Bucking Problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

blackbeltclub99 · 10-12-2004, 05:35 PM

Just got my car finished now it bucks like crazy. It will do it pretty much at random, but mainly anytime you are getting off the gas. If you are on the gas it will not do it so take offs are not bad, but as soon as you let off it will start ALMOST all the time. Sometimes it is fine and does not do it. I had it tested for a boost leak and they said their was not one, but thought it may be a TPS problem. if it is the throttle position sensor how do I fix it?

I have a 98 blacktop in a 89 coupe it is almost all stock except for 3"dp, 3" test pipe, 3"catback, 255 walbro, and an intake.

any help would be great...

97SilviaRB · 10-12-2004, 08:11 PM

have you checked the ecu for any codes?

blackbeltclub99 · 10-12-2004, 09:03 PM

no, I know I should just search but could you post the procedure?

BillKlineVT · 10-13-2004, 09:50 PM

just out of curiosity, are you running the stock BOV? If you aren't and are venting to the atmosphere, it could be a contributing factor to the "bucking." When I was venting to the atmosphere my car would buck when I was still in gear but off the throttle. Now that I am recirculating the bov, it doesn't buck anymore....

This could have nothing to do with your problem but its just an idea.

-Bill

10-12-2004, 05:35 PM	#1
blackbeltclub99 Zilvia Member Join Date: Feb 2003 Location: East TN Age: 45 Posts: 282 Trader Rating: (0) Feedback Score: 0 reviews	Bucking Problem Just got my car finished now it bucks like crazy. It will do it pretty much at random, but mainly anytime you are getting off the gas. If you are on the gas it will not do it so take offs are not bad, but as soon as you let off it will start ALMOST all the time. Sometimes it is fine and does not do it. I had it tested for a boost leak and they said their was not one, but thought it may be a TPS problem. if it is the throttle position sensor how do I fix it? I have a 98 blacktop in a 89 coupe it is almost all stock except for 3"dp, 3" test pipe, 3"catback, 255 walbro, and an intake. any help would be great...

10-12-2004, 08:11 PM	#2
97SilviaRB Leaky Injector Join Date: Nov 2003 Location: North Carolina Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	have you checked the ecu for any codes?

10-12-2004, 09:03 PM	#3
blackbeltclub99 Zilvia Member Join Date: Feb 2003 Location: East TN Age: 45 Posts: 282 Trader Rating: (0) Feedback Score: 0 reviews	no, I know I should just search but could you post the procedure?

10-13-2004, 09:50 PM	#4
BillKlineVT Zilvia Member Join Date: Nov 2002 Location: Vermont / Virginia Tech Age: 40 Posts: 175 Trader Rating: (0) Feedback Score: 0 reviews	just out of curiosity, are you running the stock BOV? If you aren't and are venting to the atmosphere, it could be a contributing factor to the "bucking." When I was venting to the atmosphere my car would buck when I was still in gear but off the throttle. Now that I am recirculating the bov, it doesn't buck anymore.... This could have nothing to do with your problem but its just an idea. -Bill