i know this may sound funny but check the ground wire that bolts to the thermostat housing...i have had many problems caused by that thing being just a little loose

 

Just remebered that I have a damaged #4 injector. The plastic tip of the injector that sprays into the manifold is broken off so its not spraying correctly.

Could this cause the the car to studder during vtec?

Also im missing my knock sensor. Is the KS directly related to the vtec engagement?

help me out.

 

thats a lot of codes to be throwing

1 o2
2 o2
9 cyp
21 vtec silenoid
22 vtec oil pressure switch

has it always thrown those codes?

having a broken injector tip is not good either the spray pattern for that cylinder wil not be very good and the fuel may not atomize correctly resulting in poor combustion.

if you bring it up to Secret Services ill take a look at it for you

 

When should i bring it up there. would saturday afternoon be good?

and if anyone has a spare knock sensor for sale i need one ASAP!

 

what ecu are you running that you need to run a knock sensor?

i dunno if well be there saturday afternoon

call first

 

obd-0 Pr3 ecu.
just got a new set of injectors, will replace them tomorow and see if it fixes the studdering during vtec

 

pr3 doesnt use a knock sensor i thought

 

Sounds like a lack of fuel Problem!

 

replaced the broken injector , still same problem.

 

+1