Goes like this.
Turn on A/C, no fans. A/C begins cooling and pressure rises on high side, low side goes down as expected. High side continues to climb until 350 psi when compressor shuts off and the cooling fans come on. At about 100 psi COmpressor turns back on and fans are still on keeping pressure at 150 psi. Then fans turn off and pressure rises back to 350 psi where cycle strats all over again.
What I know. I think A/C high pressure switch is fine (replaced anyway) and A/C clutch switch is good. I am not sure about the CCRM (Constant Control Relay Module).
Assumption. I do beleive cooling fans should engage immediately when compressor turns on. SOme I am thing CCRM or fuse or?
Anyone know of any test I can run to help find out why fans do not come on with A/C switch?
have the same problem?
Sunday, March 16th, 2008 AT 12:56 PM