Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

auditorguy

2005 Polaris Sportsman 800 EFI Low Idle

Recommended Posts

Hi all  My sportsman 800 starts and runs fine but the idle is too low so it won't stay running even when it is all warmed up.  I know there has to be an easy adjustment to this but I cannot find it in the owners manual.  Anyone know how to adjust?  Thanks

Share this post


Link to post
Share on other sites


I don't think its adjustable without a special tool and the question is why is it low. I would try and clean the throttle body and check the throttle cable and make sure there is no dirt hanging it up. What year is it?

Topic title changed to: 

Polaris Sportsman 800 EFI Low Idle

  • Like 1

Share this post


Link to post
Share on other sites

It is a 2005 sportsman 800 EFI

I will check the throttle cable and see if I can find any hang up.

 

Share this post


Link to post
Share on other sites

check the voltage reading of the tips sensor. if not right vehicle let will not idle properly 

Share this post


Link to post
Share on other sites


@tristan6482 Thanks for the suggestion, I changed the plugs (which was kind of a pain) and the machine still wont idle well when first started but once warmed up it stays running.  Still seems the RPMs are low but it keeps running.  

Share this post


Link to post
Share on other sites

What is the reading of  your tps sensor. I belive it should  be .95 volts.

As stated  in my last post the only adjustment to the idle is the tps sensor. And there is not much adjustment on that 

Share this post


Link to post
Share on other sites
9 hours ago, colin james said:

What is the reading of  your tps sensor. I belive it should  be .95 volts.

As stated  in my last post the only adjustment to the idle is the tps sensor. And there is not much adjustment on that 

Hey Collin thanks but I am not sure what the TPS sensor is or how to get the reading you are asking about.

Share this post


Link to post
Share on other sites
16 minutes ago, auditorguy said:

Hey Collin thanks but I am not sure what the TPS sensor is or how to get the reading you are asking about.

Throttle Position Sensor 😉

Share this post


Link to post
Share on other sites

Should be on the side of the thotte boady with 2 screws with a 3 wire electrical conection. 1 wire will be 5 volt reference , 1 will be ground  and 1 will be the signal wire that goes back to ecu. If you have a hand held multimeter you can check check the signal by back probing  and setting meter to lowest DC scale. Or if you don't feel  comfortable testing the wiring and  can get to the sensor easily, start the engine loosen the screws that hold sensor and slowly rotate sensor 1 direction rpms should drop the other they should increase. Be careful and do not force anything. 

Share this post


Link to post
Share on other sites


Happy new year. So how did you fix the idle problem? I am also having a idle issue. It will run fine but will idle for a like 15 seconds then die. It will start just fine but won't stay idling. 

Share this post


Link to post
Share on other sites

@Nam Repus Nam I changed the spark plugs and that seemed to help some.  Once it is well warmed up it will idle now.  I need to get out my multi meter and follow the suggestions to check the signal but since I have been doing ok as is I have not taken the time to do that yet.  Good luck, happy new year to you too!

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By Chase Cook
      Have a 2001 polaris sportsman 500 4x4 atv and when I put coolant in the radiator it starts leaking from the exhaust. The valves are sealed but it stopped making compression. Do I need to just replace the head? I just rebuilt the hole top end and this is the only thing +valves that I have not replaced and was wondering if that is why it's not starting up. Need answers please.
    • By Ajmboy
      View File 1984-1987 Suzuki LT185 Service Manual
      1984-1987 Suzuki LT185 Service and Repair Manual
      Submitter Ajmboy Submitted 09/13/2020 Category Suzuki ATV  
    • By oxidized_black
      View File 1988-2002 Kawasaki Bayou 220 Service Manual
      1988-2002 Kawasaki Bayou 220 Service Manual
      The Kawasaki Bayou 220 is one of the most common all-terrain vehicles on off-road trails that is geared toward novice riders and families. It’s also one of the smallest and most inexpensive ATVs on the market, with a retail price under $3,500, as of 2010. The Bayou 220 is Kawasaki’s only ATV of its size. The 220’s sibling is the larger Bayou 250 equipped with a 228cc engine.
      Engine
      The Bayou 220’s engine is a 215cc, four-stroke, shaft-driven, air-cooled model. Its bore measures 2.6 inches and the stroke is 2.4 inches. It features a relatively high 9.3:1 compression ratio with fuel delivered through a Mikuni VM24SS carburetor. The electronic ignition is Kawasaki’s DC-CDI. It also features a recoil backup as a starting system. The clutch is an automatic wet multidisc model with power delivered to the wheels via a five-speed transmission, according to ATV Source.
      Chassis
      The steel frame supports a front suspension with single A-arms and twin shock absorbers, with the rear suspension a Quad-Link system with two shocks. Front wheel travel is 4.5 inches, while the rear wheel travel measures at 4.9 inches. Front and rear brakes are drums.
      Size
      The front tire size is AT21X8-9 with the rear tires measuring AT22X10-10. The ATV’s wheelbase is 43.9 inches, with an overall length of 68.7 inches. Ground clearance is 6.1 inches with the seat height measuring 28.7 inches. It weighs 403 lbs. and can tow up to 450 lbs. Its fuel tank can carry 2.6 gallons.
      Basics
      The Kawasaki Bayou 220 is not the fastest ATV on the market, but one reason the Bayou 220 has kept its price low is the lack of amenities. It features a brake light and dual headlamps with high/low beam. There is an auxiliary lighting terminal inside the front cover of the ATV and electrical accessory terminals under the seat. The instrument cluster atop the fuel tank features a fuel gauge, but not much else. There are no speedometer, odometer, hourmeter, tripmeter, high-beam indication or high-temperature light. It does have a reverse/neutral indicator light. The Bayou comes in two colors: hunter green and firecracker red.
      Features
      The front A-arm, twin shock and rear Quad-Link twin-shock suspension system is not a true fully independent system, but it allows for a comfortable ride over rough terrain without employing a complex and expensive, fully independent suspension system. The ATV features front and rear steel cargo racks. The ATV is rider-friendly with a limited adjustable throttle to help novices practice their riding skills without twisting the throttle too far and losing control of the vehicle.
      Submitter oxidized_black Submitted 12/14/2016 Category Kawasaki ATV  
    • By Rich1028
      Gladwin Trails Not What you Expect to Find on A Quad Trail
       
    • By cgilley
      Ran it out of gas last month... Works fine for 3 or so days then refuses to start.... Changed out the sparkplug and it will run for 15 or so seconds before shutting off.... Cleaned out the fuel system and injector and it misses when idling as well as shutting off at idle every so often... It is giving me no other issues and sounds and runs fine while riding... Only issue is cutting off at idle.....
      Ideas anyone??
  • Similar Tagged Content

    • By bodon
      Anyone know what the fuse terminal marked UNSWITCH  does  .  Even with the key off it is causing a drain on my battery and I'm trying to figure out  what that terminal goes to.  It's a 10 amp fuse. If I pull it the "short" goes away.  Thanks in advance.
    • By Outkast7222
      Had a spark-plug break off, had to pull the head to get it extracted. Where the heck is the timing mark on the crank? Do I need to pull the stator or flywheel to find it? When I pulled the head I had the mark on the cam lined up pretty good but I cant remember if it was perfect and don't want to reassemble a tooth off and have to go back through the bear of pulling this thing back apart.
      Thanks guys!
    • By Chase Cook
      Hi I just got an Polaris sportsman 500 4x4 ATV the other day. I got it real cheap but I started to go into it because it didn't have compression so I bought a new piston and ring kit for it and installed it, but now when I try to start it all it does is shoot fire out the exhaust or the intake of the carburetor. And a timing is top dead center.;I think I can't really tell another way if it is or not. when I put it together I made sure to piston was on top and the cam lobes where facing down where are the cam sprocket is facing up. It has gas and spark. It did start a couple minutes ago but it didn't stay running and now it won't start. Do you think the valve need to be adjusted more to close better?I'm fixing to try that out and if that don't work what is the problem? Also I made sure everything was together good and right and change the oil and changed out the radiator fluid.
    • By Brian Sosebee

      I just rebuilt my 03 sportsman 400. Put everything back together added oil per the manual. Pinched off the oil tank vent line 2" away ran for 45 seconds then cut it off. Check oil level and it was still way high so I wasn't confident that it primed so I did it again. Checked again and it's the same. Remove the oil filter and it is dry. I did the procedure again and the same results.

      I'm worried to keep trying this as the only oil in the engine is what I used to lubricate the parts when reassembling the piston. The crankcase was drained as well.
      I Removed the oil tank and checked all the lines for obstructions and the screen filter and the vent hose and everything is clear. I even pulled a small vacuum on the oil tank while it was pulled off to make sure there were no leaks. The dipstick cap was on tight so I'm not sure why this thing is not priming.

      Anyone have any suggestions. I thought about pre-priming the oil lines from the oil tank to the crankcase to hopefully help the system prime. I'd like to be able to add some oil to the crankcase to so I wouldn't feel so bad about running the engine for another 60 seconds without oil. I dropped just a little bit of oil in the spark plug hole to help condition the sleeve right now.

      What do I do? Anyone had or heard of an oil pump failure on these. Btw oil pump is working fine before I did the top-end rebuild and the oil pump was not touched.

      Please help!!! Thanks all for any and all help.
    • By jay rear
      Hi im new to the site. I have a 99 sportsman 500. I has been sitting for about a year now. I bought a new battery for it the other day and now i dont have any power to anything but the winch. Any help would be great. I already cut the pouch and checked voltage on both sides of the circuit breaker. 
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...