Since I have searched for a diagram from a B16 motor and cannot find it. I am curious....This might be a seriously noob question but....On the vtec pressure switch I have two wires, black & red. Im guessing red is for the ecu and black is ground correct? I am having an issue with a recently swapped 88 si with a jdm b16a car runs great but will not go into vtec. It feels like the motor is being choked up, (not to be confused with misfiring) around 5-6k but will rev fine in neutral but in gear it chokes. Please help

 

Liar you didnt search!

http://www.ff-squad.com/tech/wiring/wiring.92-95.jpg

 

I know about the ECU pinout what I am asking is there are two wires, which is which?

 

for the two wires one is a ground the black one and the other goes to the ecu pin b5 for obd0 ecu what ecu are u running?

 

this is obd1 but shows u where the ground goes

 

i just ground mine to the top of the vtec spool valve

 

try the distributor sounds stupid but i have a 91 civic std and it ran fine till vtec engaged around 5k it would stutter put a new dizzy ran fine

 

have you checked your vtec fluid ;] lol
make sure you dont have your vtec pressure switch wire and your solenoid wire backwards, did that on my friends eg didnt have vtec for days switched em vtec cracked like a rocket =]

 

yeah thats why im gonna try, I havent messed with it since the swap was finished its too damn cold outside!

 

ok anyone else have any real technical answers? It seems as if the when going past 5k the motor starts to loose power, no bucking, misfiring just simply as if you are about to hit redline or floating if you will. Possibly fuel or ignition issue?????

 

just change your spak plugs man, i had the same problem with my jdm b16a. i thought it was also a bigger issue, but i just bought 12 dollar ngk spark plugs from auto zone and it hasnt done it since. i have a vtec problem on my car now, my vtec wont hit!! why not!! but yea to stop the stuttering, get new plugs, its not too expensive so whatve you got to lose?