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follow Erics video on a/c diagnosis or a/c leak detection. I forgot the exact name of the video, however, there is a possibiltiy of a leaking evaporator if you are smelling engine smells. If you are smelling fuel, then that could be an entirely different problem. The clicking of the a/c compressor is the clutch engaging and disengaging due to either improper refrigeration charge, or possible bad pressure switches (if applicable)
Quoted From techhotline7:
follow Erics video on a/c diagnosis or a/c leak detection. I forgot the exact name of the video, however, there is a possibiltiy of a leaking evaporator if you are smelling engine smells. If you are smelling fuel, then that could be an entirely different problem. The clicking of the a/c compressor is the clutch engaging and disengaging due to either improper refrigeration charge, or possible bad pressure switches (if applicable)
I figured it was the clutch engaging and disengaging but couldn’t figure out why. I have a feeling it’s a refrigeration charge issue simply due to the fact that so many things had to be removed in order to get to the timing belt, including moving the compressor out of the way, back and forth, etc. Can you tell me where the evaporator is? I’ve looked at vacuum diagrams but can’t seem to make heads or tails of them. And I did watch a video from Eric on A/C leak issues but when it came to my particular truck, I just wasn’t following it too well.
The evaporator is in the dash, check under the hood for where the ac lines go into the firewall. Thats where the evaporator lives
Quoted From rice400:
The evaporator is in the dash, check under the hood for where the ac lines go into the firewall. Thats where the evaporator lives
Great. Thanks so much
If your smelling fuel then you must have a fuel leak.
A fuel smell has nothing to do with the ac. check your
fuel lines for leaksIt sounds like you might have a couple of problems. As for the AC clutch it could be that you have a low refrigerant charge which could cause that condition, in order to verify this you would need to hook up a set of gauges and perhaps look for leaks, this is the video that everyone is referring to.
http://www.youtube.com/watch?v=95RdGLFIbL8
As for the air only coming out the defrost this is the default setting of the HVAC and if your’s is vacuum operated and by the sound of it it could be, you might have a vacuum leak somewhere causing the vents not to direct the air where you want it to go.
It’s probably a good idea to go back and check all your work to make sure everything is hooked up correctly also.
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