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Messages - impact1

#1
UForce 500 / Re: Top Speed
June 06, 2020, 06:45:51 PM
Personal best with 2 guys on board was 89 KPH on a flat level paved road.
I rarely go over 20 KPH though.
Mostly used as a utility machine.

#2
UForce 500 / Re: UForce 550 ergonomics
May 26, 2020, 03:12:46 PM
Same machine. Simply a bigger engine. I find the seating very comfortable.
#3
UForce 500 / Re: Shifting into park!!!!
May 26, 2020, 03:10:56 PM
I slam mine into park and different gears since new. Something I got used to doing.
Sometimes I need to slightly rock the machine front to back with my body shifting in the seat if you know what I mean for it to properly engage.
It seems to depend on the terrain and incline I am parked on at the time. Usually better on level ground.

I am certainly not gentle with it if I compare with my SUV. I gave up running to dealers but have them look at it if yours is still under warranty.
#4
UForce 500 / Re: Double whammy
May 26, 2020, 03:04:57 PM
Allright! Fast forward 3 months later today and finally got the parts direct from China.
The economy is slowly starting to roll again after this lock down with this new normal.
I was running my UTV with a shorted relay bypass so the fan was always on to prevent overheating.
It worked OK but was annoying.

Anyways, I proceeded to remove the PITA covers to get at the engine. What a chore that is including having to remove the drivers seat for better access. I started with what I thought would be the easy part which was replacing the radiator mounted thermo switch for the fan.

Nope! After I did the swap I suddenly realized that the connection was different.
Snip the wires and made a match.
Tested and works fine. The fan starts cycling at 80C

Next, my temp gauge was not working so tore into that looking at the ground side of the temp sensor.
Sure enough I was measuring 1.1K ohms. Way too much of a resistance to make that sensor work properly.

Took the housing apart and found corrosion on the bolts and the mating surface.
Shined everything up with emery paper and the gauge started working again.

Since this is a low mileage machine I decided to improve on the grounding aspect of that particular sensor.
I do not wish to have another repeat and feel this is a problem area and poor design.

So, utilizing a 1 inch gear clamp and a piece of 12 gauge wire I provided a secondary ground to the thermostat housing.
The engine ground bolt is conveniently located only 4 inches away so tied the other end right there.
I put a light coating of dielectric grease after I was done to repel water and resist corrosion.
I left a generous loop to absorb engine vibrations and all is good again.
At least now if the fan thermo switch fails I will get advance warning.






#5
UForce 500 / Re: Double whammy
February 23, 2020, 02:26:03 PM
That is an excellent tip.
Yes, the gauge stays at one bar and last fall for maybe half an hour it worked again and then stopped.
I did temporarily ground the engine with a booster cable right to the battery terminal but that never helped any.
What you are saying makes a lot of sense and when I receive the new sensor I will follow your procedure and clean up that area. Probably will check with my OHM meter first. It is a real pain to get into with having to remove the plastic panels and seat.

I will post my results in about a month once I receive the parts from overseas and tackle this little project.

Edit: Looking at the manual and thermostat housing assembly I may simply add a 14 gauge wire under one of the cover bolts to a solid ground.
In my opinion that would prevent future corrosion problems that may re-occur between the 2 mated surfaces.
I will look at that option as well. Lots of vibration though so not sure how well that would hold.
#6
UForce 500 / Double whammy
February 22, 2020, 12:17:42 PM
Last fall I noticed that my temp display was not registering anything even after an extended period of time on the trail.
No symptoms of over heating but decided to proceed with due diligence anyway. I pulled out the coolant temperature sensor and proceeded to check it out by heating water in a pot and checking resistance as the temperature increased. It behaved as per the diagnostic procedure in the service manual. Next, I checked continuity from the sensor right up to the display and all appeared OK as well. I chalked it up to a defective display and not about to change that expensive part. No biggie I said to myself. I can ride without it.

In December even though it was -10C after about an hour of technical slow riding the MIL light came on solid. No problems detected and it cleared itself once I parked overnight. It was fine in the morning. I did take notice at that time that the fan did not seem to come on or certainly not as frequently.

Fast forward to today. A balmy +2C so decided to look at the issues a little deeper. I brought up the temperature of the coolant to 90C as measured with an external precision thermometer and the fan never came on. I jumped the themo switch wires and the fan kicked in without any issues.

So, long story short I just placed an order with Alibaba for the thermo switch and the coolant sensor just for the heck of it.
Total price including shipping $49 CAN.

UFORCE 2016