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  #1  
Old 03-16-2011, 12:39 AM
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OK, so I was out tonight and I noticed my lights starting to dim on my dash. Then, noticed my temp gauge starting to climb and having 2 kids(4 and 3) in the car threw the heat on as we were only 2 miles from our destination. 1/2 mile later all of the sudden lights came right back n at 100% then heat came down, 1/2 mile later it went back to dim and high temp. Then pop, anti-freeze everyone, gladly almost at our destination. I'm thinking water pump bearing went. Ideas?

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Old 03-16-2011, 01:29 AM
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Water Pump is a definite possibility. If it was leaking onto the belt, that would explain the dim lights and rising temp, as the belt could have been slipping. But I would have expected you to also complain about the steering being heavy or choppy.

If it were a rad hose, it could have sprayed into the alternator, causing intermittent dim lights, and the loss of fluid would account for the temp rising.

Pump...Hose...Rad Could be any or all of. Check them all for any obvious signs.
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Old 03-16-2011, 01:32 AM
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I agree with ^^^^ Brad. The slipping belt explains the dimming of electrical components due to being wet. And if the belt was slipping, the water pump is rotating slower, not sending as much coolant through the system, causing slower heat transfer and a higher operating temp.
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Old 03-16-2011, 12:55 PM
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In just getting the hoses off I can tell two things already: 1 - there is a ton of play in the fan; 2 - inside the upper hose you can see little metal shavings. I'm thinking the water pump went bad, just questioning myself because there is only 53k on the truck and I never really put alot of strain on the engine.
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Old 03-17-2011, 09:44 AM
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It was the water pump, bearings went. I ended up replacing the water pump, both hoses, and thermostat. Was not that bad of a job, the hardest part was getting the fan off the pump, which the local auto store ended up doing for me.
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Old 03-17-2011, 11:29 PM
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You can check into this, or not.
When I had my cooling system flushed, and refilled at the dealership I watched the guy doing it, and he put a "small packet" of something in it when he was almost done. When I asked him what it was, he stated that it was "water pump lubricant". You may want to see about adding one of those "packets", since you installed a new water pump.
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Old 03-18-2011, 04:31 PM
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Thanks for the tip on the lube, I would have never thought about that.
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Old 03-18-2011, 04:34 PM
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Chrysler recommends against additives to any of their fluids with the exception of LSD additive for the rear diff. Personally, I recommend changing coolant ever 3 years to make sure the pump stays lubricated properly.
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Old 03-21-2011, 01:28 PM
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Thanks to everyone for their help, I used this and other threads by others to help. I will offer this as advice as I did not find it mentioned when I searched. When re-filling with coolant as most of it was drained(changed the water-pump, hoses, and thermostat); I used the upper plug on the block (a few inches from the inlet of the hose) to create a vacuum and fill the fluid faster and eliminate air bubbles. Once I started getting a solid flow, I did pull more than needed out since I saw some particles that came out.
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