wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

well title basicly says it all...i have an ls-t that i cant get running. i have crome with p30 program with -28 maps and boost tables with 450s and OBD-1 swap. i couldnt find a schematic on here for my dizzy so i printed the ones off of alldata and came up with one that got me spark and fuel. do the cylinder ID wires need to be ran to the computer? i tried going into crome and changing my map and i cant take any more fuel out. my wideband wont even register it just says "rich" haha. one thing i did notice is when i try to go change from 240s to 450s and from 1500 cc to 1800 cc it doesnt save it? when i click ok and go back to it, it still says 240cc injectors 45 psi and 15xx cc displacement, is this normal? thats really all i can think of right now...if i think of anything else ill add it later. this has me stumped...thanks in advance for any help

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

bad injector or shitty tune, figure it out :1

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

ive read the guide and all this but i got pissed and sat down and looked at my maps tonight and i figured it out. i stared at them for about 45 min and messed around with them and burnt a GOOD basemap now i got a decent running car no more puddles of fuel!

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

Did you forget to scale for the 450s?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i went into the multiplier calculator typed in 450 in the new injector flow rating and changed the new engine 1834cc. it ran better than befor but its still REALLY rich. i went to xenocrons .bin dump and found a map thats pretty much my set up. its the Jon-Ls-DA-4.bin and the car still runs really rich. theres gotta be something else im missing... ive went over every plug on the car compaired a BUNCH of maps and i still get the same results. i dont really like asking for help on stuff but my nerves are at their limits now

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

try taking 5% fuel out of the whole map. you have a wideband to monitor it right?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

Reburn your chip for 450's. I had a map that was suppost to be for 450's.. It wasnt and the problem was exactly like yours. Retune on uberdata or crome.. Try uberdata because chrome does that stupid ---- your taking about until you figure it out.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

crome makes all the changes. it just doesn't remember it and show you what youve done when you look at it. you have to remember on your own.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i change the injector sizing and it shows like .533 in the adjustment...i hit OK and it changes the map. ive tried to take 5% out...PLX says "rich" and jumps to about 11.3 when i let off the gas... just like it should...ive took 5% out for like 3 times then i jumped to 25% with the same results untill the maps read 0 for the first few cells...im stumped... :1

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

what maps sensor do you have?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

pull plug wires one at a time to see if its an injector.

i had problems before with my fuel rail being too tight, and "pinching" in injector semi-shut.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

map is stock. if it was pinching it shut wouldnt it run lean? ill check it out anyway :y

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

who ever made the rom you are using probably isn't using a stock map. could be a motorola or a gm you may need to make your own rom. just import the tables from the rom you want to use and when you add boost tools select your stock map.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i tired that too. it still wont do it. at first it was MY map and i started looking at other peoples maps and mine was screwed so i redid one...that one looked a LOT better but then it still did the same thing... then i tried that other map i posted and it still did it. i could take fuel out of it and get it to run a little better but it still wouldnt idle. i know the soldering and all is good because i put the computer in my brothers car with a p28 map burned to it with a 2500rpm rev limit and it only reved to 2500 so its not that.

my complete setup is
88 crx si
b18a1
p28 kind of on crome
xenocron conversion harness
plx m300
moates datalogging
skunk 2 intake manifold
drag exhaust
.48/.60
hmt style 3 inch exhaust from the turbo back and charge pipes
11x31x3 intercooler
xs wastegate
greddy type rs BOV

i doubt that helped anyone much but just incase. ive been through everything i know to do short of make a map in uberdata and see what happens there. maybe ill try that and burn it tomorrow.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

Oh okay dude. I'd say it's a mechanical problem now. with the car running take a screwdriver hold the tip on each injector and put the handle to your ear. you should hear clicking from the injectors opening and closing.

If one isn't clicking you have an injector stuck open. have you checked your plugs I don't remember if you did or not. If one is wet and black and the others aren't that will tell you to. see if you can find some other injectors to swap over to just to check it.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

yep, i checked today to see if uberdata would fix it with no luck. i didnt get a chance to check the injectors today but i pulled the plugs and yep, you guessed it, theyre fried. i reckon ill get some more tomorrow, check my injectors and see what happens from there. ill let yall know, thanks

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

a friend of mine had the same problem, we went through everything thinking it might be the tune, then checked all the sensors...ended up being a faulty injector. hope that solves your problem.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

welp i reckon the injectors are going to diesel equipment tomorrow to be tested and repaired if any are messed up. ill let yall know what happens. thanks a lot

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i put some 240s in it the other day and it freakin ran fine with the john-ls-da-4. i dont understand... i got my bossman in on it today, hes tryin to figure it out too but idk how much hell come up with. is there any KNOWN good maps for 450s out there?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

Well that shows you right there. when you switched to the 240's it ran fine.. Um atleast one of those 450's is fucked.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

definitly sounds like a bad 450

get them cleaned and flow rated at a company or just go for another set or a set of rc's

goodluck

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

welp, i think i may have found my problem...i drove the car into the shop today to mess around with it and i shut it off to do something the went to crank it again and what do ya know...no fuel pressure! i think i may have found some of my problem. so xenocron is getting some more of my money. diesel equipment is getting the injectors tomorrow they said 15 bucks a piece to do the works on them. ill let yall know what i come up with, thanks again for all the help!

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

its still in freakin limp mode! solid cel and i cant figure out why. ive tried three computers my chiped p28 my obd1 pr4 and my obd0 pr4 and they all show a solid cel. i was looking around the plugs checking all the wires because someone had an afc wired into it befor i got it by the looks of it and i just wanted to make sure all the wires had a good connection and i noticed that there are 2 wires that are cut... they are both on the center plug on the chassis harness. i looked in the alldata and in my manual and coundnt match up the colors for some reason. going off the numbers on the plug (top row 1-10 bottom row 11-20) there is a yellow wire in the 5th pin and a white and green wire in the 19th pin. what do these do? i looked allover and i couldnt find the other end of the wire? i cut the rubber cover off the harness as far back as i oculd and the other end of these wires are no where to be found. thanks for any help...i really want to have this thing on the road by the end of the week... :'(

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

post pictures. thats all I can say

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

ill try to get some tomorrow... :-\

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

ok, turns out the two cut wires have nothing to with it. apparently xenocron found they arent needed and didnt put them in his harness. i messed around with it some today and finaly got a code 6 (ECT) out of the obd0 pr4. the other pr4 and the chipped p28 are still in limp mode. i reflowed all the solder on the p28 just for shits and giggles but i really dont think that it did anything. i pulled all my charge piping out and checked every wire under the hood to see if i could come up with anything and nothing. ive went through a few pinpoint tests in the alldata just for the hell of it and nothing. i got the 450s working now, the car cranks and idles fine but dont try to take it past about 3-4 grand. im completely out of things to do...?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

When you did your obd1 swap, did the car run fine with no codes before you tried to chip the ecu? Meaning with your stock 240's, stock p28 and that jazz did you have any issues? Or did you do the obd1 swap and then put your turbo setup on without checking to see if it ran first? It could be something as stupid as your main relay starting to crap out, or maybe your obd1 distributor's not wired in properly. If everything checked out fine first though, I'm kinda stumped on this one without actually seeing the car in person ???

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

all was fine, im kinda leaning towards going back with the obd0 stuff and sorting it out from there and completely ruleing the obd1 out of it. that seems slightly more logical i suppose. im about to the point of making a wire with a male pin on it and putting it in each plug on the engine and grounding it. then finding the other end of the wire at the computer and checking continuity on it to make sure all the wires have no breaks in them. i reckon thats the last thing to do?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

where are you located? maybe someone on here lives near you and can look at it. it sounds like there are way too many variables to be able to troubleshoot this problem online. if you have never chipped a car before then there are even more. there are a lot of things that eperienced people dont really think about cause they do it a lot. also, what did the diesel place come up with on your injectors?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i KNOW its not the computer, ive put it in another car and it runs fine. the harness is right, xenocrons the man. fuel pump got put in tonight but i dont have much fuel in it so i dont want to run it long. im going to try to get it up to opperating temp tomorrow and see if it doesnt clear it up. i kinda wonder if it wasnt getting enough fuel pressure to keep it running right but it never went lean and never sounded like it actually hit a rev limiter it just spit and sputtered. if none of that works i got another dizzy that should be here in a few days to try. im in Greensboro NC if anyone is around this way and wants to come check it out one day and see if they have anything to add, just let me know. i appriciate it yall

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i was going through ANOTHER pinpoint test last night and one step said "is the oil pressure warning light on?" it isnt... would this make it go into limp mode? it got late real quick on me so i didnt get a chance to finish going through it. but it said there could possibly be an open in a wire. if i get done with everything i need to tonight early im going to test those wires and see what i can come up with. if anyone ever had that cause it, let me know. thanks a lot yall later...

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

no, the ecu has no idea if you have oil pressure or not, unless you have vtec, but you can disable that.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

i didnt think so, vtak is disabled... this is really starting to piss me off...

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

ECT really really fucks things up if you're throwing that code. Raw fuel, barely runs, white/grey smoke everywhere.

I just fixed a rotten ------- Integra that had a B20 installed in it, probably by monkeys. It was throwing ECT, IAT and TPS codes, which I *believe* all ground through the same pin on the ECU. I just ground them all off the valvecover, as the car is a wreck and the owner is annoying and calls me at all hours whining like a bitch. If it were my car, I would've run the wires back to the plugs properly.

Figure out the pins on the harness for the grounds + outputs for the ECT and go from there. Have you tried going through the diagnostics for an ECT sensor?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

no i havnt, i never really put that much thought into it because it only come up on the OBD0 computer. it is a one wire sensor so i suppose it just reads resistance correct? i reckon i could check continuity in the wire back to the ecu and get a new one seeing as how it cant be more than 15 buck. hell i actually have one in another block ive got ill just try that one if there is continuity in the wire. the engine sat for over a year befor i pulled it out of the car i wrecked and finaly got it running...and i know what sitting does to ---- so ill try that.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

OBD1/2 ECT is 2 wires, 5v input and ground. Check resistance across, and then voltage off the harness itself. The ECT sensor on the car was fine, wiring was fuxored.

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

you are correct sir! too bad i got pissed off at it befor i got it running right today. they did what you said and ran a wire to ground off the plug. there is another plug (the one i thought was right) that runs into the under hood fuse and splices into a green and red wire. i couldnt find it in any of my diagrams anywhere though. what confuses me is they cut the wire and ran the spliced wire back into the harness towards the engine not into the plug. idk guess i get to get back at it tomorrow... :-\

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

well, i found the pin that the ECT goes to now and with the OBD0 pr4 i have no more codes and the check engine light goes off like it should "yes its fixed!" WRONG! with the obd1 ecus it still runs like ass IF it will start. on the distributer, i wired it up just like the paper xenocron sent me said and i have 2 extra wires...they dont go anywhere? i think its the cylinder id wires...the computer dont need that to run?

Re: wont idle, raw fuel out the exhaust, breaks up above 2 grand, 450s+crome
 

what management are you using? With a solid cell on my P28 its one of a few things. didnt remove checksums, didnt use P30 optionbyte hack, or i didnt disable the knock. if that doesnt help get a new wireharness and start from new