My H.O. conversion has FINISHED. she RUNS. yep.

Topic: My H.O. conversion has FINISHED. she RUNS. yep. (Read 6705 times) previous topic - next topic

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #45 – January 11, 2007, 11:33:20 AM

thanks, vin!

update---

http://www.foxtbirdcougarforums.com/showthread.php?t=8208&highlight=injectors

that was the thread i found. i checked everything TurboCoupe50 and jcassity mentioned. all was fine with the TPS.

but the injector's white wire shows like .002 yes .002 volts, the red one 11.83 (battery was a little low im charging it back up now. the battery was 11.96 volts)

this is with one lead of the voltmeter on a grounding post, the other on the injector contact. is this the way to do it? each lead on one of the two injector contacts shows nothing, no voltage across em.

i pulled off the "pepper shaker" lol, so for the pass. side harness. i left the one lead connected to the white injector wire (i was using the one for cyl. #1 BTW) and touched the other to each of the round pr0ngs in the male plug of the "pepper shaker", and only the one in the rear of the engine bay (when the plug is oriented as it would be hooked onto that bracket that clips to the upper intake) made my voltmeter "beep!". for the red lead, all of the others, including the center one, made it beep. not sure what this means, but if thats the way is supposed to be my wiring harness isnt cut or corroded or something.

checked the fuel pressure reg. vac line, hooked up another small hose to it, blew into it, was able to move air, so thats not clogged or anything. this car also ran GREAT before this so how could the reg. suddenly go bad?

what else can i check?

EDIT---------------------------------

alrighty i found out on fordfuelinjection.com how to get codes. here are the tally marks i made. i made spaces for everywhere there was a significant pause (blinks were always like 1/2 second apart) (underscore = a space, the forum ignored my large spaces and considered them one space)

||___|___||___||||___||___|___||___||||___|___
||||||___|||___ |||||||___|||

which looks like it corresponds to 3 codes-- 21, 24, and finally 63.

on their site

21 - "ECT out of self test range 0.3 to 3.7 volts." has an "X" in all three columns, KOEO, CM, KOER

24 - "ACT sensor out of self test range 0.3 to 3.7 volts." again "X" in all columns

63 - "TPS circuit below minimum 0.6 volts." this has "X" for KOEO

Also 63 - "TPS circuit has intermittently failed below minimum 0.6 volts." this has "X" for "CM"

for 63--that was the last code, i think in the CM part, as the guide describes, not in Key On Engine Off, the first codes that come up. so it sounds like it isnt the constant "below minimum of 0.6, just intermittent". great or terrible? id know if i understood the difference between those two possibilites.

i do have my old TPS. could i try that? apparently (from Coolcats) youre supposed to use a mustang TPS? this TPS came with the TB i bought.

but how about the Engine Coolant Temperature sensor and Air Charge Temperature sensor? my Haynes manual says they influence fuel control/mixture. so they could be causing no fuel to be input? what do i do? check the connections? replace them? they were never removed from the lower intake/tinkered with/anything during this process. only unplugged from the wiring harness.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #46 – January 11, 2007, 03:39:53 PM

I don't think it's the ACT.You don't think it's the computer do you?Just another wild guess.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #47 – January 11, 2007, 04:04:59 PM

well that would sure suck if i got shafted AGAIN wouldnt it?

theres no other sticker on the computer i got from NAPA, only the one on the port which proves to be a Speed Density computer. interestingly it looks like the old one, not painted glossy black like the one from advance auto.

are there ways to tell for sure if the computer is right/wrong?

jeez its like i need a neighbor or something with a speed density mustang so lend me his computer to try it with

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #48 – January 11, 2007, 04:18:08 PM

I'd loan you mine if you were closer.I am really wondering about the computer,though.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #49 – January 11, 2007, 04:26:50 PM

well ill keep that in mind! its always a possibility.

i kinda wish id tried this other stuff with the first new computer. just for shts and giggles.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #50 – January 11, 2007, 04:29:11 PM

I'm starting to guess the computer too. If the car ran fine before you started the swap the ECT and ACT shouldn't be bad. A screwed up TPS shouldn't cause the car not to start. Mine was fugged up and reading under .6V and the car still started, but it idled like ass. Unless you some how managed to short/cut a wire when you did the swap with the correct computer the car should start. If worse comes to worse go to a wreaking yard and pull the computer from a speed density Mustang or 88 up Mark VII and see if the car starts.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #51 – January 11, 2007, 04:46:10 PM

Take the computer back and try again.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #52 – January 11, 2007, 07:01:44 PM

Put your SO computer in. it will run like ass but it will run, that will let you know if its the ecu.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #53 – January 11, 2007, 09:29:52 PM

okay--

called my cousin up at his shop, his friend mark was in whos a real electronics guy.

he too suggested to run the SO comp. so i went back to NAPA gave em the computer, got myself back the SO and cash.

i put it in tonight. tried it. keep in mind i havent tried carb cleaner since like this morning.

didnt start but it really wanted to. there was that pattern again of it trying to fire, and one time when i shut the key back off just afterward i heard a lowly "PUHHHFFFF" through one of the flomaster dumps which must have been one cylinder firing.

i also had a talk with my uncle and i decided im heading up north for about a half hour, forty minutes to an auto parts store with a salv. yard, that i know has like 10 stangs. they said awhile back over the phone they had what i need.

but mom wanted me to get a new one cuz of my experience with the canadian guy on ebay....

has ANYONE here done this conversion with a new computer? my uncle talked to a friend of his tonight before talking to me who REALLY knows ford everything, including eec-iv. he said sometimes there is a "prom" (uncle doesnt know elec. stuff, thats what he said wayne told him) that is inside what looks like a "trapdoor" on the computer that often is not there when just buying a new unit straight out of the box like this.

it seems everyone here knows someone chucking their SD stang comp or does-it-ebay. so im going back to that. im getting one from a once RUNNING VEHICLE.

and then we'll see. my uncle mentioned the injectors. but they looked fine and FordTruckFreeek is a very upstanding member of this forum. i trust he gave me good injectors. and how the hell could ALL EIGHT be totally shot at once. i also need to try mark's other suggestion. but i dont think mom will be up to this one so well see--"have someone grip an injector and crank it. if its firing it will feel like a relay or something, you feel a "click" inside it as it acutates"

thanks again guys, for all your help!

the other Pauly

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #54 – January 11, 2007, 11:33:58 PM

I'll sell you a great Mark VII computer if you get stuck for $40.00 shipped.I know it's good,I used it before I put the Stang computer in.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #55 – January 11, 2007, 11:51:40 PM

thanks for giving me another to fall back on!

right now i wanna see if i can get 'er goin' before i go back to school but if the computer still doesnt go well i will definitely fall back on this option. the one i can trust the most, incidentally, one from someone here who knows it will work for our cause

gotta update...i think shell be okay!

Reply #56 – January 14, 2007, 11:43:12 PM

take this for what it is but i think its good news.

tied the throttle wide open for a day cuz i was fooling with the carb cleaner again. this morning i tried my old MAP sensor just to be 100% rock solid sure theres no issue with that because it HAS been changed right, and hey, you never know.

no difference between the 2 MAP sensors BUT (keep in mind throttle was opened overnight so NO extra cleaner fumes left, bone dry) even though she didnt run, she wanted to. there was a constant pattern of it trying to fire, speeding up the cranking for a split second like a couple nights ago. forgot to try gripping the injector, but i think theyre firing!!! it kept doing that for like 10 seconds, theres no way there could be enough carb cleaner left over!

sent vinnie the MO, so maybe ill have a computer by friday, mom will bring me home for the weekend and ill try 'er out! im real hopeful, i want so bad to hear the sound this exhaust setup is going to make. hope the week goes by fast.

if i got the time ill be postin up audio or video, im sure you guys would love that.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #57 – January 15, 2007, 01:16:35 AM

Your timing has to be off. Its nat advanced enough.

Got vin's computer....no dice

Reply #58 – January 19, 2007, 08:44:26 PM

I came home for the weekend, swapped in his computer, didnt start. Decided to try something new just to verify it could run good--had mom crank it, and i sprayed carb cleaner (boy that hole in the throttle plate is nice!) and once it started i continued to spray, and interestingly enough, spraying full blast was enough for it to idle about where it should. then i stopped, and i guess the upper intake, etc is long enough that it took about 5 seconds (sprayed for like 10) to run out of cleaner and then die. but she sounded NICE. *sigh* if only it could keep doing that...

so i guess we're back to "no injectors firing". but then why would it sputter? that makes no sense to me (and yes it still sputtered with vin's computer, BEFORE carb cleaner.

i pulled the codes and got different ones this time.

still got 24, "ACT sensor out of self-test range blah blah......"

and then after the long pause and then the 1 blink and then pause, i got

11, "System pass!"

does this mean anything? its interesting how those other two just disappeared. although that was done with the computer from NAPA so who knows...

oh! EDIT---
had a lightbulb moment--decided to try "jumping" the injectors. i just hooked up two leads, one to each terminal of the injector, and touched em to the battery, "click!" tried this with 3 different injectors at the front of the engine (2 on pass side, one on drivers) that i can easily access, theyre all fine. (not that i didnt trust you FordTruckFreeek!) but i HAD to rule it out, partly because on several phone calls to my uncle he kept mentioning "well if you changed the injectors thats another variable, they could be bad"

so theyre not bad.

im thinking i need to check some grounds. FINALLY found a thread on the corral--http://www.corral.net/forums/showthread.php?t=721775&highlight=voltage+injectors and people mention the different grounds. the guy actually ended up getting somewhere doing this. so im going to check mine.

http://www.corral.net/forums/showpost.php?p=5413585&postcount=94

im going to try that too first--manually grounding the white wire of those three, and all at the same time. that way for sure there will be some noise/shaking if theyre firing.

BTW id like an answer on this too if anyone knows.
theres a little tiny connector on the injector wiring harness, like the one that goes to the "oil pressure sender" according to this: http://www.veryuseful.com/mustang/tech/engine/images/mustangEngineHarness.gif link posted to everything there besides images/mustangEngineHarness.gif and it IS very useful nice stuff there. but anyway in that diagram its number 11, i noticed it when i was taking off the lower intake. it wasnt hooked up to anything and i cant find anything to hook it up to. the diagram says coolant temperature sender. but the ECT sensor is already there, doesnt that take care of this? im guessing this isnt relevant to my problem but im just curious.

My H.O. conversion has FINISHED. she RUNS. yep.

Reply #59 – January 20, 2007, 10:27:48 PM

you heard right guys. my troubles are over. essentially. (more on that later)

YEAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!
man what a rush it was hearing her finally git goin!

i had enough little alligator clip leads (thanks dad!) to make connections from the red wires to their injector terminals on the 3 inj's that were accessible, and enough to ground them manually. she cranked for a sec and sputtered to life, on 3 cylinders!!! :hick:

so that was it.

then i felt stupid. take another look at that "engine harness" diagram. look at number 19, the last one...turns out that this wire was about 1.5 inches long, cut off. noticed it when taking everything apart. i have NO idea how i missed the rest of it falling off, because it could not have been missing the past couple years ive been driving this thing. i grounded this wire and she fired right up like it was nothing.

why is that thing labeled as the oxygen sensor ground? arent the oxygen sensor groundS the wires from the group of wires going to the o2 sensor, which branch off to one of the two bare metal rings you bolt onto each of the heads? if not what are these and why wouldnt the car run without this stupid tiny little SOB grounded?

now heres why i said "essentially" at the beginning of the post. my gas mileage has taken a dive and so has the power!

:( normally cruising 30-35 mph on a flat road she'll turn between 25 and 30, maybe more MPG. 65 mph, about the same, though often 27 right on (like the EPA estimated!!!)

now it spends a lot of time around 16 MPG. im thinking o2 sensors? any way to test em? i did lengthen the wires, if you all recall, maybe the connection isnt good? how sensitive are they to that? i guess i could have mixed up the two black wires, im not gonna sit here and claim im perfect by any means.

well, at lest she's running. thats a huge weight off my shoulders, and very uplifting. the power/gas consumption issue will be for the next weekend im home from school, maybe next weekend, maybe the one after, if mom feels like it.:D

WOOHOO!!!!:cougarsmily: