Low Pressure Switch

OleBones1953 · Post by **OleBones1953** » Sat Jul 11, 2020 1:19 am

New to forum and trying to get my 2002 Chevy Silverado AC working. Is it necessary to evacuate the system to replace the low pressure switch?

Post by **Tim** » Sat Jul 11, 2020 8:23 am

No, if you speaking of the switch on the accumulator.

JohnHere · Post by **JohnHere** » Sat Jul 11, 2020 8:39 am

I'm curious as to why you think the LP switch is bad. Are there any other components that you suspect might be leaking and/or defective as well? If so, and if the system hasn't been serviced in years, I'd go ahead and recover the charge, or have it done, then repair and replace whatever is necessary.

OleBones1953 · Post by **OleBones1953** » Sat Jul 11, 2020 11:17 am

About half of the time I have to jump it out to get the clutch to kick in and that is on a fresh charge. Have checked the connector and wiring and it all looks good.

OleBones1953 · Post by **OleBones1953** » Sat Jul 11, 2020 11:19 am

Tim wrote:No, if you speaking of the switch on the accumulator.

Thanks for the reply.

JohnHere · Post by **JohnHere** » Sun Jul 12, 2020 8:08 am

Have you also checked the clutch gap with a feeler gauge? If it's wider than 0.020", the clutch might not engage, especially an older unit when it heats up.

Automotive Air Conditioning Information Forum

Low Pressure Switch

Low Pressure Switch

Re: Low Pressure Switch

Re: Low Pressure Switch

Re: Low Pressure Switch

Re: Low Pressure Switch

Re: Low Pressure Switch