Changed coolant, gauge doesn't register - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 15 (permalink) Old 02-26-2014, 08:29 AM Thread Starter
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Changed coolant, gauge doesn't register

So I changed the coolant. I never could get anything to squirt out the bleeder valve under the tank though I put 3/4 a jug of fluid in it. I did rock the bike back and forth on the center stand so any bubble would get released.

I rode to work yesterday, it was 39 degrees in the morning and maybe 60 on the way home. The gauge might have slightly moved but can't tell. There was some long stop lights in there. Usually the gauge would at least get to the second line and some times cross over it on it's way to the mid point.

Could it have stayed that cool?

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post #2 of 15 (permalink) Old 02-26-2014, 12:19 PM
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I doubt the gauge wouldn't move, I'm sure there's probably air trapped somewhere. Pop the cap and make sure there's not any bubbles coming out. Also make sure the wire on the temp. sensor is secured.

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post #3 of 15 (permalink) Old 02-26-2014, 03:49 PM
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what type of coolant did you use?
Are you sure you filled it up completely? did you see the coolant circulating with the cap off? do you see any coolant in the overflow?

sounds to me like a trapped air bubble.....either that of you used Engine Ice.
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post #4 of 15 (permalink) Old 02-26-2014, 06:00 PM
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Yer bleeder is prolly clogged too....its the same as a brake bleeder....get one for a Jap car at any auto place....28 cents methinks....



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post #5 of 15 (permalink) Old 02-26-2014, 06:39 PM
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Yep, it's air around the coolant temp sensor it is in the T-stat housing. Did you try the bleeder screw after you ran it a while and cooled it down,the air worked itself up there and it won't read in the air space,needs hot coolant to make it move. Or it's unplugged or has a bad connection.




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post #6 of 15 (permalink) Old 02-27-2014, 08:20 AM Thread Starter
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Quote:
Originally Posted by denny6006 View Post
Yep, it's air around the coolant temp sensor it is in the T-stat housing. Did you try the bleeder screw after you ran it a while and cooled it down,the air worked itself up there and it won't read in the air space,needs hot coolant to make it move. Or it's unplugged or has a bad connection.
ALL GOOD IDEAS! Maybe a new bleeder is the key or take out and clean the one I have. THANKS!!!!!!!!!!!!!!!!!!!!!!!!!

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post #7 of 15 (permalink) Old 03-03-2014, 07:54 AM Thread Starter
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So, filled the coolant up till it weeped out of the hole. Still nothing registering on the gauge. Tried touching the cable to the gauge on the frame and on the sensor housing, the gauge didn't do anything. Went to the headlight bucket and tried from the connector there. Still nothing. Could my gauge have coincidentally died during my coolant change?

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post #8 of 15 (permalink) Old 03-04-2014, 07:11 PM
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Its possible, sure...theyre made to read via like a sccrificial bimetal thingie inside....take the sensor out, and GINGERLY clean off that metal part that sticks in. Also make sure that where it contacts, is clean.



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post #9 of 15 (permalink) Old 03-04-2014, 07:20 PM
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Quote:
Originally Posted by Goofyfoot2001 View Post
So, filled the coolant up till it weeped out of the hole. Still nothing registering on the gauge. Tried touching the cable to the gauge on the frame and on the sensor housing, the gauge didn't do anything. Went to the headlight bucket and tried from the connector there. Still nothing. Could my gauge have coincidentally died during my coolant change?
I remember that if you touch the fuel gauge sending unit to ground, and watch the gauge it should jump over to full. I know the coolant sensor is tested by putting it into boiling water and seeing if the resistance changes it should go down.If you are getting no reading whatsoever on the gauge I would suspect a wiring problem going to the gauge or the gauge itself.

There is a procedure in the book for testing the sending unit and the gauge also. I would look it up and see as I am going on memory.




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post #10 of 15 (permalink) Old 03-04-2014, 09:41 PM
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Dennys right...I think it was Ol Hoss that posted it up....



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