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Old 05-03-2013, 02:01 PM
Chris65 Chris65 is offline
Dodge Ram Forum Senior Member
Join Date: Mar 2013
Location: Easley, SC
Posts: 82
Gender: Male
Vehicle: 2007 Dodge Ram
Trim Level: SLT
Color: silver
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Chris65 is on a distinguished road

There is a lemmon law even for used cars without warranty.
Did u checked the carfax?
Go to dodge-they can pull the repair history too.
Machining the head is ok. Don't worry.
The temp gauge thing seems like there is air in the system.
If there is air in the system, it can be the sensor gets the wrong temp and the pcm adjust the conditions.
Flush the system, set it on a slope with nose high. Flush the engine, fill cleaner in, run it on temp and mount the water hose sealed as possible and press the water out-lower hos off from radiaror, flush through the upper.
Refill the system and do the same 2-3times until the water is clear.
Refill with antifreeze and let it run, leave the pressure cap off. Increase slightly the rpm. If the water gets sucked in after the valve opened, fill untill the water does not disappear anymore.
Fill to the top and install the cap. Fill the expansion bottle and drive it wyth rpm over 2000.
When you're back, put a towel over the cap and gloves onyour hand and open slightly the cap while the engine is running. If you hear it suck and no water comes out, remove carefully and fill.
If you leave it sucking for a few seconds and then comes water, its ok.
Always put it on slope with nose high.
Do this, then u have at least the air out and eliminated one possible root cause.
The best is, if u got it apart anyway, put a new valve in.
When u done that, tell me if its better and what it does.
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