Stealth4

nothing, but I will announce who was right. :-)

My car went into the dealer this morning.

Symptoms: first time I noticed I was driving around 15 mph in rush hour, ambient temp 85 deg, AC set to 72 with 4 bars showing. Coolant temp was two notches right of the middle and oil was at 260. Turned of AC, and when I got going at 60 mph it went to normal.

Next two times mostly just the coolant temp got high even with AC off. This happens especially if I have been driving and the car is at normal temps when I turn it off, then when I get in 10 min later the coolant is two notches hotter than when I left it. Coolant and Oil levels are normal.

So what part do you think is broken? (be specific (ie. fan clutch))

Ill announce what it was when I get it back.

jprice@CPS

thermostat? Coolant temp sensor?

GDJT Allroad^2

It is normal for a car to get hotter from sitting on hot days.

<i>This happens especially if I have been driving and the car is at normal temps when I turn it off, then when I get in 10 min later the coolant is two notches hotter than when I left it. Coolant and Oil levels are normal.</i>

Exactly. The engine is warmer than the coolant on a hot day after running in hot traffic. So when sitting, the coolant within the block gets warmer. When you kick on your car, you'll notice that it's reading the temperature of the coolant within the block, so it will read warmer than what it would be if the coolant is flowing through the radiator and is being cooled off. After running the car for a bit, the coolant cycles, cools off in the radiator, and you're running at a normal temperature again.

Stealth4

It gets hotter now when it never did under the same conditions before and it happens with regularity (every time I drive).

Driving at 15 mph with it 85 deg and AC on at 71 with 4 bars the coolant should not be ONE notch left of HOT, nor should the oil be 260.

DAP@EPL

Either your thermostat is sticking closed or the fan isn't working as Eric suggested.

GDJT Allroad^2

Worst I've seen my S4 get on a bad day is one notch to the right of straight up in heavy traffic with the AC going on a 95+ degree day.

RKA

And if they get that far, pay them a little extra and let them do the TB, tensioner, thermostat, and acc belts.

Stealth4

Oh I believe you

Stealth4

currently at almost 47,000 mi, but I have the audi extended for another 2 years or 100,000 mi

NASA racer

beer dispensers in the factory...strong Unions and ridiculously long lunch breaks and holidays.