With the outside temps running well over 100 plus here in Sin City, my 928 started showing signs of running hotter than normal. The temp gauge always reads just a needle width above the first white line. Even with the A/C on it never goes above the middle of the gauge. Wendsday the gauge went above the second white line and almost into the red. The PO did a TB/WP job on the car just before I bought it, and have only put 9500 miles on it scence that time.

Yesterday I started looking the car over and found that there was a ton of debris in between the A/C condenser, and the radiator. I took the top devider that holds the radiator hose that runs from the top of the drivers side to the expansion tank off and fabricated a plastic tube to fit my shop vac to suck all the garbage out from between the two coils. Still my radiator was clogged with dirt and debris, and spraying with water didn't do anything.

I did a google search and came up with a product that is cheap and does a fantastic job of cleaning the coils on the condenser, oil cooler, and radiator. It's called A/C Safe, air conditioning coil FOAMING CLEANER. It states on the can that: " this product may be used on automotive radiators." I only used half of the can and it sprays in any position to compleatly clean the coils in my car. I let it set for 10 mins, and washed it off. Aluminum radiator look new, and my temp gauge is back in the middle again. At less than $5.00 a can this is something that is very easy to use, and cheap. It really does the job. FWIW.

 

I've also found that blowing compressed air from behind the radiator is quite effective. Expect a cloud of dust that will blow out the front.

Rich

 

Good find and good job.
Never fun to see that gage going up!

 

Available at Home Depot. Store SKU # 380194.

When I cleaned mine I found LOADS of cigatette butts and other strange road debris between the radiator and condenser.

 

Hmmm. Another duty to add to the list! Great info on the product and the source. Mine isn't running hot, but the air temps haven't been past the low 80's here yet either. I feel a HD itch coming. After the ALMS race is over.