Date registered: Sep 2008
Vehicle: Mercedez Benz E320
Location: Baton Rouge, Louisiana
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Added R134a-fixed hissing sound, however ac fan runs fast on/of, did I overcharge?
I ran onboard diagnosis after refilling R134 a(approx 34 ounces) on the low pressure port per DIY.
1. Refrigerant pressure(on test #7) fluctuates between 13-17, up and down as time elapses while I perform diagnosis. Did I overcharge?
2. When I turn on AC, the fan by radiator runs very fast no weired sound but I have never heard it run that fast with a weeeeimng sound! The fan speed runs fast then gies down as along as AC is running. !Weeeeing......then slows down, then 'weeeing!!! Is this normal when AC is on? It feels like it is adjusting to cool levels automatically but boy it its is too frequent!
My post R134 pour, onboard diagnostic did not return any Error other than the E FF. Any advice?
7 14-17 This fluctuates
The gauge that came with R134a does not work well(why buy it and the car has onboard diagnostics? jut FYI
Last edited by jchumba; 11-29-2008 at 09:21 AM.