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sudden weird vtec problem

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Old Aug 11, 2010 | 05:47 PM
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Default sudden weird vtec problem

the other day I put a b16 back in my teggy, well after the car warmed up I took it for a spin felt normal but when I went to pop vtec it studdered like I was bouncing off 2 step while driving. my vtec in my hondata is set at 6k. my car will not rev past 6k.

solonoid works I jumped it to the battery and it clicks. I took it apart everything was clean, screen is clean. no cels ever. my cel light does work and come on when a cel is thrown. has plenty of oil and pressure.

what am I missing here
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Old Aug 12, 2010 | 12:13 PM
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Default Re: sudden weird vtec problem

anyone have any suggestions? speedo works just cant rev past my vtec point
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Old Aug 13, 2010 | 01:10 PM
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Default Re: sudden weird vtec problem

help plz i cant figure this out
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Old Aug 13, 2010 | 06:59 PM
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Default Re: sudden weird vtec problem

anyone? im gonna try using a p30 ecu tonight maybe my s300 is messing up or something. any input would be appreciated thou
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Old Aug 13, 2010 | 07:15 PM
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Default Re: sudden weird vtec problem

low on oil?
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Old Aug 13, 2010 | 07:41 PM
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Default Re: sudden weird vtec problem

5.5 qts got a moroso pan
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Old Aug 14, 2010 | 03:10 AM
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Default Re: sudden weird vtec problem

try the p30
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Old Aug 14, 2010 | 10:36 AM
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Default Re: sudden weird vtec problem

Have you checked all grounds? I believe the ecu grounds the Vtec solenoid when the pressure switch closes. Make sure your oil pressure light works.
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Old Aug 15, 2010 | 12:35 PM
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Default Re: sudden weird vtec problem

Originally Posted by Accordin2me
Have you checked all grounds? I believe the ecu grounds the Vtec solenoid when the pressure switch closes. Make sure your oil pressure light works.
I tried another p30 ecu same problem except it happens at 5500 with this ecu.

all my grounds are good I even tried grounding the vtec wire straight to the frame. oil pressure light does work.

im going to check continuity (sp) from the shock tower to the ecu then shock tower to the plugs.

maybe I have a broken wire not letting the solonoid pop. but even wire tht it should still rev over the vtec crossover right. like if your vtec does kick it should still rev to 7k right?
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Old Aug 15, 2010 | 01:22 PM
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Default Re: sudden weird vtec problem

If she can breathe well enough i would imagine. Hows fuel pressure?
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Old Aug 15, 2010 | 06:33 PM
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Default Re: sudden weird vtec problem

Originally Posted by bakomack
the other day I put a b16 back in my teggy, well after the car warmed up I took it for a spin felt normal but when I went to pop vtec it studdered like I was bouncing off 2 step while driving. my vtec in my hondata is set at 6k. my car will not rev past 6k.

solonoid works I jumped it to the battery and it clicks. I took it apart everything was clean, screen is clean. no cels ever. my cel light does work and come on when a cel is thrown. has plenty of oil and pressure.

what am I missing here
try posting in Honda Civic/Del Sol (1992 - 2000)
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Old Aug 16, 2010 | 09:50 AM
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Default Re: sudden weird vtec problem

fuel pressure is at 55 psi blox c cams

right now im on stock header, gutted cat. 2.5" piping to a stock axle back. do you think my exhaust is too restrictive? I am running pct pistons and stage 3 cams
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Old Aug 16, 2010 | 10:15 AM
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Default Re: sudden weird vtec problem

make sure the oil pan is not dented and is too close to the pick up.. I have had that prob bite me in the *** a few times. it starves it for oil when vtec tries to engage.
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Old Aug 16, 2010 | 03:23 PM
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Default Re: sudden weird vtec problem

Originally Posted by RHD_BB4T
make sure the oil pan is not dented and is too close to the pick up.. I have had that prob bite me in the *** a few times. it starves it for oil when vtec tries to engage.
I have a moroso pan and its not dented at all
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Old Aug 16, 2010 | 03:39 PM
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Default Re: sudden weird vtec problem

Interesting...check the timing, if not im out of ideas.
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Old Aug 16, 2010 | 03:41 PM
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Default Re: sudden weird vtec problem

Originally Posted by Accordin2me
Interesting...check the timing, if not im out of ideas.

timing is dead on just put a new head gasket in. im stumped its like im hitting 2 step while in gear driving. wont rev past 6k. when it gets to the vtec cross over the entire car stops accelerating and stutters like 2 step
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Old Aug 16, 2010 | 05:42 PM
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Default Re: sudden weird vtec problem

anyone else have any ideas for me to check?
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Old Aug 16, 2010 | 11:42 PM
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Default Re: sudden weird vtec problem

knock sensor? or bad pressure sensor
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Old Aug 17, 2010 | 12:22 PM
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Default Re: sudden weird vtec problem

I disabled knock had good pressure.

thanks for the ideas guys I fixed it.

vss was on the fritz. it was working then today decided not to work. started driving down the road it wasnt reading, out of no where it started working. so I replaced it and vtec works not

cause of problem = bad vss
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