03 RMk wont hold RPM

[whoisthatguy]

The thermister screws into the top of the cylinder head. It measures coolant temperature. It completes the electrical circuit when the wires are good and connected, like a kill switch. When the wires break, the engine won't start or run. Then in an emergency you need to fashion a little wire that you can connect the two ends of the wire harness plug that attaches into the thermister connector plug. The thermister pigtail wires are supposed to extend straight up out the top. The polaris dealers around my parts will deliberately kink that pigtail wire, break the plastic wire insulation and weaken the now bent copper wiring. Use a zip tie to make a nice gentle loop in this wire to double back on itself, and tie it too itself. All without breaking or kinking this pigtail. If it is already kinked, then you need a new one.

 

[Mtn Escape]

My 03 Escape had a problem with running out of fuel. Especially on long hills. Found out to be the the pulse line to the fuel pump was being kinked by the air box.

 

[indydan]

Holy cow!!!!!!!

I have been out of the loop for to long..........

Ok I have to do some reading to catch up on this thread.

and then I will explain a few things that i said......I can understand why some would be confused as to why I said go up in angle it it was not pulling RPM. I will expalin after I read everything so I am up to speed with everyone.

 

[indydan]

elevation

JohnnyH what elevation are you riding at ???

lowest to highest and average.

Dan

 

[JohnnyH]

Unload around 7,000 ish and up to close to 11,000 ish

 

[indydan]

Ok, this threads to long to read everything.

I skim read enough to see whats up.

And yes I said a bigger helix, 60/40-.46 is or 60/42 .46 is a great 800 TEAM helix the 150/250 area spring depending on conditions and rider weight. 140/240 to 160/260 should be the low and the high.

58/38 is borderline to flat depending on the rider weight and gear ratio in the chain case.........IF the ride is heavy enough and the gears are a little to tall the driven will pull against the drive clutch when you hit the deep stuff to back shift and will not upshift fast enough and drag the motor down and or over heat the clutch or clutches depending on which one is most unhappy at that point.

Johnny I believe someone has touched on whats wrong with our sled aslo and that sounds like jetting to me........Also the 2003 Escape needs a OEM Polaris fuel pump relocation kit because the impulse line is to long and the pump needs to be moved from the oil bottle to under the air box they have a cool little bracket that makes this simple.

Your jets are to big........If you have an SLP intake on that thing you should be running right around 300 mains.

If you are a lite weight guys and have low gears you can get by with the 58/38 no-problem.

Keep in mind that center center distance has alot to do with what helix and what drive weights you can pull.

a long center to center will tend to like - lighter weights and steep helix

and a short center to center will tend to like - Heavier weights and pull like a frieght train with a slightly flatter helix.

Center to center distance is the very reason why to sleds that may appear exactly the same can and will not perform the same with the exact same clutch set-ups.........I.E. Belt length.....& belt shear have a unbelieveable effect on clutching.

example..........Lets say all is performing well with an old belt AND then after the install of a new belt that lets just say that it is a little short........( in effect the sled will act like it has a long center to center ) the the sled will have a hard time pulling RPM.

And all these effects tend to be a little different depending on what driven clutch you run some driven are much more sensitive to this then others.

Johnny H theres a few things to chew on for now.

Dan