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My radiator fan keeps on and of every 30 sec while idling on…

Customer Question
My radiator fan keeps...

My radiator fan keeps on and of every 30 sec while idling on volvo 670?

Mechanic's Assistant: What is the complete model and serial number of your machine?

Volvo 670 4v4nc9ehodn148422

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Noticed this morning. Haven't tried it to fix yet

Submitted: 11 months ago.Category: Medium and Heavy Trucks
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Answered in 6 hours by:
7/31/2017
Technician: Daniel Wilson,
 replied 11 months ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,833
Experience: Owner at DJ Wilson
Verified

Hi my name is***** will be glad to help. What is your engine make and model and any fault codes you have logged in the ECM?

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Customer reply replied 11 months ago
Hi Dan thanks for trying to help.Engine is D13 .My Ecu doesn't show any faults.And fan turns off and on while engine idling and when AC is on?
Technician: Daniel Wilson,
 replied 11 months ago

thanks for the update. So fan operation is normal with the AC off? So it is cycling on anytime the compressor clutch cuts on for the AC? If so check for low system charge not allowing the compressor clutch to cycle long enough. If okay check the high and low side pressure switches and wiring for problems. Let me know.

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Technician: Daniel Wilson,
 replied 11 months ago

Hi, Did you get this resolved?If so, Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated.

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