Fans on all the time

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#21

05-26-2018, 03:11 PM

Ranchero50

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Quote:

Originally Posted by Busyb187

ok I did that. It gives me cylinder misfire codes. All the codes I get are P0300, P0302, P0304, P0306, P0308, and P0316... and on the car’s screen I get the battery not charging and when that started I also started getting the “cars system failure” warning.

Quote:

Originally Posted by sov211

All of this points to a low voltage output from the battery. BATTERY!

Kind of a chicken or egg thing though. If the low battery voltage is causing the system fault to run the fan which runs the battery down and it won't reset with a charged battery where do you turn to next?

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#22

05-26-2018, 08:51 PM

Busyb187

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Quote:

Originally Posted by Ranchero50

I'd pull the F35 80 amp fuse in the power distribution panel. It's the main power feed to the fan. It'll cost nothing and see if you can get some of the other stuff to clear while letting it run for a couple minutes

Keep note of what fault you have and see what changes if you can get it to charge.

Kind of a chicken or egg thing though. If the low battery voltage is causing the system fault to run the fan which runs the battery down and it won't reset with a charged battery where do you turn to next?

ok so i just put a brand new battery. Took fuse F35 off aswell. Still says battery not charging. With car on shows 11.77 voltage. With car off it was 12.09 first. Now after turning off the battery voltage shows 11.87.

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#23

05-27-2018, 07:47 AM

Ranchero50

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Charge the battery... It should read 12.3 or so at rest with the cables off, ideally 12.7 when fully charged. Sounds like your new battery isn't charged completely.

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#24

05-31-2018, 07:45 PM

Busyb187

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OK I wanted to thank everyone for their help to start. I changed the alternator today and problem solved. Fans work normal, no longer get the red battery not charging warning, and even the misfire with the cylinder codes went away and car is running nice and smooth now. Once again, thanks to ALL who replied and helped me out.

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The following 5 users liked this post by Busyb187:

JagV8 (06-01-2018), NBCat (06-01-2018), Patrick Wong (06-01-2018), ralphwg (05-31-2018), Ranchero50 (06-01-2018)