Quantcast
Jump to content


Recommended Posts

Posted

Recently acquired a 2017 Challenger 750. Previous owner ran it low on oil so I had to do a top end. Starts and runs but it seems to be running very rich. There isn't too much information available for troubleshooting the EFI system. Air filter is new and I even tried running with it removed with no change. Some of the parts are relatively cheap, so I did replace the IAC and the MAF sensor. Could this be related to the TPS sensor or which direction should I head in next? There doesn't seem to be any adjustment on the TPS and I have read something about a WOT ECU reset but that didn't change anything. 

Thanks in advance

 

  • Alex changed the title to 2017 Cub Cadet challenger 750 runs rich
  • 1 month later...
  • 1 year later...
Posted

Check the 02 sensor connector. It has 4 pins and one of the pins on my unit was complete rotted away. Cut out both connectors, spliced wires together.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Similar Topics

    • By hisun junk
      As I tried to do a conversion with the Yamaha 660 motor, I realized the 660 was never fuel injected so it would not work for the fuel injected hisun motor swap. But the good thing is the hisun 750 motor is a clone of the 660 Yamaha but with the components for the fuel injection (cam/crank position sensor). So that left me with a new rebuilt Yamaha 660 and still a broke 750 hisun motor. I took apart 750 think the timing chain had broke from all that I've heard about these motors. The chain was not broke, but just off cam and crank gears! The chain tensioner was at fault!  I've ordered Yamaha 660 replacement parts, chain, two exhaust valves (which got bent when chain came off while motor was spinning) and seals. The piston has 2 little nicks where it had hit valves but no damage otherwise. The head is being redone at the machine shop and I'll be putting it back together in the next couple of weeks. Also I finally tracked down a Service Manual with all the info on the 550/750 Challenger.

    • By Poppateets
      I just purchased a used 2023 Massimo warrior UTV SxS 1000mx with 600 miles on it. I didn't even get a full day of riding and the driver's side rear axle broke. I'm pretty sure it was already going bad because we would hear a noise once in a while. I'm wondering if anyone else has had problems with theirs. Also looking for places to buy accessories.
    • By rev6engines
      Black Friday is here, and we’re excited to give our offroad family 20% off on all parts and kits! Whether you're prepping for new trails or just fine-tuning your rig, we've got what you need to keep rolling. Now Is also a great time to upgrade your sled, winter's coming fast!
      If you have any questions or need help finding the right part, feel free to call, text, or email us. We’re here for you!
      Call or Text:
      801) 489-8697
      Email at:
      [email protected]
       
      Happy riding!!! 🤘

    • By Jacob E freeman
      I have a 2018 cub cadet challenger 750 I bought brand new almost 2 years ago the first month I had it the exhaust broke and burnt the spark plug wire in two that was a recall so the dealership installed the new one it had a different design and it bolted up to the bottom two plugs below the spark plug the dealership said they had to Adjust the exhaust valves I get the machine back thanking everything is good now wrong not even a week after I get it back the timing chain tensioner comes apart inside the motor I take it back to the dealership They put one on I get the machine back thanking everything is good but then just like before not even a week goes by when I was riding the Machine automatically quits going come to find out the wet clutch was burned up the primary clutch head stripped off of the splines I get that fixed and then  it overheats I take it back they bleed the air out of the coolant they bring it back to me the same day that I get it back it overheats again I take it back they temporarily fix it again just enough to let the warranty run out and now the machine has been to multiple different mechanics I have had them try to bleed the air out they have stood it up on its end I have had the water pump changed I have had the fan hooked to a switch so I could leave it on all the time but still almost 2 years later not even 200 hours on the machine and I cannot ride it The dealership will not take it back as a lemon I have tried I am at my wits end I have no clue what to try next
    • By Gerald Mohs
      Have a 2023 massiso T-boss 750 stopped one day and won't start. I've checked the fuel injector and has good spray. New spark and has spark. Need advice on getting the trouble codes. What code reader do I need to purchase? Thanks for any help. Jerry 
×
×
  • Create New...