[[email protected]]

ive got another problem with my k20... i never had this problem before but just until 1 week ago... now when i hit the gas when i shift into any gear after 1st... it pops in and out of vtec...

oil pressure is good...
oil level is up there...
all the sensors are connected...
i just replaced the spark plugs today with bosch platnium +4

tomorrow im pulling out the vtec solinoid... to clean it... and changing the oil.... motor only has 5500miles....

 

[k20spooner]

Does it hesitate or climb smoothly but without vtak?

 

[[email protected]]

Does it hesitate or climb smoothly but without vtak?

it revs out great... its just when it hits 6k it vtec engages/disengage/engage... and holds throughout the power band... than i shift and it does it again... im going to make a video so u can see what i am talkin about...

 

[kommon_sense]

Do you have a kpro datalog? What are your vtec crossover points set to in kpro?

 

[Notorious92rhdEG]

post a datalog

 

[talonxracer]

First off get rid of those crappy ass platinum4's

check the spool valve(vtec solenoid) connectors for any dirt/corrosion when you remove it to check the filter.

 

[[email protected]]

lol i just bought them yesterday... i just cleaned the vtec solinoid and it seems that it fixed the problem but i haven't been able to really get on it because of the rain... im changing the oil and filter...

 

[onepoint6i]

Bosch? why bosch?

any dtcs?

 

[[email protected]]

i dont have kpro which is my only downfall... but im trying to save for it im running a prc ecu...

today i went out its clear out ... and i got on it and it was great 1-4th gear... i was driving around for like a hr... and i downshifted into 3rd gear and slowly reved it out and at 6k it pops vtec but its like holding back till bout 6500-7000k then it pulls hard... never had this issue before ... this is very new to me...

 

[[email protected]]

new plugs, cleaned vtec solinoid, new oil and filter... no valve taps or knocks...

every sensor is hooked up ... brand new knock sensor...

 

[[email protected]]

the car is still doing the same thing with the vtec... could it be a coil pack... it takes about a 45 mins of driving then the problem starts...

 

[kb58]

Hmmm, yeah, how do you know it's a VTEC thing and not a cylinder dropping out?

 

[[email protected]]

dropping out wat??? it doesn't happen all the time... it sometimes would run perfect.... but lets say 4 of 7 days... this vtec problem happens... but from 1-6k rpm its pulls how its always did... im buying a video camera tomorrow... to post up a video...

 

[bubblebrain]

it has to be a wiring issue.

 

[HybridRacingTunr]

Definitely change the plugs out for some NGK's just to make sure. Ive seen these plugs make an engine pur like a kitten while others, that were $20-$40 more, would make the car run like shit. Im not saying this is the problem but just eliminate it to be sure. Next I would check all your grounds and make sure they are nice and tight and you have at least 3, one on the timing chain cover and two on the trans. Try those two things and let me know what happens.

Parker

 

[[email protected]]

it has to be a wiring issue.

i considered that too... today ive been noticing it doesn't happen in first gear... its every gear after 1st... but it happened in 2nd gear today but stopped in 3rd and 4th...

im going to post a video up tonight...

 

[[email protected]]

PUT THE VOLUME UP!!!!!! THANKS FOR ALL UR HELP...

FIRST VIDEO OF IT RUNNING PERFECTLY FINE... I JUST MADE THE VIDEOS TONIGHT...
http://s383.photobucket.com/albums/oo275/hoodmekanik/?action=view&current=itsgood.flv

NOW LISTEN CLOSELY AT ABOUT 4SECS ENDING OF THE VIDEO
http://s383.photobucket.com/albums/oo275/hoodmekanik/?action=view&current=goodbad.flv

ANOTHER VIDEO LISTEN AT ABOUT 5SECS ENDING OF THE VIDEO
http://s383.photobucket.com/albums/oo275/hoodmekanik/?action=view&current=bad.flv

 

[talonxracer]

I bet there is an issue with the PRC ECU and the oil pressure switch. USDM switch is linear and the PRC is programmed to utilize a simple on and off switch. A PRC ECU is the worst one to use in a swap with a USDM engine, even Kpro'd

 

[you449]

try a different ecu or if some can let u borrow a kpro bro

 

[[email protected]]

im sellin a 94 delsol... so i can buy it i even posted to trade it for kpro and a couple other things...