Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > General Tech Talk

Thread Title
Removed Vafc, cel code 9, car runs terribly and vtec does not engage, sputters

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 05-25-2010, 12:32 PM
Bronze Member
 
Join Date: Nov 2007
Posts: 162
iTrader: (0)
silverlude80 is on a distinguished road
Removed Vafc, cel code 9, car runs terribly and vtec does not engage, sputters

Try to make this short as possible. I had a revhard turbo kit installed as well as a jdm 92-95 engine on my 5th gen 2000 prelude. I drove the car around with the newer engine and it ran great, perfectly smooth and great power. The turbo kit was installed by a reputable shop that specializes in hondas. Once I got the car back with the turbo kit installed, they had manually retarded the timing from the distributor all the way. The car ran pretty crappy, but it did boost. I went and advanced the timing myself closer to stock and the car ran a ton better on my obd2 stock prelude ecu. So I got a socketed and chipped p75 to run the prelude on a base map obd1 until I can get it tuned in a few weeks. None of the chips I got worked right, car was idling at 400 and would shut off but ran fine with stock ecu. I took the car to a different very reputable shop to have the vafc removed and test out the obd1 computer. Once the vafc was removed, the car started and idled fine but we did not test drive it. We tried the base map he quickly put together with the obd1 p75 and the car started and idled ok, not great. Once we took it for a test drive the car ran okay until vtec would engage around 5100 rpms and then it would sputter and act like it was hitting a rev limiter. I then put the ob2 stock computer back in (which worked absolutely fine before the vafc was removed). The car didn't barely run at all now with the stock computer, couldn't even get it going. They pulled the code and got cel code 9 cyp. They swapped the distributor and we had the same results. They mentioned it is probably the wiring on the connectors that the other shop rewired to make the distributor obd1 spec. I think they must have made a mistake when removing the vafc and hooking back up the stock wiring. Please advise, I am planning on taking it back to the shop that removed the vafc and have them check the wiring again. I asked them yesterday when they removed it if they could have made a mistake and they said it is only two wires. Having the engine, and turbo, and all of this stuff has been already a 1 month process, I can't get it in to be tuned until the 14th of june. I just don't want to ride around with my car in limp mode until then. Please advise.

Thank you
Reply With Quote
  #2 (permalink)  
Old 05-25-2010, 12:47 PM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Removed Vafc, cel code 9, car runs terribly and vtec does not engage, sputters

you cannot put a turbo on a stock motor with the stock ECU and expect the ECU to know how to handle boost.

which is exactly why you need a basemap on a chipped ECU which is specifically for the purpose of LIMPING your car to the tuner where he should be able to sort out all the bugs.

i LITERALLY limped my car to my tuner on 2 cylinders since my idiot friend confused two of the spark plug wires, so whichever ECU/dizzy combination ran the best, even reinstalling the VAFC to get the car to the tuner, just get it there and he'll make it run good.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #3 (permalink)  
Old 05-25-2010, 01:11 PM
Bronze Member
 
Join Date: Nov 2007
Posts: 162
iTrader: (0)
silverlude80 is on a distinguished road
Re: Removed Vafc, cel code 9, car runs terribly and vtec does not engage, sputters

I agree completely. I figured since the revhard kit was meant to be used with obd2 and stock computer it wouldn't be too bad until I got the ecu, software, and dyno time. It ran well before removing the vafc. I just want to make sure the computer I have is working properly as I just got it. also I want to eliminate this variable of the wiring so they can just slap it on the dyno and tune it instead of trying to figure al the wiring out.

Thanks
Reply With Quote
  #4 (permalink)  
Old 05-26-2010, 08:42 AM
Bronze Member
 
Join Date: Nov 2007
Posts: 162
iTrader: (0)
silverlude80 is on a distinguished road
Re: Removed Vafc, cel code 9, car runs terribly and vtec does not engage, sputters

Hey guys,

thank you for the good wishes. I was able to figure out the problem. I exposed all the wiring for the ecu to check everything out and make sure there were no issues. As I was unraveling each splice and electrical wire one at a time, I came upon a wire that basically fell apart in my hands. I took some of the extra wire from the removed vafc and just macguyver style spliced them together and viola, car runs extremely smooth, vtec kicks in prefectly and it pulls very strong. I did in fat have the turbo and engine installed by a reputable shop as well as having the vafc removed. I am sure many people that do aftermarket work have learned as they went and had poor work done in the past that was never corrected. For example myself and friends working on the car as well as hacked wiring jobs. I have had no problems thus far with wiring issues and the many electronic devices that have been installed have lasted 8 years. Things happen especially when multiple people work on your car. Just be able to empathize with that as nothing always goes right with any big project.

Thanks
Reply With Quote
  #5 (permalink)  
Old 05-26-2010, 01:20 PM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Removed Vafc, cel code 9, car runs terribly and vtec does not engage, sputters

good to hear

electrical problems are the HARDEST to find/diagnose. luckily you found your problem easily, and macgruber'd it together


be sure to post your results from the dyno and tune, i wanna hear/see this setup
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
the last vtec wont engage thread Kronicus 4th Gen Honda Prelude 2 04-25-2010 01:27 PM
need serious help bad something is terribly wrong hatchet 5th Gen Honda Prelude 6 10-30-2009 12:40 AM
Vtec engage light on idea! mogie 5th Gen Honda Prelude 16 01-30-2009 09:40 PM


All times are GMT -4. The time now is 09:25 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.