Page 1 of 2 12 LastLast
Results 1 to 25 of 33

Thread: Problem!!!! WTF

  1. #1
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Problem!!!! WTF

    Ok so well i went out to my car today and it wouldn't run right. My car is a 1987 prelude A20a3 that i have put a turbo on. The turbo is a td04 mitsubishi, i have an MSD 255lph fuel pump 450cc DSM injectors an MSD 6al ignition box and a blaster 2 coil. Also i have an SAFC 2 and an adjustable fuel pressure reg.., and an AEM wideband air/fuel gauge. The problem i noticed was that when i drove the car it sputtered and ran llike crap, the air/fuel was at 10.0. I tried driving it like this to no avail, i also noticed that after about an hour of fucking with the car i had black smoke coming from my tailpipe and that i had lost about half a tank of gas...I don't have any clue what could have gone wrong because the car ran great just like normal the day before(yesterday). WTF help me if you can i hope that's enough info. Let me know if i need to clarify anything else..



  2. #2

    bobafett's Avatar
    Join Date
    May 2002
    Vehicle
    Stock 86 Accord LXi Hatch
    Location
    Longview, WA
    Posts
    6,545

    Re: Problem!!!! WTF

    what is your fuel pressure at? what is your timing at? and what are your SAFC settings?

  3. #3
    Accord of the Year - 2006

    guaynabo89's Avatar
    Join Date
    May 2002
    Location
    FL
    Posts
    4,144

    Re: Problem!!!! WTF

    I say start with the simple thigns first.
    Look at your spark plugs cap rotor plug wires check for vacuum leaks or just anythign in the engine bay out of place.

    Did your battery die and maybe you lost the settings n the afc. IS the vac line to your map and fpr sensor good. All the sensors and parts working properly/

    Dont brake your head start simple. Plugs will tell the tale.

  4. #4

    shepherd79's Avatar
    Join Date
    Apr 2002
    Vehicle
    01 Civic lx auto; 03 Accord EX
    Location
    Falling Waters, WV USA
    Posts
    9,466

    Re: Problem!!!! WTF

    yah, start with plugs and go from there. make sure you do the compression test.
    Alex.

  5. #5
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    Well fuel pressure is at 25 psi (didn't change), timing seems to be the same as it was... and the safc settings are all the same i didn't even mess with it, i even reset it to the second data source and mapped it out again just incase the first setting was messed up or something. I'll do a compression check right now.

  6. #6

    Bglad420's Avatar
    Join Date
    Apr 2005
    Vehicle
    90 ED7 Si
    Location
    Bellingham WA
    Posts
    1,559

    Re: Problem!!!! WTF

    ........
    Last edited by Bglad420; 02-23-2007 at 07:36 PM.
    I can't read the signature rules so MrBen deleted my signature.

  7. #7
    SEi User
    Join Date
    Feb 2004
    Vehicle
    86 Accord LX -EFI OBD1 Turbo, 2006 Ram 1500
    Location
    Panama City, FL
    Posts
    1,401

    Re: Problem!!!! WTF

    Quote Originally Posted by Bglad420
    Hey dude wheres my speed sensor? I opened a claim with paypal.
    I think you could have sent that to him in a PM or in the for sale thread where you bought it.



    Why are you running the fuel pressure so low? It should be around 37-39. some one correct me if I'm wrong.

    If you used a lot of gas then it sounds like there may be a problem with the injectors mainly the wiring to the injectors. Like they are constantly staying open. Or the ecu is getting a bad signal and telling the injectors to stay open longer/more often than they should. I would cover the simple bases first that the other guys have said.

    Pgm-fi conversion 4-16-05
    OBD1 11-25-06
    Turbo 2-26-07
    Tuned with eCtune 239whp 237wtq

  8. #8

    shepherd79's Avatar
    Join Date
    Apr 2002
    Vehicle
    01 Civic lx auto; 03 Accord EX
    Location
    Falling Waters, WV USA
    Posts
    9,466

    Re: Problem!!!! WTF

    you are right 25 psi is not good. you need to run at least 32psi.
    did you lower it to compensate for too much fuel? use setting on SAFC to control the amount the fuel.

    PS. conver to OBD1 and you can dial in the duty cycles of your injectors. a lot better to control the fuel flow.
    Alex.

  9. #9

    bobafett's Avatar
    Join Date
    May 2002
    Vehicle
    Stock 86 Accord LXi Hatch
    Location
    Longview, WA
    Posts
    6,545

    Re: Problem!!!! WTF

    yeah you can only pull 50% fuel with safc though... might not be enough to get the 450's to idle properly... but still I agree, super scary to be running less than 30psi of fuel pressure.

  10. #10
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    It always ran fine on that and that is how i left it(refering to the low FP). How could the wiring to the injectors go bad all of a sudden. But that sounds logical about the injectors staying open. My AFC settings never changed, they are at 50% at low and high throttle almost all the wat across(to about 4500 rpm).... I found a good vaccum leak today but it didn't fix the problem. I also diconnected the map sesor and put a mightvac on it and pumped it to 15 in. and the car ran great. So i think it is just a vaccum problem but where? Fuck this sucks. I'm getting like 10 miles to the gallon now.. I was getting 24.

  11. #11
    LX User PearlDrummer00's Avatar
    Join Date
    Dec 2006
    Vehicle
    1988 accord LX-i
    Location
    Seattle, WA
    Posts
    100

    Re: Problem!!!! WTF

    i saw you mentioned that your air/fuel ratio was at 10....well i heard for a typical turbo charged 2.0 liter you want that ratio to be around 12.5...i think stock is about 14.7 so 12.5 is rich enough to cool pistons and valves and such but not to rich to cause problems....This might help but i dont kno...i just started researching turbo ideas lately

  12. #12
    SEi User
    Join Date
    Feb 2004
    Vehicle
    86 Accord LX -EFI OBD1 Turbo, 2006 Ram 1500
    Location
    Panama City, FL
    Posts
    1,401

    Re: Problem!!!! WTF

    Actually running rich will make you run hotter not cooler. When i put my FPR with a cheap gauge on and set the gauge to ~37psi the EGT(exhaust gas temperature) was higher then when i set it to 37psi on my electric autometer fuel pressure gauge. I could tell the car was running rich also from the smell of the exhaust the way i had it set with the gauge on the FPR.

    Pgm-fi conversion 4-16-05
    OBD1 11-25-06
    Turbo 2-26-07
    Tuned with eCtune 239whp 237wtq

  13. #13

    bobafett's Avatar
    Join Date
    May 2002
    Vehicle
    Stock 86 Accord LXi Hatch
    Location
    Longview, WA
    Posts
    6,545

    Re: Problem!!!! WTF

    too rich will make your egts go high, and so will too lean. from what i understand anyway...

  14. #14

    shepherd79's Avatar
    Join Date
    Apr 2002
    Vehicle
    01 Civic lx auto; 03 Accord EX
    Location
    Falling Waters, WV USA
    Posts
    9,466

    Re: Problem!!!! WTF

    Quote Originally Posted by 87preludeA20A3
    It always ran fine on that and that is how i left it(refering to the low FP). How could the wiring to the injectors go bad all of a sudden. But that sounds logical about the injectors staying open. My AFC settings never changed, they are at 50% at low and high throttle almost all the wat across(to about 4500 rpm).... I found a good vaccum leak today but it didn't fix the problem. I also diconnected the map sesor and put a mightvac on it and pumped it to 15 in. and the car ran great. So i think it is just a vaccum problem but where? Fuck this sucks. I'm getting like 10 miles to the gallon now.. I was getting 24.
    i am assuming you still have black box. open the box and see if there are any problems inside.
    Alex.

  15. #15
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    Yes i do have my black box. .What could i visually look for???

  16. #16
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    Oh and just to note, i don't know if this matters a whole lot but i matters. The car backfired a good lean backfire on the way home from driving it that day, but it didn't seem to do anything at the time as far as drivability.

  17. #17

    89T's Avatar
    Join Date
    Apr 2004
    Posts
    3,020

    Re: Problem!!!! WTF

    plugs and compression test. how did they look?
    once more put in the btm.

    trust me from experince i burned a hole in a piston the size of a quarter,the stupidest mistake i ever made.
    instead of buying a $300 part i had to buy a $300 part and $1200 for the engine rebuild.

    that reminds me where is you'r timing set at?
    un-motivated!
    someone make me an offer i just could not say no to.

    3GR

  18. #18
    2.0Si User SQ is the SQUAD's Avatar
    Join Date
    Jun 2001
    Vehicle
    1989 LXI Coupe Kswap, 1989 LXI Bswap
    Location
    Boston MA
    Posts
    2,860

    Re: Problem!!!! WTF

    id say do an odb1 conversion and run crome
    Style Quality Uniqueness And Design
    S.Q.U.A.D. Engineering
    www.squadengineering.com

    http://www.facebook.com/squadengineering

  19. #19
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    I changed my Map today and that did nothing, i also remembered that i got an overheated O2 code several times running on the freeway and so i'll check that to see if that is any good. I also may check the water temp sensor because that may have gone bad for some reason who knows...??????

  20. #20
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    Hey guys don't give up on me here, i don't want to hear OBD1 because that is not the issue here. Any ideas on any sensors that went bad and how i check them??????????????????????????????????

  21. #21
    Accord of the Year - 2009

    thegreatdane's Avatar
    Join Date
    Jan 2003
    Vehicle
    Accord 2.0i-16 '87 - Accord Aerodeck EXi '89
    Location
    Denmark/Europe
    Posts
    2,898

    Re: Problem!!!! WTF

    Is your map sensor and TPS sensor functioning correctly?


    Link to my 3geez garage
    • Accord 2.0i-16 '87 B20A2 DOHC 16v
    • Accord Aerodeck EXi '89 Exclusive Edition

  22. #22
    3Geez Veteran AccordEpicenter's Avatar
    Join Date
    Nov 2002
    Vehicle
    1988 Honda Accord LX-i Turbo 2004 Acura TL 6 speed/navigation
    Location
    Ridin Dirty in New York
    Posts
    7,377

    Re: Problem!!!! WTF

    check to see that your map sensor is functioning and that the wiring is still good and the vac lines are still hooked up to it. The way you can check this is go to monitor the map signal in the safc, if you see it changing when the car is running then its probably ok, but if it stays the same its probably your problem
    429whp 362wtq A20 TURBO. A20T>*

  23. #23

    89T's Avatar
    Join Date
    Apr 2004
    Posts
    3,020

    Re: Problem!!!! WTF

    compression test/leak down?
    bad o2 would put you in limp mode thus dumping fuel.
    bad ct sensor will do the same.
    leaky/bad injector will do the same.
    bad fpr.
    bad wiring.
    if you have an fmu get rid of it. use the stock fpr or get a 1:1 fpr.
    if you don't start giving feed back on our segestions how can we help.
    un-motivated!
    someone make me an offer i just could not say no to.

    3GR

  24. #24
    3Geez Veteran AccordEpicenter's Avatar
    Join Date
    Nov 2002
    Vehicle
    1988 Honda Accord LX-i Turbo 2004 Acura TL 6 speed/navigation
    Location
    Ridin Dirty in New York
    Posts
    7,377

    Re: Problem!!!! WTF

    Quote Originally Posted by 89turbo'ed
    bad wiring.
    if you have an fmu get rid of it. use the stock fpr or get a 1:1 fpr.
    if you don't start giving feed back on our segestions how can we help.
    absolutely
    429whp 362wtq A20 TURBO. A20T>*

  25. #25
    LX User 87preludeA20A3's Avatar
    Join Date
    Aug 2005
    Vehicle
    1987 Honda Prelude
    Location
    Southern Cali
    Posts
    385

    Re: Problem!!!! WTF

    Soory i haven't been online in a few days. But i fixed the problem the other day and i am pissed at myself. It was a short in the RPM signal wire to the SAFC. I went to start it the other day and the whole car just died and the fuel pump and SAFC didn't work at all at that point. So i was like fuck!!! So i opened the hood and checked the fuses and i blew the regulator fuse(10amp). So i put a new one in and the car started but ran like crap still so i messed with some wires under my dash that go to the MSD 6 AL box and the car died again. I found that my RPM signal wire was loose so i reconnected that and the car started again and started to run good again. I also bumped my fuel pressure up to 40psi and that maked the car run more towards rich than lean, more in the neborhood of 14:1. So yeah that sucks that it was that simple but that was the problem....

Similar Threads

  1. accord lxi idle problem and start problem
    By sonusa in forum EFI Tech
    Replies: 14
    Last Post: 08-21-2006, 09:05 PM
  2. Replies: 7
    Last Post: 08-11-2005, 04:17 PM
  3. Whats wrong with my car? hesitation problem & starting problem!
    By gsus in forum Classic Honda Community Chat
    Replies: 2
    Last Post: 08-11-2005, 08:04 AM
  4. Exhaust problem? ( Auto Trans Problem )
    By Jay's89Lxi in forum 3geez Accords
    Replies: 5
    Last Post: 01-18-2005, 04:24 PM
  5. Cold car accelerating problem and also a temp problem
    By chiller670 in forum 3geez Accords
    Replies: 2
    Last Post: 12-23-2003, 08:23 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
     
Links monetized by VigLink