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2004 rxp 1500 sc
- Thread starter chippies1
- Start date
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supercharger
If the supercharger is not spinning then you have some work ahead of you. Normally it doesn't initiate limp mode. Usually see 55 mph max and 6600 rpm max.
rotaxmech@aol.com
If the supercharger is not spinning then you have some work ahead of you. Normally it doesn't initiate limp mode. Usually see 55 mph max and 6600 rpm max.
rotaxmech@aol.com
Press the "SET" button 5 times when the ski goes into limp mode. A code will be displayed on the gauge (P ????). Report back with the code. Also, like rotaxmech said, if the supercharger isn't turning when the engine is running then you got other big issues. Good luck.
Michael211_2000
Well-Known Member
Are you saying the SC doesn't spin when the engine is running, or that it can't be spun manually (with the engine NOT running)? There's actually two different ways to read your statement "I checked the supercharger and it's not spinning".
- Michael
Michael211_2000
Well-Known Member
Dennis that's what he said I do believe... with the engine off, he cannot spin the SC wheel by finger (ergo, spinning it manually). So the problem is not likely SC related.
Besides, I could be mistaken but I don't think a SC failure would cause the engine to go into "limp mode" (a condition imposed on the engine by the engine control module)... it simply wouldn't have as much horsepower as it normally should. Right? There're no sensors on my 2006's SC, and I presume the 2004 SC also has no sensors on it.
If it was an automobile, I'd guess that a sensor somewhere has failed triggering a "limp mode" condition by the ECU in response to the bad sensor readings. The question of course is which sensor is causing the "limp mode"?
- Michael
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Michael211_2000
Well-Known Member
While I don't think this issue is SC related... you can turn the SC impeller wheel by fingertip by applying some pressure, correct? It should be able to be turned manually, but it should not be easy to turn. If it turns with very little pressure then there is a SC problem. If it resists turning by fingertip but is not locked up solid then the SC is probably ok.
At any rate I don't believe a SC failure can cause the engine to go into "limp mode" because there are no sensors monitoring the SC... you'd simply have a loss of horsepower (assuming the SC didn't blow apart internally and cause damage in other parts of the engine where sensors are located... which is very unlikely if the SC impeller wheel isn't spinning freely by fingertip; it's probably ok).
- Michael
The reason I was concerned about the s/c is because if it does spin freely by hand then there is always the possibility that debris from the damaged s/c has caused internal engine problems which are now causing sensors ( i.e. oil pressure sensor) to activate a limp mode situation.
It takes more torque then the bare hand can apply in order to spin a good s/c. It requires a torque wrench and socket in order to spin it.
You are correct that the s/c has no sensors.
I didn't really think that the was a s/c issue either but felt it was important to eliminate that as a possibility.
The 2004 4tecs were known for oil pressure switches giving off incorrect signals causing limp mode. I sure would like to see a code to verify that.:cheers:
It takes more torque then the bare hand can apply in order to spin a good s/c. It requires a torque wrench and socket in order to spin it.
You are correct that the s/c has no sensors.
I didn't really think that the was a s/c issue either but felt it was important to eliminate that as a possibility.
The 2004 4tecs were known for oil pressure switches giving off incorrect signals causing limp mode. I sure would like to see a code to verify that.:cheers:
Michael211_2000
Well-Known Member
That sounds way too tight to me. After I replace the washers in mine and torqued it down to the specified newton/metre's, I could still turn the air impeller with a good deal of force by hand (while holding the shaft with the spanner tool). It wasn't easy to turn but it would turn by hand. As tight as you say it should be, it would defeat the purpose of the friction washers as it would never be able to slip when you release the throttle.... that just sounds way too tight to me unless you're using a blow-off valve.
- Michael
Michael211_2000
Well-Known Member
You're kidding! I may be right? LOL! I was basing my opinion on gut-feel primarily... I half expected everybody on here to condem my opinion on this SC slip issue. LOL!
Anyhows, the only way I was able to make my SC impeller wheel "slip" by hand was to put a thumb and middle finger from 1 hand on opposite sides of the impeller wheel and push/twist... it doesn't slip easily, but I could cause it to slip by hand. I don't recall the torque specification for the nut on the end of the shaft, but I used a torque wrench to set it according to the instructions which came with the SC replacement washer kit. That's all I know about this.
Chippies, any news or further information on your problem? Did you get the fault code reading while the engine was in "limp mode"?
- Michael
Anyhows, the only way I was able to make my SC impeller wheel "slip" by hand was to put a thumb and middle finger from 1 hand on opposite sides of the impeller wheel and push/twist... it doesn't slip easily, but I could cause it to slip by hand. I don't recall the torque specification for the nut on the end of the shaft, but I used a torque wrench to set it according to the instructions which came with the SC replacement washer kit. That's all I know about this.
Chippies, any news or further information on your problem? Did you get the fault code reading while the engine was in "limp mode"?
- Michael
ski-d00
Well-Known Member
A very common problem with the 2003 and 2004 were the oil sending units....
The rear oil pressure switch monitors the actually liquid oil pressure of the engine that we are all familiar with in all 4 stroke engines. If you get an OIL warning on your display and the RPMs drop to 2500. It means either your engine has low oil pressure or your rear oil pressure switch has failed. I've changed lots of rear switches and have yet to see an actual oil pump failure but it should be checked to make sure the pressure is adequate using a gauge because this is a serious situation. (I have seen someone forget to put oil back in after an oil change and this warning went off).
The front oil pressure switch monitors the air pressure in the lower crankcase and entire sealed oil system. This works in conjunction with the TOPS valve that it is located by and prevents too much pressure from building in the oil system area. Remember, the pistons moving downward also create air pressure on the bottom side of the piston. The failure mode of the front oil pressure switch is a check engine light and limited to 5000 RPMs with a P1202 engine code.
The rear oil pressure switch monitors the actually liquid oil pressure of the engine that we are all familiar with in all 4 stroke engines. If you get an OIL warning on your display and the RPMs drop to 2500. It means either your engine has low oil pressure or your rear oil pressure switch has failed. I've changed lots of rear switches and have yet to see an actual oil pump failure but it should be checked to make sure the pressure is adequate using a gauge because this is a serious situation. (I have seen someone forget to put oil back in after an oil change and this warning went off).
The front oil pressure switch monitors the air pressure in the lower crankcase and entire sealed oil system. This works in conjunction with the TOPS valve that it is located by and prevents too much pressure from building in the oil system area. Remember, the pistons moving downward also create air pressure on the bottom side of the piston. The failure mode of the front oil pressure switch is a check engine light and limited to 5000 RPMs with a P1202 engine code.
Michael211_2000
Well-Known Member
Chippies, go Google "+P0326 +SeaDoo +Code" and read some of the results that come up. Looks like something to do with the engine's knock sensor.
- Michael
- Michael
Michael211_2000
Well-Known Member
Hope that's all it is. Here's hoping! 
- Michael
- Michael
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