my vtec's not working?

[deevergote]

Ah, that could very well be your problem. If you don't know what was done to that ECU, then it could be damn near anything!

My advice would be to find a stock P13 ECU, and see if the engine runs properly with that. Then have your P28 (if that's what it is.... it'll say what it is in the serial number... P28 should be a part of that number) properly tuned. If the ECU is modified, and you don't know what was done, then there could be any number of things bypassed or deactivated.

[h22dude]

hell yea, rite on. i see what your saying that makes good sense. i will do that 4sure. how much you think i could find a stock p13 for?

[deevergote]

It depends... I've seen them sell for $150, and I've seen them sell for $15. www.car-part.com, ebay, craigslist, and the classified sections of various forums are your best sources. Or, if you get lucky, a local junkyard.

The good thing is, the P13 isn't all that desirable. They generally run rich, and they're not capable of being fully tuned (well, some high-end companies like JUN have done it... but most tuners use a P28 or P72). Because of that, you might find one fairly cheap if you look hard enough.

[904drACCORDMANG]

You could put the egr back on and "bang vtec" until you get your a p13 or get egr dissabled on ur p28

EDIT: If your p28 has a good tune then gettin egr dissabled would be the way to go, if it is youl lose hp going back to factory ecu

EDIT EDIT: do u know anything about the internals and injector size? is your motor factory that chipped p28 might be in there for a reason.

[h22dude]

shweet i caint wait, so it wont hurt for me to leave the egr blocked for now will it? i mean until i get the p13 and try everything normal with that on. i think she needs a little rest from being beaten on anyways.

[4GAccordH22]

P28s do not support EGR. Nor do they support a knock sensor (without an additional board). A P13 will give you a code for EGR, but it is a soft code that will not affect the operation of VTEC.

[deevergote]

shweet i caint wait, so it wont hurt for me to leave the egr blocked for now will it? i mean until i get the p13 and try everything normal with that on. i think she needs a little rest from being beaten on anyways.

If it's not running properly, don't beat on it, and drive it sparingly. You don't want to fix this problem only to learn you've broken something else!

P28s do not support EGR. Nor do they support a knock sensor (without an additional board). A P13 will give you a code for EGR, but it is a soft code that will not affect the operation of VTEC.

EGR is mandatory in the US, therefore a P28 supports it. It will only be disabled if the tuner intentionally did so. Many do.

If the ECU were throwing a code, then it could be running in "limp mode", thus keeping VTEC from working... but it's not, so that's a moot point. Chances are, the EGR delete and nonfunctioning VTEC are unrelated.

[4GAccordH22]

My wife's '94 Del Sol with a bone stock D16Z6 (SOHC VTEC) running a P28 from the factory does not have an EGR valve, nor does the ECU support one. I believe that Civics and Integras do not have EGR.

[deevergote]

Interesting... my research must be incorrect, then. I read that all cars 1990+ required EGR. Since you're in CA, I suppose they'd be the first to adopt emissions controls like that!

[stretch JDM]

are you running a vtec controller ? i had the same problem with my b16 . the ground wire was falling out under heavy acc. also have you checked the solenoid on the head?

[deevergote]

Solenoid. Silinoid isn't a word.

If the vtec solenoid was bad, it SHOULD throw a CEL. However, with this modified ECU, we really don't know what the deal is. It's much easier to remove the unknown variable and replace it with a constant (a known working stock P13) and troubleshoot from there.

[stretch JDM]

you are correct sir.yea my spelling is not the cats meow.but you know what i mean bro.deev you are full of good knowledge.

[deevergote]

I know... it just irks me. EVERYONE says silinoid! I just try to correct spelling when it matters... If you say his "silinoid" is bad, and he tries to search for an answer, he might not find one... because the correct answers most likely have the name of the part spelled correctly!

[h22dude]

VTAC is back! it was definitely the egr, i unblocked it and hooked all my vaccum back up reset the ecu. about four days later when i guess the ecu relearned all that stuff it relearns, and im back in action boys.. i still dont get why my cel never came on with the egr blocked and the electrical connection unhooked. in my mind that would mean the ecu would be tuned with the egr delete, but then when i blocked it off vtec wouldnt engage its all very confusing to me. im just gonna save up for sure and go get it retuned, WITH EGR DELETED!!

[drzcb7]

which EGR you using? h22 or f22??