So im trying to find out why my vtec doesnt work anymore.

JDM B16A SIR-I OBD0
first gen.

into my 90 Integra obd0

Well how do these screens look?
And is that a bad ground? Where should I ground it.

Vtec use to work, but when It did it was choppy.
now it doesnt at all






where I ground it



Bad ground?









Modified by Jose-aka-Pedro at 1:25 AM 6/4/2007

 

So no one huh.
Tech.misc I thought would be best.

Screens dont look bad or good?
the ground isnt bad???

 

 

do you have a cel? clean the solenoid and screens out and let them dry.

 

I have a code 9 which is TPS

Problem is when they sent over the B16 swap it came with no tps.
I used the one on my ls motor.
I have always had code 9. But vtec worked back then.

I put it all backtogether and tried driving around. let warm up and drove.

Nothing. I came back home and grounded it somewhere else.

went back out and nothing.

So I came back and grounded it directly to the battery,

went back out and srill nothing.

I checked my oil. its topped. 10W-30 synthetic

Im pretty sure my oil pressure is good. err the motor would be toast.

the wiring it all good. Went and got the parts from Acura dealer. (pins etc)


Oh well. It pissed me off but its the reason Im trading the b16 long block
for a B18 long block.

B18 with B16 tranny will be nice.

 

well throttle position is needed for vtec to engage,

 

Well,
The problem is at full it only shows half throttle.

But it worked before.... I could understand that,
If throttle was closed then there would be no reason for vtec
to engage,

However It works for awhile then cuts out. (TPS)
and after that it just doesnt show full throttle.

Oh well. Im not going to worry about it. Oh well.
I guess it doesnt matter. I only have it for another week,

 

Start the engine and try to engage VTEC at idle, feed 12V to the VTEC solenoid. You should see a rough idle or stall. If it happens then the solenoid is good you have issues else where.

 

What about knock or VSS sensors?

 

i would say get the tps problem fixed first.

 

i would fix the tps code first. vtec engages only after a certain percentage of throttle is applied to save gas. if your tps is reading wrong you may never be passing the percentage needed to activate vtec.

 

i thought code 9 was tdc/cyl sensor? it is for obd0 anyway..

 

then maybe its code 7. my bad.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by building boost &raquo;</TD></TR><TR><TD CLASS="quote">i would fix the tps code first. vtec engages only after a certain percentage of throttle is applied to save gas. if your tps is reading wrong you may never be passing the percentage needed to activate vtec.</TD></TR></TABLE>

I would have to agree, if it's throwing a TPS code, then the whole car goes into limp mode. It's a hrad code so everything on your car is running like CRAP, get that fixed, and if the problem progresses, then check your ECU or vehicle speed sensor.

 

Get your tps fixed, thats more than likely the reason it is not engaging..