44 replies to this topic

['doobee]

While we wait for snow. Hoping for a little knowledgeable feedback on replacing the $250.00 exhaust temperature sensor and inserting a resistor. I had done it on my '05 Mach Z but only had a chance for a couple rides (150 miles) before a season ending melt down. I had installed a 230 ohm resistor to match what the value was on a good e.t.s. i had laying around. That was a room temperature resistance reading and was wondering if that was a fatal error on my part since exhaust temps would be much higher when riding her. I hear of guys tying them up out of the way and never having a problem.

[djm]

While we wait for snow. Hoping for a little knowledgeable feedback on replacing the $250.00 exhaust temperature sensor and inserting a resistor. I had done it on my '05 Mach Z but only had a chance for a couple rides (150 miles) before a season ending melt down. I had installed a 230 ohm resistor to match what the value was on a good e.t.s. i had laying around. That was a room temperature resistance reading and was wondering if that was a fatal error on my part since exhaust temps would be much higher when riding her. I hear of guys tying them up out of the way and never having a problem.

See the second chart on the attached thread.

Bluemax - Sensor Resistance Charts

[BlueMax]

doobee

Let me ask you this question and you can make your own decision. If you spend $250 on a new EGT (Exhaust Temperature Sensor) and tie it to the frame, what temp is the sensor going to read. Basically ambient air temp. Your 230 ohm resistor should work as well as installing a new sensor and tying to frame. The EGT is only used as a high limit and does not adjust any mapping until this temp is reached. Skidoo added this sensor to eliminate the chance of a muffler fire which happened to a few owners. The fires were actually a lot more prevalent in the 1000 SDI Renegades.

I wish Skidoo would have added a light that would let an owner know when the sled was in a protection mode. I think one of the biggest problems is many owners ran their sleds in a protection mode for extended periods without knowing and were running them way too lean on fuel/oil ratio. The ECU does not compensate oil injection for the protection modes. In some of the protection modes, the performance does not suffer that much but you do end up running the engine too lean on oil.

['doobee]

Knowing now that it is a high temp trigger only, I am comfortable assuming the bypass wasn't the problem. Yes tying it up out of the way will only feed it ambient temp.. I just didn't want to be a test bed for disaster.

[MXZX700]

Knowing now that it is a high temp trigger only, I am comfortable assuming the bypass wasn't the problem. Yes tying it up out of the way will only feed it ambient temp.. I just didn't want to be a test bed for disaster.

The EGT sensor will pickup a lean burn happening...ie bad injector...or low pressure pump going bad....when it picks up to much heat your temp light will flash along with a beeps if u can hear the beeps or see the light,IMO get one cause you need a fat walet if they go down......

If u need one PM me I have a couple of good USED ones $50 plus ship

[HUMFREEBOGIE]

The EGT sensor will pickup a lean burn happening...ie bad injector...or low pressure pump going bad....when it picks up to much heat your temp light will flash along with a beeps if u can hear the beeps or see the light,IMO get one cause you need a fat walet if they go down......

If u need one PM me I have a couple of good USED ones $50 plus ship

Hi. Old topic but thought I'd ask anyway. I just bought a 2006 Ski Doo Summit 600 HO SDI 146" and it needs an exhaust temperature sensor. Just wondering if you have a good used one. Thanks.

[SkiDoojunky]

Hi. Old topic but thought I'd ask anyway. I just bought a 2006 Ski Doo Summit 600 HO SDI 146" and it needs an exhaust temperature sensor. Just wondering if you have a good used one. Thanks.

no such thing as a "good used one" I am rocking 15,000 plus miles on a 230 ohm resistor...no problems....

[onapull]

Ok I'll bite....So which sensors would pull timing or add fuel without a CEL/fault code if any? CTS? Knock? Air presure? Air temp? EGT? TPS? Is Protection mode the same as Limp mode??
The way I understood it was Limp mode will show light a CEL and show up in the buds. Blue- help. lol.

[adrenalator8]

I'm sure blue will dispute this but I have run to it many times where I was at the lake running radar and the sled will lay down and run 120 mph all day long, after running one 126 or 127 run.
So I take it to the dealer and they put it on the buds and say "nothing is wrong" I say reload it and I take to the lake and it runs 126+ again.

The CEL light has never light on my sled put it sure as heck has layed down.

Since the 07 map has been installed this has never happened,

So that being said, taking any sensor out of the equation is a plus, and in reality by the time the sled see's the egt if there was a real problem it would be too late anyway.

So put a resistor in it and be done with it.

[Cliff James Randall]

I'm sure blue will dispute this but I have run to it many times where I was at the lake running radar and the sled will lay down and run 120 mph all day long, after running one 126 or 127 run.
So I take it to the dealer and they put it on the buds and say "nothing is wrong" I say reload it and I take to the lake and it runs 126+ again.

The CEL light has never light on my sled put it sure as heck has layed down.

Since the 07 map has been installed this has never happened,

So that being said, taking any sensor out of the equation is a plus, and in reality by the time the sled see's the egt if there was a real problem it would be too late anyway.

So put a resistor in it and be done with it.

Agreed 100%....My ECM has been cleared of all unnecessary sensors. Here is something else to consider on these Machs - if you're E-Raves do not open properly, full throttle creates tremendous heat in the cylinder and can cause a meltdown. Sadly I experienced this first hand.
Cliff

[BlueMax]

I'm sure blue will dispute this but I have run to it many times where I was at the lake running radar and the sled will lay down and run 120 mph all day long, after running one 126 or 127 run.
So I take it to the dealer and they put it on the buds and say "nothing is wrong" I say reload it and I take to the lake and it runs 126+ again.

The CEL light has never light on my sled put it sure as heck has layed down.

Since the 07 map has been installed this has never happened,

So that being said, taking any sensor out of the equation is a plus, and in reality by the time the sled see's the egt if there was a real problem it would be too late anyway.

So put a resistor in it and be done with it.

No dispute here. I believe your findings. Which map were you running when you lost top speed? I am sure you said before but I don't remember.

[adrenalator8]

No dispute here. I believe your findings. Which map were you running when you lost top speed? I am sure you said before but I don't remember.

I tired 05-06-06.5 and had very similar results with all, once I got the 07 map the issue ended and it ran with in 1 mph every time out, normaly 126.5 to 127.5 in trail form.

Not sure why, as I know there are guys that could make that 05 map rock, I'm wondering if it had something to do with the LONG pulls it took to run over 2000'???

[BlueMax]

I tired 05-06-06.5 and had very similar results with all, once I got the 07 map the issue ended and it ran with in 1 mph every time out, normaly 126.5 to 127.5 in trail form.

Not sure why, as I know there are guys that could make that 05 map rock, I'm wondering if it had something to do with the LONG pulls it took to run over 2000'???

Go figure. If BRP would have given out more information on how the protection modes worked, all of these issues would have been easier to address.

[GMTECH12]

a bit off topic, but when i put my crankshop twins on should i put the exhaust sensor in one of the pipes (already has hole and fitting) should i tie it to the frame and let it read ambient temp or just remove it and put a 230 ohm resistor in and be done with it?

[HUMFREEBOGIE]

no such thing as a "good used one" I am rocking 15,000 plus miles on a 230 ohm resistor...no problems....

Thanks but I'm not really sure how that is done to be honest. Someone would have to explain the process in Laymans terms.