Domer911

I'm almost certain that for the experts here this is a dumb question, but with engine running I am getting a rattling/clicking sound that is not rhythmic but is constant, at or near the front right radiator. What moving part is down there?

Terry Adams

Solenoid gone bad. Perhaps the one that controls open/close for the heating system flow.

TT Surgeon

Fan may be going bad too.

Domer911

So this is only happening with AC on. Is there a fan behind the radiator?

Macster

Yes, there is a fan located behind the radiator, one at each corner.

The noise could be from a fan motor, or something loose that is being hit by the radiator fan blades or as others have suggested something electrical like a control solenoid.

Probably going to have to have the front bumper cover removed along with the wheel and wheel well liner at the corner the noise is coming from so a careful visual inspection can made to determine the source of the noise.

atcbi5

Hook up the Durametric pro and run the front radiators at each of the three speeds. Have someone have a listen to the culprit