here for a very important trick to keeping the thermostat in place while reinstalling the thermostat cover: Radiator replacement tips needed


'98 LXi - Later Concorde gages (black w/ chrome rings)/'99 LX - LHS gages (white) - HIR bulbs

Last edited by peva; 05-16-2017 at 11:56 PM.
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post #6 of 18 (permalink) Old 05-17-2017, 02:48 AM Thread Starter
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Thanks, Peva.
Will look into doing this when they are ready for it.
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post #7 of 18 (permalink) Old 06-07-2017, 04:28 PM Thread Starter
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OK.
New radiator
New Thermostat and Gasket
New Bottom Hose (Top hose passenger side is good)

The car runs good, running the AC runs well.
Then the Temp Gauge starts going towards HOT
However, it is NOT overheating.
(Both Fans are running good, when you turn on the AC they kick in)

This is the bottom hose from the Fill Tank going to the block.



This is going to get replaced by next week.

Any ideas on WHY the thermostat would be show near about HOT?

Parts we used

CARQUEST Caps and Stats Thermostat, 180 Degrees Fahrenheit
https://shop.advanceautoparts.com/p/...4358/5650082-P

Felpro Thermostat Gasket
https://shop.advanceautoparts.com/p/...631/15780470-P

CARQUEST Radiator
https://shop.advanceautoparts.com/p/...409/19920031-P

CARQUEST by Dayco Curved Radiator Hose
https://shop.advanceautoparts.com/p/...977/12025398-P

Last edited by Wayne Barron; 06-07-2017 at 04:36 PM.
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post #8 of 18 (permalink) Old 06-07-2017, 06:05 PM
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Did you install the thermostat in the correct direction? Will run hot if put in backwards.

Did you test the thermostat on the stove in a pan of water with a thermometer to check for proper opening and closing at the right temperature? Aftermarket makes a lot of crap (not unheard of to get a bad one from the dealer too).

Did you use the FSM procedure to bleed air out of the cooling system?
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post #9 of 18 (permalink) Old 06-07-2017, 08:22 PM Thread Starter
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Hey, Peva.
No to all the above.

I believe it is the hose, from the pictures I posted.
The car did overheat, about 3o minutes after I posted.

I have the car here, and am going to find the hose for it, and replace that tomorrow.
Will have to wait and see.

In all the aftermarket stats that I have bought over the years, I have never had one be bad from the get-go.
And yes it is installed the proper way, the only way to install it.
(Those that throw these things in backward, should not be working on a car, to begin with.)

I will post back once I replace the hose.
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post #10 of 18 (permalink) Old 06-07-2017, 10:39 PM
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You're saying that hose from the reservoir is causing the overheating? Can you explain how? (You did not mention that it is leaking, so I assume it is not.)

There have been more than a few cases reported here of new thermostats being bad.

Some of the aftermarket thermostats cannot physically be put in backwards, but others can. Are you saying yours is one that can't physically fit backwards? If yours is one that could physically fit either way, how did you determine the right way for it to go in?

You did not mention bleeding it when you filled it. If you did bleed it, how did you do it?


'98 LXi - Later Concorde gages (black w/ chrome rings)/'99 LX - LHS gages (white) - HIR bulbs
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post #11 of 18 (permalink) Old 06-08-2017, 03:19 AM
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While you are at parts store, pick up a cuple new spring clamps for the hose. Screw types in my experience have been leak prone.
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post #12 of 18 (permalink) Old 06-08-2017, 12:34 PM
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The only way that hose being kinked would prevent the return flow from opening your t-stat is if your heater core is clogged. Do you get heat out of the cabin air vents?
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post #13 of 18 (permalink) Old 06-08-2017, 01:02 PM
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I think Wayne Barron is referring to what looks like a cut in the hose in the photo as being the source of a leak.
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post #14 of 18 (permalink) Old 06-08-2017, 06:09 PM Thread Starter
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I looked back at the video.
I installed the damn thing in upside side.
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post #15 of 18 (permalink) Old 06-08-2017, 06:19 PM Thread Starter
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When holding the housing in my hand, I placed the therm right side up, like I did on our Ford Taurus.

Now, I feel like a complete damn ass now.
At least now I know of a short cut to get it out.
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