SR having WOT issues!!!?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

TurbLu · 11-07-2006, 08:41 AM

I am having a mild issue right now. It only happens at WOT(Not even under boost)... in any gear at any RPM if I go WOT the car just falls flat on its face. Almost like a fuel cut or spark cut. But I can give it up to like 99% throttle as long as I dont hit the floor with it and it drives and accelerates normally. I have no codes being thrown? Im almost positive its electrical at this point. I was running lean due to a fauly megan FPR so I went back to stock and havent seen white plugs since. So what else could it be?

punxva · 11-07-2006, 09:29 AM

have you checked your maf?

SoSideways · 11-07-2006, 01:46 PM

TPS sensor? WOT switch? Which SR do you have?

TurbLu · 11-07-2006, 09:51 PM

Red Top SR... please help me narrow down which items to check out...

Also how do I test the TPS and WOT switches???

TurbLu · 11-07-2006, 11:40 PM

One more thing... during a FPR change over it leaked gas all over the tps area. Do you guys think it could've ruined it in any way. Pretty doubtful because the car ran fine for a few days after. Then after a hard run is when it started doing this. I checked my plugs and # 1 was white and it got darker as I got farther down the engine. So I swapped back a NEW factory FPR. The car doesnt run lean anymore but the car still wont let me WOT her!!!

GSXRJJordan · 11-08-2006, 12:20 AM

I'm 90% that its TPS. Ideally you'd want to see what voltage the tps is getting, and find out whether it puts out that same voltage at WOT... first try pulling out the TPS plug and spraying some contact cleaner in both the plug and its receptacle, and letting it evaporate. Then plug it back in a few minutes later, let the car warm up, and try it. Definitely sounds like a full TPS check would show it volting up correctly right up until WOT, then showing drastically lower volts at WOT, but could just be the plug.

Also could have to do with MAFS, but I doubt it if its strictly throttle dependent.

TurbLu · 11-08-2006, 08:46 AM

Thanks, Im going to research in the fsm just how to exactly test the TPS sensor. Now if it is bad, where can I get a replacement?

11-07-2006, 08:41 AM	#1
TurbLu Zilvia Member Join Date: Sep 2006 Location: Las Vegas Posts: 197 Trader Rating: (0) Feedback Score: 0 reviews	SR having WOT issues!!!?? I am having a mild issue right now. It only happens at WOT(Not even under boost)... in any gear at any RPM if I go WOT the car just falls flat on its face. Almost like a fuel cut or spark cut. But I can give it up to like 99% throttle as long as I dont hit the floor with it and it drives and accelerates normally. I have no codes being thrown? Im almost positive its electrical at this point. I was running lean due to a fauly megan FPR so I went back to stock and havent seen white plugs since. So what else could it be?

11-07-2006, 01:46 PM	#3
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	TPS sensor? WOT switch? Which SR do you have? __________________ SoSideway's iTrader Rating!! *SoSideways' Review Thread!!* http://sosideways.wordpress.com/

11-08-2006, 12:20 AM	#6
GSXRJJordan Post Whore! Join Date: May 2006 Location: San Diego, CA Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	I'm 90% that its TPS. Ideally you'd want to see what voltage the tps is getting, and find out whether it puts out that same voltage at WOT... first try pulling out the TPS plug and spraying some contact cleaner in both the plug and its receptacle, and letting it evaporate. Then plug it back in a few minutes later, let the car warm up, and try it. Definitely sounds like a full TPS check would show it volting up correctly right up until WOT, then showing drastically lower volts at WOT, but could just be the plug. Also could have to do with MAFS, but I doubt it if its strictly throttle dependent. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com

11-07-2006, 09:51 PM	#4
TurbLu Zilvia Member Join Date: Sep 2006 Location: Las Vegas Posts: 197 Trader Rating: (0) Feedback Score: 0 reviews	Red Top SR... please help me narrow down which items to check out... Also how do I test the TPS and WOT switches???

11-07-2006, 11:40 PM	#5
TurbLu Zilvia Member Join Date: Sep 2006 Location: Las Vegas Posts: 197 Trader Rating: (0) Feedback Score: 0 reviews	One more thing... during a FPR change over it leaked gas all over the tps area. Do you guys think it could've ruined it in any way. Pretty doubtful because the car ran fine for a few days after. Then after a hard run is when it started doing this. I checked my plugs and # 1 was white and it got darker as I got farther down the engine. So I swapped back a NEW factory FPR. The car doesnt run lean anymore but the car still wont let me WOT her!!!

11-08-2006, 08:46 AM	#7
TurbLu Zilvia Member Join Date: Sep 2006 Location: Las Vegas Posts: 197 Trader Rating: (0) Feedback Score: 0 reviews	Thanks, Im going to research in the fsm just how to exactly test the TPS sensor. Now if it is bad, where can I get a replacement?