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A/C compressor will come on intermittently.

My A/C compressor will only come on intermittently. There is a charge in the system, I checked with a gauge and when the compressor does come on the air is cold.

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6ya6ya
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Posted on Jan 02, 2017

bestdarngood
  • 3037 Answers

SOURCE: AC doesn't blow cold air on 95 4 runner. Can I check compressor

Well, for one with the truck idling, the RPMs should increase every time that the clutch on the compressor engages. You should be able to see it engage and disengage and the RPMs will change accordingly. If this isn't happening then you need to determine why. Have the A/C blower on low when doing this.

Posted on May 29, 2009

emissionwiz
  • 75222 Answers

SOURCE: would i lose a freon charge in that time period what odds it needs more than a ch

does the AC compressor run under the hood? if not u have lost the charge out of the system and u have a leak..

Posted on Jun 01, 2009

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1. Check Drive Belts - The air conditioner utilizes a drive belt that supplies power to rotate the compressor, which is basically a refrigerant pump. If the belt fails the compressor has nothing to drive it, inspect and replace as needed to restore operation. If belt is intact proceed to the next step.

2. Check for Compressor Clutch Engagement - Turn the air conditioner to the "on" position and set controls to the coldest setting. Start the engine and allow to idle. Then open the hood and inspect the clutch at the front of the compressor, is it turning? "Engaged" if so, the system has enough refrigerant to activate. If the system is low on refrigerant it will not work properly. In this case an air conditioner recharge kit is needed to recharge the system. If the system is low on refrigerant it could cycle on and off, making a ticking noise. If the compressor clutch is not turning proceed to next step.

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4. Inspect Fuses - Check under dash panel and under hood power distribution center. Replace failed fuses as needed, recheck system. If the new fuse fails when reinstalled a short circuit is present and requires diagnosing with a wiring schematic, follow circuits to locate short, repair as needed and recheck system.

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