Quote:
Originally Posted by BimmerBenz
If you have a clutch fan that is your culprit.
To test head gasket:
Cold engine, open hood.
Start engine then grasp the upper rad hose. It should be 'squishy'. Keep squeezing it. It should remain soft for 10 minutes of testing and actually at least until the operating temperature hits 50% on the gauge. If the hose gets hard in under 10 minutes you have a HG issue.
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Good info on the fan clutch. I do think mine is not in the best of shape. I did not replace with a new one, I got a used one. They seemed to operate the same. I did try this. Since I have two of them, I locked down one of them and installed it. I found that with a direct drive fan my temps lowered to just below red-line while sitting in traffic. This solved my problem of being able to get around however, my fuel mileage suffered and the fan was very loud at speed. So I switched back to the other fan and am now once again hunting down whatever is making the engine way to hot in the first place. Correct me if I'm wrong, but would a direct drive fan overheat my engine while idling in traffic? If not, I have other issues than a fan clutch.