Not sure what's going on. It used to rev higher. What's some common problems that would make the engine not rev beyond 6500?

Also, I've lost the VTEC kick though my vafc tells me that both the ECU and it are engaging VTEC.

Thanks in advance...

 

You must be throwing a check engine light or you are low on oil.

6500rev limit means you are running in safe mode.

 

yup, it's in limp mode. any check engine lights??

fuel cutout should be at 7625 or around there. at least mine is.

 

EGR right now but this code was there when VTEC was kicking in. I just checked oil this morning and it was maybe a half quart low. It's full now and is still doing it. Unless the sensor is bad, it's not the oil level/pressure. I plan on getting an oil pressure gauge but it won't be in the immediate future. The ECU uses a separate sensor for oil pressure, right? If it read low though, wouldn't trip a light for it?

Any other ideas?

 

The egr flapper valve either needs to be replaced, or you can work the flapper by pushing on the spring loaded rotor which works the flapper. I had a cel for that and I just pressed it a few times and now it works fine. New egr is like $300

 

I had the same problem too. My vtec controller said it was on, but wasnt. I think it was the vtec solonoid had a wire loose, so when vtec was supposed to kick in it didnt open the valve to allow more oil flow. check that and ill post a pic tomorrow just to make sure Im describing the right piece....



Modified by djbrandonr at 4:42 PM 11/21/2004

 

I don't doubt for a minute that it's a wiring issue with this car. JDM H22 swap into an OBD0 car is a wiring nightmare!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by maxvtec7500 &raquo;</TD></TR><TR><TD CLASS="quote">The egr flapper valve either needs to be replaced, or you can work the flapper by pushing on the spring loaded rotor which works the flapper. I had a cel for that and I just pressed it a few times and now it works fine. New egr is like $300</TD></TR></TABLE>

I'm pretty sure that there is something wrong with the wire that's suppose to read 1V (according to the manual I've downloaded). It only gives about .1V though. I've check continuity to the ecu from the EGR itself. It doesn't give the recommended voltage right at the ecu

 

OK, EGR doesn't come on right away. If I don't just cruise around, it doesn't come on at all (like just accelerate...no maintaining of speed). I still get the 6500 rev limit w/o any engine codes.

I guess I need to know what would cause the rev limit but not throw a code...

 

i had a problem like that umm check ur injectors or the sensors. is this a jdm swap u did.

 

When I had that problem, it was because the VTEC wiring was not connected well down at the ECU plug. Check all the wiring for the VTEC solenoid and oil pressure switch first.

 

 

OK, VTEC is working but I'm still stuck with a 6500 RPM limit. EGR is only code though.

The VTEC thing was a setting issue with my VAFC. A friend started messing around with it and upped the fuel on the low&lt;&lt;high setting (can't remember the exact label of it but it's a setting that lets you increase or decrease fuel when the VAFC VTEC engagement setting differs from the computer). Apparently even though I tried to get the VAFC to match the computer's VTEC engagement, it still needed more fuel.

maybe my fuel line needs some help? Maybe change the fuel filter? I have a walbro 255lph pump so I know it's getting pressure plus I can see it's at around 40psi at idle and hits like 60+ when I rev it (fuel gauge at filter).

 

check your injectors see if there all working

 

Are you hitting a rev limit or is the engine just loosing power and won't go over 6.5k?

If it's a rev limit, might check the coolant temp sensor. The ECU will have a lower rev limit if it thinks the engine is cold. You shouldn't have VTEC either but maybe you are forcing that with the VAFC? I don't know how those hack into the wiring. Still seems like you should have a code (besides EGR which shouldn't limit you to 6500). Are you sure it's a P13 ecu and not a P14? Does it have a modified rom? Might try borrowing a known good ecu and see what you get. Or get a chiped P28 and throw the EGR crap in the trash. Good luck...

 

does the vti (ecu vtec) come one on the vafc screen when you hit 4900? if not, i bet you hooked up the vafc vtm wire wrong....its the blue wire that goes in place of the vtec oil pressure switch....it tells the ecu that theres enough oil pressure and lets vtec come on...you dont even need the vtec oil solenoid if you have this wire in, it tells the ecu that theres always enough oil pressure....

so, if the vtec controller says the vti (ecu vtec) is on, then this isnt the problem....

 

VTI and VTO both come on. My VTEC is working now so that's fixed. All wiring was cool, as mentioned I believe it was a setting issue on the VAFC.

My problem is a rev limit. It totally cuts the fuel.

Anyone in the local Atlanta area mind letting me borrow a P13 (yes, I know I have the P13 and as far as I know, it's unmodified)? Or does someone have a P28 for cheap?

Also, this setup is a JDM swap...

How would you check injectors directly to see if they are working?

 

By any chance is your speedometer not working? If not check your VSS in your tranmission.

If that's not the problem then it has to be related to your wiring, Double check your connections you made when you installed the VAFC, a connection might be loose or a pin could of popped out of its place.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Daily Interlude &raquo;</TD></TR><TR><TD CLASS="quote">
How would you check injectors directly to see if they are working?</TD></TR></TABLE>

Check the impedance.

 

i am leaning towards the vac personally, i have seen it mroe than once where a vafc is isntalled and a similar issu occurs wehre the ecu si saying rev limit at 6500 and dont do vtec, but then vafc is engaging vtec anyway, usually it turned out to be a loose wire.

 

Mine did that once also. my VTEC solenoid was bad, and my spool was cloged. (acording to the honda dealership ) i had that changed along with my oil, had the cel cleared and it works perfect. that happend about 6 months ago. never had a problem sence.

 

ok ok... Sorry I havent been around Jason... Guys, hes pretty car savy and knows a good bit about his lude... When he bought it, wiring nightmare and everything else. Alot of the possible problems mentioned here are a definite negative for the answer. Im not sure whats up, but I will help ya look into it Jason... Ive also got my p13 I can yank out if need be... Just let me know...