2002 Viper will not go over 60 mph

B

Big Block Bill

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Joined
Jan 2, 2013
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12
Age
68
Location
Elk Grove Village Illinois
Had my Son's 2002 Viper on a 4 day trip last weekend in the UP and the last day it would not go over 60 MPH. It just Babbles @ 60 MPH. I just went through the carbs before we left. It there possibly a problem with the Power Valves sticking? When we changed the plugs #1 looked darker (Black) compared to #2 & #3 and there appeared to be vapors coming out of the spark plug hole of #1. Any help would be appreciated. It might be time for another Apex.

Thanks,

Big Block Bill
(2) 1979 SRX 440 - Original owner
(2) 2006 Apex GT & ER
2002 Viper
2000 SXR700
 

compression, that is a lot of speed to lose, you may have a missing piston skirt or hole in your piston. Even with three power valves not open, would go faster than 60.
 
I don't think it has a limp mode, and if did would it Limp Mode to 60 MPH? I did disconnect the TPS and tried it, no change. I have a SXR 700 that gave me fits with the TPS and I bypassed it 7 years ago and it has run Great ever since.

Bill
 
Big Block Bill said:
I don't think it has a limp mode, and if did would it Limp Mode to 60 MPH? I did disconnect the TPS and tried it, no change. I have a SXR 700 that gave me fits with the TPS and I bypassed it 7 years ago and it has run Great ever since.

Bill
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Do you mean TORS? SXR's didn't have a TPS.
 
Yes. Being a Master Certified ASE Automotive Technician since 1974 anything related to Throttle position to me is a TPS: Throttle Position Sensor. I did not know Yamaha called it TORS. Thank You for Educating me. I still believe due to the fact it was 45 degrees, my issue is temperature related more than anything else. We pulled it out of the trailer today and hanging on a Rack it pulls like crazy to 8,000 RPM's. Any Input? This Sle NEVER liked Warm Weather.

Bill
 
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Tors is a throttle overide system. A safety feature incorporated into your cdi. It stops the engine from revving high enough to engage the clutches ...3000 or so.

Sent from my E6560C using Tapatalk
 
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