Car wont let more than a little under half throttle
08-23-16, 06:24 PM
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Car wont let more than a little under half throttle
My car hesitates anything over 4k rpm and i cant give it more than half throttle or it just shakes and wont accelerate. i have a new walbro oem fuel pump,fuel filter,ngk plugs and wires,fresh oil and new maf sensor on the car so ik its none of those.i adjusted the tps to the 1k ohms starting point and when i get to about a quarter throttle my tps reading stops at 4.5k ohms and doesnt ever move for the rest of the throttle. is my tps bad? also the previous owner cut off the cat in the middle and my backpressure pickup tube to operate the 6 port actuators is unhooked. The car is a 1988 Na.
Last edited by rx7fan5645; 08-24-16 at 12:25 AM.
08-24-16, 12:27 AM
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08-24-16, 01:17 PM
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08-24-16, 02:06 PM
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The TPS is basically moves to FULL after the plunger moves from idle...
It has little variation,,it is like an On off switch on an S4 car.
So 1/4 throttle to Full throttle can have the same reading and therefore it would be safe to say that it is not the problem.
What I do notice is no 5/6 port activation( no tube hooked up) and that can be a problem.
08-24-16, 10:19 PM
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Maybe you didn't comprehend the post Satch posted.
The TPS is basically moves to FULL after the plunger moves from idle...
It has little variation,,it is like an On off switch on an S4 car.
So 1/4 throttle to Full throttle can have the same reading and therefore it would be safe to say that it is not the problem.
What I do notice is no 5/6 port activation( no tube hooked up) and that can be a problem.
The TPS is basically moves to FULL after the plunger moves from idle...
It has little variation,,it is like an On off switch on an S4 car.
So 1/4 throttle to Full throttle can have the same reading and therefore it would be safe to say that it is not the problem.
What I do notice is no 5/6 port activation( no tube hooked up) and that can be a problem.
back in+ hooked up all the connections. im saving up atm to buy a rb system including Road Race Presilencer - Stainless Steel for 86-92 RX-7 - Racing Beat
Road Race Header for 86-88 RX-7 - Racing Beat
The rod for the 6 ports that the actuator on the front of the motor is snapped off but i have the back on wired open. i have tracked down another rod and plan on buying it with new tb and intake gaskets+ the port replacements from atkins after i buy the rb headers and presilencer
08-24-16, 11:02 PM
#10
I Hear You... You're in a difficult place. Be Patient & Study Well... There is Much Wisdom within these Walls. I found much in the archives that was helpful & you seem to be moving down the right path - do not dismay & stick with it if you feel the call of the Rotary.
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