Originally Posted by CPT2010
93k miles should i change the belt?
last night i was driving temp running at normal. nice and cool.
then i parked. we come back in about 20 mins. i start her up needle moves to a little pass middle likes she is over heating as i have her in reverse. i'm with a girl so i dont panic. turn off a/c and put her in drive and start moving. needle quickly goes back to the middle( never stays there). normal postion is below the middle.
should i change the thrmostat? is that going bad? belt slipping? but it wasnt making a squeeling noise.
water pump going bad?
it hasnt dont it sense. dont want to get caught with my pants down.
thank you guys
Your serpentine belt is due for changeout every 60K miles. At 93K, it's overdue unless you know that it was changed at the first 60K miles interval. Not saying this is the cause of your symptoms, but keep it in mind as something to be done.
The coolant should be flushed and changed at 5 yrs / 100K miles. Use MOPAR HOAT formulation. Your antifreeze can be tested for protection to -50F, which also gives a raised boiling point by altering the colligative properties of the solution. However, the anti-corrosive additives will probably be gone by now, so a change is in order very soon.
If your '05 HEMI is like my '08, it has a hydraulic cooling fan (powered from the power steering pump and a solenoid valve to actuate it) and this might not have kicked in initially when your were backing out of the space as the power steering was drawing the power from the pump.
I notice that it's somewhat "anemic" when the Jeep first starts, it's turning as I start moving and the A/C unit is running. Normal operation after I get started forward. Similar to that which you reported. These HEMI's do not have a "fixed" idle speed, rather the PCM computer sets a "target" idle speed based on conditions. I've watched the engine load (on the DashDAQ) with and without A/C running. It jumps dramatically when the A/C clutch kicks in.
Hope this helps.
My 2 cents worth.