sr20det running wierd. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drft911 · 11-09-2007, 04:49 PM

my sr doesn't accelerate fast after 3.5 to 5.5 it gets there faster if i have my foot on the gas half ways. and when im on the freeway and floor it, doesn't really feel so powerfull. what could it be? it idles at 1200-1100 rpm,compression 155psi,fuel pressure 37-48,turbo spools freely and gets full boost at 3ish,timing 15deg, could it be CAS?

s13rookie · 11-09-2007, 10:26 PM

it could be a miss-adjusted TPS. if thats what it is, when you floor it the throttle opens too far and bogs/slows down acceleration. It could also be the throttle cable itself where it attaches to the TB.

Might explain why the car is idling high also

drft911 · 11-10-2007, 12:19 AM

no its not throttle cable because i started the car with it disconnected and still idled high,tps i set it at .45V.

S13Leprechaun · 11-10-2007, 01:33 AM

maybe when you put it wide open its starving for fuel... fuel filter, clean injectors? i doubt its ur guel pump i dont think... im pretty sure youd know if its the pump. how the condition of ur TB?

11-09-2007, 04:49 PM	#1
drft911 Join Date: Mar 2005 Location: Oxnard,Cali Age: 38 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	sr20det running wierd. my sr doesn't accelerate fast after 3.5 to 5.5 it gets there faster if i have my foot on the gas half ways. and when im on the freeway and floor it, doesn't really feel so powerfull. what could it be? it idles at 1200-1100 rpm,compression 155psi,fuel pressure 37-48,turbo spools freely and gets full boost at 3ish,timing 15deg, could it be CAS?

11-09-2007, 10:26 PM	#2
s13rookie Zilvia FREAK! Join Date: Mar 2002 Location: connecticut Age: 44 Posts: 1,129 Trader Rating: (0) Feedback Score: 0 reviews	it could be a miss-adjusted TPS. if thats what it is, when you floor it the throttle opens too far and bogs/slows down acceleration. It could also be the throttle cable itself where it attaches to the TB. Might explain why the car is idling high also __________________ Ive spent most of my money on cars and women...the rest i wasted

11-10-2007, 01:33 AM	#4
S13Leprechaun Zilvia FREAK! Join Date: Jan 2007 Location: 1904 Posts: 1,110 Trader Rating: (0) Feedback Score: 0 reviews	maybe when you put it wide open its starving for fuel... fuel filter, clean injectors? i doubt its ur guel pump i dont think... im pretty sure youd know if its the pump. how the condition of ur TB? __________________ *thurs. knights.*

11-10-2007, 12:19 AM	#3
drft911 Join Date: Mar 2005 Location: Oxnard,Cali Age: 38 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	no its not throttle cable because i started the car with it disconnected and still idled high,tps i set it at .45V.