Hey guys, i just got an excellent price on a 92 GS-R last week so i went and picked it up. car just needed an exhaust and a battery and was ready to drive.
I’ve had the car for a week now and i’ve been having problems w/ vtec. i think i might have gone into it once. the problem is if i try to go into vtec, shift at about 7.5k, and then try to go back into vtec again in a different gear, i get a check engine code and i then have a rev limit of about 6700rpm. the codes i am getting are 20,21 and 22. the helms manual i have does not show anything about a code 20. code 21 and 22 have to do with the vtec solenoid.
I’ve checked for loose wires, i jumped the 1p wire to the battery to make sure it clicked and it did. my oil is full, and my speedo is working right. i dont really know what else to check. i read that the rev limiter might have to do w/ the distributor but then again shouldn’t it throw a code for that?
This car has been sitting for about a year before i picked it up and the ECU is chipped i believe for Uberdata i think he said.
I couldn’t really find a definite answer that had to do w/ my situation on here so i started a new thread.
ok i dont have the option of trying someone elses ECU but i talked to the guy i bought it from and he said it would probably be a bad idea anyways seeing how im running a b18c1 w/ low compression.
i’ve done a few tests to check the solenoid and took it off to check the filters and make sure everything was clean and it was.
now my car is kinda bogging a bit w/ a low idle. also, i can’t just really “cruise” in my car. it has to be go or slow down. if i try to just push the gas a little it make a weird noise in the exhaust and it bucks a lil bit.
but back on the vtec problem. i’ve gone through a few things in the helms manual for codes 21 and 22. my manual does not say anything about code 20.
anyone have any other ideas?
Check the ignitor. That’s what was wrong with my car over the summer, kept bogging out on me, loosing power and I ended up getting pulled over on 295 because It had problems in the 3-35k rpms and would bog…that was a nice ticket. But anyway. What ecu do you have in it? and is it still obd1 or did they convert to obd2?
he’s got the 92 gsr ecu chipped with uberdata (sp?) and its obd1. to convert a obd1 car to obd2 would be just stupid. there are alot more options for obd1 as far as tuning. people with obd2 car often convert to obd1 for that reason.
chad wish i could help ya. only thing i can do is let you borrow my vtec solenoid, but you said it checks out fine. i say get the o2 sensor in and go from there.
yea o2 sensor is on its way in. but i think he’s got it chipped to bypass the o2 sensor cuz it never throws any codes. can’t wait till i get this thing running nice.
im tryin to get the 92 helms manual. need to find out what code 20 means and whats causes it.
the guy says that its the stock §§§§§ so im gonna try my other one and see if it does anything.
You are probably running a p72 ECU. Its going to throw a code for ELD because our Gen doesnt have one and gen3s do. It’s under a gen3 “under hood” fuse box. When accessories are on it regulates voltage. Example: At idle-press on brakes, turn on heater or a/c,turn lights on. your idle might go down a tad. The Load Detector keeps a Gen3’s idle from flucuating idle due to loads. Don’t worry about that one. It will always throw that code. It doesnt turn on a dash CEL at all and it doesn’t effect anything. As far as code 22. Did you follow the steps in the Helms to properly diagnose the situ.? I’m sure you can substitute your ecu with any obd1 vtec ecu and see if the problem persists. Email me if you need a Helms Chapter.
he’s got the 92 gsr ecu chipped with uberdata (sp?) and its obd1. to convert a obd1 car to obd2 would be just stupid. there are alot more options for obd1 as far as tuning. people with obd2 car often convert to obd1 for that reason.
I know converting from obd1 to obd2 is stupid. I’ve been researching chipping ecu’s for 8 months, i think i already know that. But he said he’s got a b18c1, i didn’t know what year the engine was from, it could be an obd2 engine and the guy he bought it off of might have swapped it over…thats why I was asking I have no clue what the cars got.
As far as chipping, i still have my chip burner if you need to reburn a map chad. I’m going to see what’s going on this weekend since my dorms having a superbowl party, i’ll let you know if I can make it down on friday and saturday. We can try my ecu to see if everything checks out. I had to dissable the ELD so we can give it a shot, i’m running a p72 map
car is kind of backfiring now. :gay: this is crazy. thinking about ordering a new distributor.
*edit - just went outside and checked it out. my exhaust is either sputtering out oil or gas. the previous owner tells me that it can’t be oil and has to be gas. i need to get this thing tuned or something a.s.a.p. i have no idea whats going on.
Do you still have that other distributor. Try swapping the ignitors, i had to use the one from my ls distributor since the other one died. Theres no way to tell if the ignitors bad or not, ohm meters will say there still good. Trust me give it a try, you don’t want to end up like I did having to be towed home after work, i only got to the toysrus from best buy and it completely died. Your describing most of the the symptoms that I was having, i even bought a new denso o2 sensor before it died, didn’t do anything.
the igniter is the same between the 90 ls OBD0 dist. and the 92 gsr OBD1 dist.? if so i may give it a shot tomorrow.
*edit - did a search and came up w/ different part numbers for the 2. was your LS obd1?
yea mine was obd1. I don’t think there is a difference between them, but i don’t know what they changed between obd0 and obd1 on the distributors except the plugs
took both dizzys apart and the igniters are different. they have different places on the igniter itself where screws go into to mount it into the §§§§§. just gonna order one from dist. king i guess…
too late… ordered from dist. king. gonna be here tomorrow. installed the new o2 sensor and still running like shit. blackish smoke while under load. and the owner still insists on the fact that it isn’t oil.
if the dist. doesn’t do anything then i dont know what im gonna do. lol.
installed the new dist. this morning and its running a lil smoother but still backfiring. still running rich as hell. i was feelin brave so decided to try and go into vtec and see if it throws some codes. codes 20 and 22 now. no more code 21 :hmm:
next is new igition wires… i think that may have something to do w/ it. stock sumitomos from who knows when…
also gonna check fuel pressure and maybe install my fpr tomorrow.