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Old 03-15-2014, 11:52 AM
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Help - advice please! What is happening?

Looking for some advice guys please from over the pond. Have a 2005 Hemi and recently on way to work (only 4 miles) the heater hose blew leaving me limping into work in a cloud of steam. Just done the repair (having to splice OEM part with copper tube rather than remove engine!!). On way back home, the engine seemed to race without the velocity to match, temp guage went right up and down 3 times causing me to stop, lift the bonnet etc. Finally have got back home with engine temp now broadly normal. Key dance indicated P1521 (oil) and P2181 (temperature). Had the ETC warning light on for a period of time but this has now gone - seems I am having a sh1t load of problems all at once and do not know if they are related or just bad luck & coincidence all coming at once? When I was doing the repair, I did notice a bit of white gunk in the oil filler - again not sure if this is all related or as a result of the overheat (and god I hope not a blown gasket which may be my next forum request - pictorial instructions!!). Thank you all in advance for any help you can give - please.
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Old 03-15-2014, 12:00 PM
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Re: Help - advice please! What is happening?

Did you pull the dip stick after seeing the white gunk in the filler? If the oil is clear on the stick you are probably OK.

Sometime after replacing or repairing a hose and adding water there is an air lock. It may have worked itself out. Double check the water level.


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Old 03-16-2014, 08:14 AM
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Re: Help - advice please! What is happening?

Nothing on the dipstick so am keeping my fingers crossed. Have run it last night and again this morning without problems. Temp guage seems to be a bit higher than normal but I cannot honestly say as I did not ever pay that much attention before to its exact position. Not sure if I am losing coolant yet but am going to monitor over the next few days. Warning light has gone out now so we will see how things develop. Anyone help with any other signs of a blown head gasket I should look out for or be aware of?
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Old 03-16-2014, 03:33 PM
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Re: Help - advice please! What is happening?

Bill_de is correct on both counts. Anytime there is a significant loss of coolant, and then replenishment, the system needs to be "burped". There is a small allen plug above the water pump (by the thermostat housing) that should be removed when filling the coolant. This gets most of the air out of the system. You'll still have to watch it for about a week and maybe have to add a little more during that time.

The milky stuff in the oil filler neck is fairly common in the winter (more so if you're in a very wet climate) and is completely normal. I would highly recommend you add a catch can to the Hemi (if you haven't already), as this will "capture and eliminate" much of this stuff. It will not, however, completely eliminate it. With a catch can, again if you're in a real wet/damp climate, you may have to empty the can as often as every 600-800 miles. The contents will be, as much of us call it, maynonaise....a mixture of condensation and oil....yuck!!
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Old 03-16-2014, 05:39 PM
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Re: Help - advice please! What is happening?

My 05's "normal" needle position is just below the 1/2 mark on the guage when up to temperature.
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Old 03-16-2014, 05:47 PM
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Re: Help - advice please! What is happening?

A blown head gasket will often cause excessive, and constant, white smoke (water vapor) spewing out the exhaust. It will be so bad that people who don't know better will start yelling that your car is on fire.


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Old 03-17-2014, 06:53 AM
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Re: Help - advice please! What is happening?

Thanks All - duly noted comments. Living in the UK - we have just had the wettest winter on record so that may be something to do with it. 'Normal' position of my temp guage is just under half, but seem to remember it being a bit lower than that before. I suspect it could be that a major overheat which sent the guage almost off the scale, may have altered the calibration a bit. I need to go out on a major run to get it really hot and sit in traffic for a while etc to see what happens - just dont want to have a long walk home!!
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Old 03-24-2014, 05:10 PM
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Re: Help - advice please! What is happening?

I had one of those hose "blowouts" last summer, about a mile from home luckily. I had a guy tailgating me so I took it up to 160kmh to shake him. Noticed a cloud of white smoke and people tuning on their wipers. Gauge went to about 3/4 mark by the time I got home. Hoses were original, so I replaced every hose with OEM Mopar. The one that blew on mine was right at the 90 degree bend where the lower fitting comes through the firewall.

As others have stated the system can easily become air locked. It took some time to purge the air from the system after I refilled it.
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Old 03-24-2014, 06:58 PM
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Originally Posted by bluethunderjeep View Post
I had one of those hose "blowouts" last summer, about a mile from home luckily. I had a guy tailgating me so I took it up to 160kmh to shake him. Noticed a cloud of white smoke and people tuning on their wipers. Gauge went to about 3/4 mark by the time I got home. Hoses were original, so I replaced every hose with OEM Mopar. The one that blew on mine was right at the 90 degree bend where the lower fitting comes through the firewall. As others have stated the system can easily become air locked. It took some time to purge the air from the system after I refilled it.
I had my lower radiator hose blow out b/c one of the factory clamps snapped. Drove it one block put a new hose clamp on filled with water and drove another mile or so home. One month later it dropped a valve seat. Related? I think so.
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