dsm bov install, car wont run now

so i just installed my 1g dsm bov. the install was quick, rather smooth and almost exactly as the install guide on stealth316 suggested (with the exception that the adapter flange i got was a little bigger and i had to get a bigger pipe to accomodate). i thought i was gold, reset the ecu and started the car up... and it died. started again, rough idle and eventually died (but stopped throwing a CEL somewhere along the second try). well i had to go to work so i grabbed my mom's car and left.

i just got back reset the ecu again (unplugged for 15 minutes), started it up and it died. started it up again and it idled at 1100 fine for about 5 or 6 minutes and then sputtered a few times and died. now it won't idle at all, just starts and dies. if i poke at the throttle it will keep the engine alive but it's running rich or lean or something and doesn't sound healthy at all and is throwing a CEL the whole time.

i have been told before i tried installing this bov that i might have a bad o2 sensor due to some odd behavior after track driving. i don't know if this would affect it terribly but it ran perfectly before i tried doing this (further proof that i must be the worst mechanic ever...lol). i have no idea what's wrong. i'd rather not have to reinstall the old leaky, honky bov but at least that was better than a driveway peice.

i'd really appreciate any help you guys could offer.

sounds like a mass air flow problem to me.. try unplugging the mas and starting up the car.. just let it run like that see if it changes anything

sounds like a mass air flow problem to me.. try unplugging the mas and starting up the car.. just let it run like that see if it changes anything

really, it sounds like he forgot to plug his mass air flow sensor back in after he was done with the installation.

really, it sounds like he forgot to plug his mass air flow sensor back in after he was done with the installation.

Bingo :grinyes: Been there myself. Make sure it's plugged in, and make sure you put your entire intake back together. You probably just overlooked the obvious...doesn't make you the worst mechanic ever.

i thought that too but i couldn't get it unplugged when i was taking it apart, despite my best efforts with plyers. i wonder if maybe i just unseated it enough with the plyers that it looks on but isnt?? ill go try that. thanks!

okay, pretty sure the mas is bad. it runs "fine" when its unplugged. it wont boost over 7 or 8 psi and smells rich sometimes but with the mas plugged in it really doesn't run. so that would mean a bad mas right?

-edit- and its still throwing a cel, both with the mas in and out.

Have you bothered to pull the code yet? That pretty much tells you what is wrong. MAS going bad at the same instant you are installing your BOV seems a bit far-fetched unless you damaged it.

i bet its probably pretty basic, but i've never pulled a code before. how do i go about doing that? palm pilot & datalogger cable plugged into the ecu?

Datalogger, or this (http://www.stealth316.com/2-diagcodes91-93.htm)

probably a massive vacume leak from something you didn't plug in or hook up correctly. So when you plug in the MAS it gives enough fuel for the air that it sees, but it is getting more air than that so it dies. I would check all your vacume lines and pressure test.

doesn't advance,auto zone pull cel codes for free * if you could make it there*

only on 96+ cars because that is when everything became a standard(OBD-II)

ooo i know 94-95 was hybird but i thought frist gens where obd I

First gens are obd1.

yeah, i drove the car with the mas unplugged. i hear a something leakin' terrible. this might sound retarded, but i had to get a bigger pipe to fit the adaptor flange i had made and the plug on the y-pipe was too small so i wrapped some duct tape around it for a snugger fit, i did the same thing on another plug but i can't remember where. i thought it would be air tight but i bet that probly where it's leaking. im going to pull the whole thing apart again today and maybe put the old stuff back in if i can't find the leak.

is it also possible that the BOV i got is bad? it almost sounded too good to be true, $30 shipped on ebay... but it looks fine except for a small dent in the top part.

I got a stock 1g 3s BOV for sale if you need it.

i'd like to see if i can get this BOV to work first. i'll let you know on wednesday. i got caught up with other things today and ran out of time to open the car up so i'm going to have to do it tomarrow.

but just in case this BOV has ebay-itis and is messed, what are you selling yours for? i know i could get a stock replacement to work just fine. is there any appreciable difference between the two?

ooo i know 94-95 was hybird but i thought frist gens where obd I

That still doesn't make them OBD-II


Little background on OBD(on board diagnostics)
The first and only real standard was OBD-II, anything before that could be named anything you want to call it. In our world 91-93 3S's are called OBD-I because of the DSM world. 96+ DSM's are OBD-II, and everything before that, 90-95, was the same. So it was easy to just call it OBD-I, however it never really did have a name. Its just the 1st Gen DSM OBD. Our hybrid, 94-95, comes in because we were using DSM loggers for 91-93 and OBD-II stuff for 96+, so someone gave it the name hybrid, it could just as easily be named 1.5, or OBD-Larry for that matter.

0.o??? i've always herd obd I was a actual thing used in multiple cars... and i that they make code readers for those to hence advance/auto zone could pull the CEL

omg, i'm sucha noob. you know that gigantic hose that connects to the back of the airsplitter? the one that would really mess your car up if you forgot to plug it in? yeah, i forgot to plug it in... runs fine now, lol.

but the new BOV is great considering the whole project cost me maybe $50. without even touching the boost controller, boost jumped up to 16psi when i tested it whereas it was at ~14.5 before. I immediately turned the boost down but it definitly shows that it isnt leaking boost anymore. the boost jumps right back up after shifting and it doesn't smell like it's running so rich anymore. im so glad i didnt fork over $200+ for some aftermarket BOV. i'd rather have the aftermarket sound but the price for that is way too much for me to justify.

now i have more money for real go-fast goodies like exhaust cans and stickers.

So was it a one bov only deal for the guy or does he have them form time to time if it works that great for you and he has alot do i hear Group Buy lol hey thats how 3si lifter deal came bout isn't it? Ebay best friend or worse enemey. I'm gonna find out soon with my d/p

as far as i know it was a one part deal. probably upgrading his eclipse or something. i can't see someone turning a good profit by selling them at $30 shipped unless they were getting them for free, lol.