<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RudeLude &raquo;</TD></TR><TR><TD CLASS="quote">maybe u got a bad oil pump or something? could be the right amount of oil in your motor, but a bad oil pump, maybe not enough pressure or something? just a thought
daniel</TD></TR></TABLE>

Oil pressure gauge is reading perfect.

 

are u letting the car warm up? if its not at operating temp the ecu will not allow it to kick in (just another thought, simplest things cause the biggest probs sometimes)
daniel

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RudeLude &raquo;</TD></TR><TR><TD CLASS="quote">are u letting the car warm up? if its not at operating temp the ecu will not allow it to kick in (just another thought, simplest things cause the biggest probs sometimes)
daniel</TD></TR></TABLE>

Deffinatly not the problem...it won't switch on if you don't let it warm up its more of a when it switches on it screws up. but thanks youa re right the smallest things are ususally the problem.

 

Does it do it all the way through the high speed cam? Or just as soon as it switches over? Are you running oil squirters? Stupid Q, but whats your AF look like at the cross over? Did you clay the pistons/check valve relief with vtec enabled?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blown90hatcH &raquo;</TD></TR><TR><TD CLASS="quote">Does it do it all the way through the high speed cam? Or just as soon as it switches over? Are you running oil squirters? Stupid Q, but whats your AF look like at the cross over? Did you clay the pistons/check valve relief with vtec enabled?</TD></TR></TABLE>

When it switches over to the high map it stays there but just bounces around at where I ahve vtec set at jus tlike a rev limit. The A/F looks fine when it hits crossover but then it goes a little screwy due to the way the car is acting. I am not running oil squirters, and I did clay it on the high cam.

 

is the car running really lean ?? it could be that you are way lean at the vtec crossover. I still suspect an oiling problem

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sewell94 &raquo;</TD></TR><TR><TD CLASS="quote">is the car running really lean ?? it could be that you are way lean at the vtec crossover. I still suspect an oiling problem</TD></TR></TABLE>

No the car is deffinatly not running lean when it hits v-tec.....I ahve played with the map so much I think I did every possibility supper rich, lean high timing low tmiing you name it I did it. Does anyone know the exact oil pressure that the head needs to see to have it hit vtec.....I will run a guage rirectly off the vtec oil pressure sending unit to see then.

 

cam overlap is my guess....need to tune it out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MiraiZ &raquo;</TD></TR><TR><TD CLASS="quote">cam overlap is my guess....need to tune it out</TD></TR></TABLE>


what do you mean by cam overlap I am useing GSR cames and the timing is dead on. vavle lash is set at .007 eshaust, and .006 intake.

 

Little update:

Just went for a ride and had a volt meter on the vtec selenoid. it showed 12 volds when I reached vtec, but the usual breaking up occured.

NOw we decided to run an external wire from the vtec selenoid to a switched 12V source so we can switch it on whenever we want. Now when we switch it we here the selenoid work so we take a drive to see if we can make it happen on the street. Right now my CEL is on with a disconnected vtec selenoid, but this shouldn't matter since we are going to feed the voltage manually. we start to drive and hit the switch......the car does not bog donw or feel like it hit a rev limiter, but we also have trouble telling if the tone of the engine changes. now we also flip the switch at idel to see if the rpm's or engine nois would change and we don't here any diffrences.

Also when i am running the car with the vtec set at 5'000 and the vtec sensor disconected the car goes through the rpms fine.....which brings me to the next question...

Do any other sensors start to operate or control the switch to the high speed map?

 

By manually engaging vtec in this way you are not reading the timing or fuel maps for the high cam. Why don't you post your maps, both high and low cam fuel tables in 2d and 3d vies as well as the table view.

If you are using an adapter harness it may be the problem.

I have seen a vtec controller that was hooked up incorrectly cause a revlimit at the rpm point that vtec was set at (jackson racing vpac).

Also try datalogging when you are having the problem and see what sensors have strage readings.

 

I do know that manually switching it to vtec will not allow jumping to the high speed map and will keep the ignition and fueling at the low speed map, but my point of trying that was to see if it was an oiling issue, but as it looks its not an oiling issue. So this leads me to beleave that it is a short somewhere when it tries to switch to the high speed map. Now I just have to find out what sensors are reacting or having a short when vtec switches over so I may rewire them.

Also I am not running a adapter harness on the car since i am not using a vtec controller.

So does anyone know what sensors actively operate while the car switches to vtec or high speed map?

 

ect, speedo, oil pressure.

i think that is it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dturbocivic &raquo;</TD></TR><TR><TD CLASS="quote"> ect, speedo, oil pressure.

i think that is it.</TD></TR></TABLE>

What is the ect? Thanks.

 

engine coolant temp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dturbocivic &raquo;</TD></TR><TR><TD CLASS="quote">engine coolant temp.</TD></TR></TABLE>
Im an idiot

 

is there anyone within like a two hour drive from wilkes-Barre/Scranton PA area that might want to help me out cus I am compltely lost right now, everyhting seems to be in perfect working order. Just doesn't work!

 

how old are your spark plugs? how old are your spark plug wires? how old is the rotor?

I recently tuned a car that was falling on its face, which was really related to the spark misfiring with the added timing advance that comes with switching to high cam, the system's basic items (cap/rotor/wires/plugs) were a little old and were misfiring.

what do you have your plugs gapped to.

sounds like the system is working if you can see the datalog of vtec engaging, so its either ignition system breaking up due to being warn or just a bad tune.

 

Ignition parts are all brand new that was my first guess, but after all new ignition was put on and it still did it when I went NA and ran a stock ECU that makes me think it doens't ahve anyhting to do with the ignition. I ahve switched distributors and ignition boxes along with deleteing the MSD box so I think the ignition is in tip top shape.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DOHCarp &raquo;</TD></TR><TR><TD CLASS="quote">Ignition parts are all brand new that was my first guess, but after all new ignition was put on and it still did it when I went NA and ran a stock ECU that makes me think it doens't ahve anyhting to do with the ignition. I ahve switched distributors and ignition boxes along with deleteing the MSD box so I think the ignition is in tip top shape.</TD></TR></TABLE>

have you tried a differant ignitor? (ignition control module)

if ya could come down my way, i would definitly give ya a hand. im about 45 minutes from chad's(underpressure02)

 

Check your Cat, it may be clogged.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spunkster &raquo;</TD></TR><TR><TD CLASS="quote">Check your Cat, it may be clogged.</TD></TR></TABLE>

No cat just 3in all the way back.

 

bump for a PM sent and any other looks.

 

if the diamater of the oil feed line isnt big enough you will have problems also. Done that one my self!

 

Alright I hooked a oil pressure gauge right up to the vtec oil pressure sending unit, and it has no pressure! only a little bit of oil comes out through the nylon tube, and then when I hit vtec manually a little more oil jumps out, but not enough to fill the line.

So my question is should I have the same oil pressure at the v-tec oil pressure sending unit as I do at the stock oil pressure sending unit?