Upper radiator hose collapses when I snap the throttle????

juiced_94gt

Active Member
Mar 30, 2005
1,143
0
36
Southern California
When I have the engine Idling and I snap the throttle the upper radiator hose colapses then returns to shape...what does this mean? is it a problem? I just burped the system and it's still doing it.

Does this cause any kind of cooling issues? today it was 90* around here and the car runs fine until I hit a hill and then the temp climbs instantly to the M-A in "NORMAL" and will creep past it if I dont blast the heater, all the cooling systen is new except the fan and both speeds kick on, with the dyno tune te fans were set to start up earlier and when the temp outside temp is around 70* it doesent matter how I drive my car the temp stays at the O-R, What is causing this? it's my DD and I need it to stay cool ALL the time.
 
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