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Forum Index > Suzuki King Quad > coolant temp sensor on engine / starting problems Sign up or Logon
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dahammer
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:08:41
Posts: 13
Logan Lake, British Columbia , Canada

Hey guys
I have searched hi and low and not found what I was looking for. I had problems with the 450 KQ not running right . It would stall under almos any condition but would fire back up . It was intermitant though so did not worry about it to much . I was on a hunting trip this fall and it started gettting worse. It would start losing power while riding and then just stall. I ended up limping back to camp a few times by firing it up and blipping the throttle to keep it going. It was acting just like a fuel problem. I took everything apart , lines and injectors and such and cleaned up. It seemed to run fine for a bit and then after an hour or so it would die on me again. It finally quit all together .

I ended up buying an aftermarket pump and replaced original as I thought for sure it was fuel pump problems . I looked down throttle body and could see no fuel spraying but it would fire up if I poored fuel in the body , but then it would eventually stall again. So I installed new pump and still would not start. I poored fuel in throttle body and it starts up and runs fine . Have ran for 15 - 20 mins and no stalling . But if I shut it off it will hardliy start at all unless I play with the throttle and barely then . If it is cold at all I have to prime the throttle body again to start it. I do have the fi light on all the time to . It gives me the c 15 code , coolant temp sensor.

Theres the details , now my ? is will the sensor cut the fuel off when starting the bike if it is faulty . I am hoping that I did not go through all that I did with the pump and waiting for it to arrive just to find out it is a simple sensor. I miss my bike after 4 months sitting in the shop and would appreciate any insite .

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07 450 King quad , Mudlite xtr, coop45 shimm mod
007 black king
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:12:59

Posts: 1440
Bland, Virginia , USA


You checked the tps, sounds like its out of adjustment.
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2006 Black 700 King [VDI ] BIG Injector, YFZ front shocks ,IAT relocated, ,Twin Air , 18 gram rollers,27 zillas and other stuff!
Triple J
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:17:51

Posts: 17643
Byron, Minnesota , USA




I do believe it will go into limp mode or shut down to keep from overheating the engine.
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. 2010 Metallic Desert Red Prowler XTZ 1000
27" Grim Reaper Tires/Home Made Roof/LED Tail lights/Home Made Doors/Adjustable/Seats/Custom Oh Crap bar/Tiger Tail-
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dahammer
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:36:02
Posts: 13
Logan Lake, British Columbia , Canada

On the dash it shows the line in the middle . It comes up looking like this when I throw the codes . -c15 . Does that indicate then that it is the tps and not the coolant temp sensor then.
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07 450 King quad , Mudlite xtr, coop45 shimm mod
Triple J
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:39:44

Posts: 17643
Byron, Minnesota , USA




No, the dash is the TPS location, the c15 is the code
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. 2010 Metallic Desert Red Prowler XTZ 1000
27" Grim Reaper Tires/Home Made Roof/LED Tail lights/Home Made Doors/Adjustable/Seats/Custom Oh Crap bar/Tiger Tail-
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dahammer
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:44:45
Posts: 13
Logan Lake, British Columbia , Canada

So I can assume the tps is fine then . I dont want to mess with it if i dont have to . I also assume that you get the codes with the bike not running . Just want to make sure I am doing it correctly .
Thanks

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07 450 King quad , Mudlite xtr, coop45 shimm mod
Triple J
Subject: coolant temp sensor on engine / starting problems2010-01-10 21:58:33

Posts: 17643
Byron, Minnesota , USA




Yes, you don't need the bike running.

As far as the TPS it needs to be checked when the bike is at operating temp.

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. 2010 Metallic Desert Red Prowler XTZ 1000
27" Grim Reaper Tires/Home Made Roof/LED Tail lights/Home Made Doors/Adjustable/Seats/Custom Oh Crap bar/Tiger Tail-
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Singlemalt
Subject: coolant temp sensor on engine / starting problems2010-01-10 22:25:19

Posts: 1679
Pitt Meadows, British Columbia , Canada


dahammer, I thought I was having a problem with the engine coolant temperature sensor on my 450 as well. I talked to Lyle at VDI and he sent me some tables and a test procedure for checking the engine coolant sensor by checking the resistance of the sensor through the quads wiring harness. They are about $100.00 CDN and it only takes a few minutes to do the test if you have an Ohm meter. If you are interested, send me a PM with your e-mail address. Mine tested OK.
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2007 Black King Quad 450, Runva 3500lb Winch, DJ Caster Mod, DJ UHMW Skid Plate, Quadrax Elite Front Bumper, Kimpex Rear Bumper and A-Arm Guards, Uni Air Filter, 25" Grim Reapers, 25 Gram Rollers, A-arm grease fittings.60" Tusk City Slicker Plow, Heated Handgrips, YFZ450-TRX450R Shock Mod, HID Lights, Coop's #3+ mod, E3.38 Spark Plug, CVT Rear Exhaust Mod, VDI, Dual Batteries
Singlemalt
Subject: coolant temp sensor on engine / starting problems2010-01-11 00:22:30

Posts: 1679
Pitt Meadows, British Columbia , Canada


Info sent as per your request
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2007 Black King Quad 450, Runva 3500lb Winch, DJ Caster Mod, DJ UHMW Skid Plate, Quadrax Elite Front Bumper, Kimpex Rear Bumper and A-Arm Guards, Uni Air Filter, 25" Grim Reapers, 25 Gram Rollers, A-arm grease fittings.60" Tusk City Slicker Plow, Heated Handgrips, YFZ450-TRX450R Shock Mod, HID Lights, Coop's #3+ mod, E3.38 Spark Plug, CVT Rear Exhaust Mod, VDI, Dual Batteries
dahammer
Subject: coolant temp sensor on engine / starting problems2010-01-11 18:53:17
Posts: 13
Logan Lake, British Columbia , Canada

well took the quad for a test ride and still doing the same thing , lacks power and after a bit starts to stall and backfire. I will test the sensor and go from there .I not sure where else to go with it other than change out the injector . Only other thing I can think that it could be is the ecu .
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07 450 King quad , Mudlite xtr, coop45 shimm mod
SGT_KQ
Subject: coolant temp sensor on engine / starting problems2010-01-11 20:58:13

Posts: 1400
Merrill, Wisconsin , USA


Did you fix the c15 code?
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2007 Can-Am 800 Outlander Max XT, HMF Penland Exhaust, 27" Zillas on Vision Outback Wheels MRRPM 840 Kit, Diamond G Cams, 09 Intake, 09 Twin Air, Fender Flares
2007 Suzuki Kingquad 700 Sold
CanadianCook
Subject: coolant temp sensor on engine / starting problems2011-07-17 16:28:08

Posts: 482
Prince George, British Columbia , Canada


Did this fix the C-15 code? Mine is not running right or at all really, soon as I start it the FI light comes on and it dies. I get the C-15 code when I do the jumper. Murray did you have to replace the sensor on your machine? Any help would be greatly appreciated.
Cheers
Travis

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2011 Honda Rincon, ITP Delta Steel Wheels, 25/10/12 Bearclaws all around and UMHW Skid Plate
Singlemalt
Subject: coolant temp sensor on engine / starting problems2011-07-17 17:06:17

Posts: 1679
Pitt Meadows, British Columbia , Canada


Travis, no mine was not the sensor, it turned out to be a faulty wiring harness. Lyle fixed me up. There have been several reports of the ECT sensor going bad though and the quad may or may not start. I believe the one in the 700 is the same as they are the same part number. Do you know anyone with a good one that will let you swap it out for a test?

Also make sure that the sensor array down the throttle body is clean and is not coated with any oil from the air filter. That will mess things up as well as the IAT sensor for the 450 is down there and it sends a signal to the VDI in conjunction with the ECT sensor to provide the starting mixture.

What did the quad start doing. Did you go swimming again?

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2007 Black King Quad 450, Runva 3500lb Winch, DJ Caster Mod, DJ UHMW Skid Plate, Quadrax Elite Front Bumper, Kimpex Rear Bumper and A-Arm Guards, Uni Air Filter, 25" Grim Reapers, 25 Gram Rollers, A-arm grease fittings.60" Tusk City Slicker Plow, Heated Handgrips, YFZ450-TRX450R Shock Mod, HID Lights, Coop's #3+ mod, E3.38 Spark Plug, CVT Rear Exhaust Mod, VDI, Dual Batteries
CanadianCook
Subject: coolant temp sensor on engine / starting problems2011-07-17 21:46:28

Posts: 482
Prince George, British Columbia , Canada


Well pulled throttle body apart, cleaned everything I could find and I am still getting the C-15 code. What it has been doing is run until warm, if I stop it will idle fine no FI light or anything to say something is wrong and sometimes when I go to get on the gas again it will stall and it fire right back up like nothing was wrong. The only thing that I have changed is I adjusted the valves today. I am so confused
Cheers

Travis

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2011 Honda Rincon, ITP Delta Steel Wheels, 25/10/12 Bearclaws all around and UMHW Skid Plate
Singlemalt
Subject: coolant temp sensor on engine / starting problems2011-07-17 22:23:26

Posts: 1679
Pitt Meadows, British Columbia , Canada


I hope you did not remove the sensor array from the throttle body as according to the shop manual, that is not good and can damage it. Is the VDI throwing the same code as the factory ECU? If so it is quite possible that it is your ECT sensor as when it goes the VDI defaults to 80C which can cause starting and running problems.
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2007 Black King Quad 450, Runva 3500lb Winch, DJ Caster Mod, DJ UHMW Skid Plate, Quadrax Elite Front Bumper, Kimpex Rear Bumper and A-Arm Guards, Uni Air Filter, 25" Grim Reapers, 25 Gram Rollers, A-arm grease fittings.60" Tusk City Slicker Plow, Heated Handgrips, YFZ450-TRX450R Shock Mod, HID Lights, Coop's #3+ mod, E3.38 Spark Plug, CVT Rear Exhaust Mod, VDI, Dual Batteries
CanadianCook
Subject: coolant temp sensor on engine / starting problems2011-07-17 22:37:30

Posts: 482
Prince George, British Columbia , Canada


I tore the whole thing apart carefully, cleaned out all the channels and the sensor with q-tips and compressed air. I never did check the codes with the VDI hooked up because tech tips said to use the stock ECU. I sure hope the sensor isn't to much, I got the quad all tore apart so it's easy to get to.
Cheers
Travis

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2011 Honda Rincon, ITP Delta Steel Wheels, 25/10/12 Bearclaws all around and UMHW Skid Plate
dahammer
Subject: coolant temp sensor on engine / starting problems2011-07-19 00:21:24
Posts: 13
Logan Lake, British Columbia , Canada

I finally got frustrated and took it in . I had the shop go through and they found a bad wire and repaired it . I got it back and it seemed to run fine bit it was still not 100% . I put new belt on and seemed better again so might have been over Erving maybe and hitting a limited value to . I have had a new problem of it just quiting and I think I may have a bit of condensation in the fuel . Added methanol an seems ok for now . I would go over your harness looking for any signs of wear on the wires or start chasing it down with a tester because might was a 500$ shop bill to fix that wire.
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07 450 King quad , Mudlite xtr, coop45 shimm mod
CanadianCook
Subject: coolant temp sensor on engine / starting problems2011-07-19 14:30:44

Posts: 482
Prince George, British Columbia , Canada


Well my dealer tested teh sensor for me and it's fine so, I off to tear the quad apart and start chasing wires yay me!
Cheers
Travis

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2011 Honda Rincon, ITP Delta Steel Wheels, 25/10/12 Bearclaws all around and UMHW Skid Plate
CanadianCook
Subject: coolant temp sensor on engine / starting problems2011-07-20 00:40:02

Posts: 482
Prince George, British Columbia , Canada


Woo Hoo ! Quad is running great again, turned out that a the black wire with orange stripe was broken inside the plug for the sensor, so we pulled the plug apart, fixed the wire and now all is good. What a frustrating problem, a big thanks to a friend of mine that knows more about wiring than me, he found the problem and then fixed the problem. So while we had the quad tore down to nothing I pulled every plug and harness, cleaned with contact cleaner and filled with dielectric grease. Thanks to Singlemalt and dahammer for your input and advice.
Cheers
Travis

dahammer
You think you have moisture in the tank? I had the problem of mine running rough, feeling under powered, backfiring, generally running kinda crappy and getting slowly worse. What it turned out to be was the fuel filter, have you changed that at all?

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2011 Honda Rincon, ITP Delta Steel Wheels, 25/10/12 Bearclaws all around and UMHW Skid Plate
Glenlivet
Subject: coolant temp sensor on engine / starting problems2011-07-20 11:18:42
Posts: 6471
Hope, British Columbia , Canada




Good find on your buddies part and yours, CanCook. Those are easy to miss, broken wire inside the insulation. The component tests good and the contact looks clean so we tend to assume the problem must be elsewhere.
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My King Quad
I do clutch machining mods, A-arm mods
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Forum Index > Suzuki King Quad > coolant temp sensor on engine / starting problems
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