C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

I really need some help here

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Old Dec 26, 2007 | 06:09 PM
  #1  
davenbocafl's Avatar
davenbocafl
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Default I really need some help here

i have converted to 134 on the a/c but when the radiator fan is off the high side goes to 450 plus and still climbs, when the fan is running pressures are 28/210 and cools great, like i have a restriction in the line, i hate to be a pest,but im going nuts over here. thanks dave
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Old Dec 26, 2007 | 08:34 PM
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From: Carmichael ca
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The fan isn't running enough. It should come on before the pressure gets that high.
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Old Dec 26, 2007 | 09:00 PM
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before you replaced the freon did the system operate normally?
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Old Dec 26, 2007 | 09:57 PM
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when the ac is on all your fans should be running and if their not that'll cause the pressures to skyrocket.
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Old Dec 27, 2007 | 09:33 AM
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the ac was running fine, i was just replacing a compressor bracket and fixing some leaks, i have a hypertech sencor on the fan and it kicks in at 175, but it does not turn on when i first start the car and the ac is on, this acts like theres a shutoff valve in the freon system that closed when the fans not running. i would like to bybass that valve if there is one, i think that may be the proplem,the fans not coming on when i first start the car and the ac is on.

Last edited by davenbocafl; Dec 27, 2007 at 09:37 AM.
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Old Dec 27, 2007 | 07:51 PM
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Default 134

Sorry if I missed it but what year model is it? also when the system was reworked for 134 was orfice tube changed out at the same time?
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