ST1100 - She's Giving Up Smoking Like A Cigar But Now She's Hot!

Erdoc48 said:
This would be me as well. Maybe a stupid question, but when you’re putting a new engine in, do you do all the rehab for it (new hoses, new timing belt, etc.) before installing it? Best of. Luck on the test run!
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Nope, not on an engine with 23,000 miles. ;)
I do check the hoses, water necks, etc. but not the timing belt - they are thankfully way overengineered for the job.
 
Well, with the 'new' engine with only 23,000 miles on it, the 'heat' problem has returned. :(
What is known -

1. Plenty of Evans Waterless Coolant.
2. Water Pump has only 23,000 miles on it.
3. The new Honda Thermostat only has 5,000 miles on it.
4. The Electrical Grounds were sanded and cleaned before connected to the 'new' engine.
5. The Honda Temp Sensor only has 5,000 miles on it.
6. The tube from the overflow bottle is in good shape on both ends.
7. Fluid level in the overflow bottle is between the 'marks' as it should be.
8. The fan is coming on when it gets to a certain temperature.

The only things that have not been replaced are -

1. The Temp Gauge
2. The Radiator
3. Radiator Cap (although I did take one from the parts bikes and tried it just for grins - no difference)


What I am seeing is once the engine gets 'hot' (not in the red hot but the gauge needle is as far to the right as it should be to the left),
it cannot seem to cool down - this is even running 20 miles down the interstate at 75 mph - the needle never moves back to the left).
It can't seem to dissipate the heat for some odd reason.
It seems I never have the simple things - it's always the weird stuff ... :eek:

Ideas? But please read the list above first. ;)
 
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OK so here is a wierd one I just ran into with the temp gauge. I chased down a loose ground in the spring that was maiking my gauge act weird. That fixed it. Then just beofre WiStoc I was doing some maintenance had taken the ground bolt off, I don't remeber why btw. Anyways when I put it back together my gauge started acting weird doing the same thing running at 12 O'Clock or more. Instantly when the fan finally kicked on just below the hot line the fan kicked on and temp spiked. Yes once it got hot it would not cool down either. I got home and started looking for a loose ground but found nothing. So I am thinking basic wiring stupid! Then I think metal frame touching metal on the ground wire, then rubber bushing for bolt to go through. Metal, Metal, Insulator (that rubber bushing). So I added a washer so the ground wire was sandwiched between metal. that instantly fixed it.
 
PmodelinUS said:
OK so here is a wierd one I just ran into with the temp gauge. I chased down a loose ground in the spring that was maiking my gauge act weird. That fixed it. Then just beofre WiStoc I was doing some maintenance had taken the ground bolt off, I don't remeber why btw. Anyways when I put it back together my gauge started acting weird doing the same thing running at 12 O'Clock or more. Instantly when the fan finally kicked on just below the hot line the fan kicked on and temp spiked. Yes once it got hot it would not cool down either. I got home and started looking for a loose ground but found nothing. So I am thinking basic wiring stupid! Then I think metal frame touching metal on the ground wire, then rubber bushing for bolt to go through. Metal, Metal, Insulator (that rubber bushing). So I added a washer so the ground wire was sandwiched between metal. that instantly fixed it.
Click to expand...
Which ground - the 'main' ground for the bike (the battery cable) or a wire on the gauge?
I don't know what 'rubber bushing' you are talking about. o_O
 
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