Z32 TT buck at WOT - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

tt2x2tt · 06-01-2011, 03:00 PM

ok i cant figure this out i have a JDM swaped auto(turbo trans) TT z32 @ 13lbs and when im at WOT easing into or just flooring the pedal the car bucks and rpms drop, it does when boost is at 13lbs but not right away just when the rpms are high, other than that it drives fine, no weird noises, no codes, no leaks boost holds, same power it just cuts itself off, before i had this problem my ECU was governed to 120 i could never go past that, but this is completely different, so any thoughts please!

turboHLS30 · 06-01-2011, 08:37 PM

Maybe it's hitting a fuel cut.

Sileighty_85 · 06-01-2011, 09:53 PM

probably blowing out spark, check plug gaps

tt2x2tt · 06-02-2011, 09:08 PM

i know how bad plugs feel and i have a feeling its not that, my car doesnt backfire or anything plus the buck was major not slight, But in all circumstances i took it for a drive again and now its normal again lol, i think its a bad sensor for some reason so im gonna check the tps/maf, plus when it was acting strange the tranny would shift up down up down only sometimes driving normal at about 20-30 mph, felt like the car was being jerked back n forth making its mind up to go into 2nd or stay in 1st

JeeBus · 06-08-2011, 05:15 PM

Check your MAF, TPS sensor, and CAS timing, IF the CAS isn't between 15-17 degrees, it'll buck.

Also, the TT's are notorious to run like crap unless the specified plugs are used, and gapped accordingly.

06-01-2011, 03:00 PM	#1
tt2x2tt Join Date: Jun 2011 Location: fl Age: 31 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Z32 TT buck at WOT ok i cant figure this out i have a JDM swaped auto(turbo trans) TT z32 @ 13lbs and when im at WOT easing into or just flooring the pedal the car bucks and rpms drop, it does when boost is at 13lbs but not right away just when the rpms are high, other than that it drives fine, no weird noises, no codes, no leaks boost holds, same power it just cuts itself off, before i had this problem my ECU was governed to 120 i could never go past that, but this is completely different, so any thoughts please!

06-01-2011, 09:53 PM	#3
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	probably blowing out spark, check plug gaps __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

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06-01-2011, 08:37 PM	#2
turboHLS30 Leaky Injector Join Date: Jun 2010 Location: Daytona Beach, Fl Age: 27 Posts: 80 Trader Rating: (0) Feedback Score: 0 reviews	Maybe it's hitting a fuel cut.

06-02-2011, 09:08 PM	#4
tt2x2tt Join Date: Jun 2011 Location: fl Age: 31 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	i know how bad plugs feel and i have a feeling its not that, my car doesnt backfire or anything plus the buck was major not slight, But in all circumstances i took it for a drive again and now its normal again lol, i think its a bad sensor for some reason so im gonna check the tps/maf, plus when it was acting strange the tranny would shift up down up down only sometimes driving normal at about 20-30 mph, felt like the car was being jerked back n forth making its mind up to go into 2nd or stay in 1st

06-08-2011, 05:15 PM	#5
JeeBus Leaky Injector Join Date: May 2011 Location: ATL Posts: 66 Trader Rating: (4) Feedback Score: 4 reviews	Check your MAF, TPS sensor, and CAS timing, IF the CAS isn't between 15-17 degrees, it'll buck. Also, the TT's are notorious to run like crap unless the specified plugs are used, and gapped accordingly.