How to play Cat C15 fan clutch and switch?

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What’s the problem with my Cat cooling fan?

A few weeks ago I had a problem with my 97 Volvo 3406E; the fan would not come on. So I put in a switch to turn it on when needed. Now i have this 2002 International with the opposite problem. The fan cycles off and on about every 3 minutes. 3 on; 3 off. It does this all the time. Weather idling, road speeds, or A/C on or off.

How often does the cat cooling fan cycle?

The fan cycles off and on about every 3 minutes. 3 on; 3 off. It does this all the time. Weather idling, road speeds, or A/C on or off. Engine temp never goes above 190*. Anyone have any ideas what is causing this?

How often does the engine fan stay on?

Discussion in ‘ Trucks [ Eighteen Wheelers ] ‘ started by tkilby, Jun 23, 2010 . 05’ Pete 379 with a Cat ACERT: The last few day’s the engine fan has been staying on 90 % of the time. The air solenoid on the firewall has no power and the manual rocker swich has power only on one side “the yellow/orange wire”.

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How to manually turn on the engine fan?

Installing a fan override switch to manually turn the engine fan on. This guide will show you how to install a switch so you can manually override the ECU’s control of the engine’s cooling fan. This can be useful in several cases. Firstly, the ECU will not turn on the fan itself until the engine is quite a bit over the normal operating temperature.

How do I Turn on the fan override switch?

Using the wire stripper, strip 1/4″ from the end of the green wire going down into the engine bay away from the fuse box. Look closely at the diode and note that one end of the diode has a white stripe on it. That end is the cathode. The other end is the anode.

Which is the service manual for a caterpillar?

CAT PDF Service Manuals – The CAT PDF service manual contains information on how the major operating systems work, testing, adjusting and troubleshooting guides, as well as disassembly and assembly procedures for your Caterpillar. CAT Parts Manual PDF – The CAT PDF parts manual has exploded views of all serviced parts on the equipment.

Why does my Peterbilt fan switch not work?

The ECM will show exactly what pin the AC and manual fan switch is programmed to. It’s also possible someone changed the programming and all you need to do is program them. If they are programmed, you can also check status screen and see them work. If they are programmed, and not working, it may be an ECM problem.

Where is the AC switch on a Peterbilt?

The reason I ask is because the AC switch and the manual fan switch can be wired in series on the wire from pin 11. Or they can be wired directly to the engine ECM and report independent of the wire 11. If you have a service tool you can go into configuration screen and see the programming.

What’s the problem with my C15 cat engine?

C15 cat problem is fan Will NOT shut off can you tell me which sensor and where It is that controls fan clutch thank u … read more Vocational, Technical or Tra… Vocational, Technical or Tra… Vocational, Technical or Tra… 2006 Columbia C13 Cat. Enjine fan runs continuously, not letting 2006 Columbia C13 Cat.

What kind of engine does a Kenworth W900L have?

Drive a Kenworth W900L with C-15 w/ twin turbo, fired up one morning started missing at idle and through the gears. After changinging fuel filters with no result we put it in shop and found #1 and #2 injectors bad.

Can a cat engine keep the fan on?

Cat engine..fan stays..the solenoid and the ac valve and it stills on… I have 05 kw t800 heavy haul. C15 cat problem is fan Will I have 05 kw t800 heavy haul. C15 cat problem is fan Will NOT shut off can you tell me which sensor and where It is that controls fan clutch thank u … read more Vocational, Technical or Tra…

Why does my engine fan keep coming on when the a / C is off?

You could have a bad high press switch on the A/C. Thats the swtich that will turn the fan on when the A/C is on and say your not moving to get air flow. Unplug the swtich and put a jumper wire on it and if the fan stops you found your porblem. They can go bad and make the fan stay on even with the A/C off.

Is the a / C switch fan in high mode open?

The “Fan with Engine Retarder in High Mode” is programmed to “YES” and the retarder has been on at least two seconds. The “A/C Switch Fan On-Time” is programmed to a value above 0 and the A/C high pressure switch is Open.

How to play Cat C15 fan clutch and switch?