Where do I connect the BOV? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 10-12-2007, 12:31 AM   #1
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default Where do I connect the BOV?

I am in the final stages of my FM II install but I can't seem to figure out where to connect my BOV. I am out of T connectors so I can't splice into another line. There is an unused port on the top of the intake manifold that points to the drivers side of the car. Can I use this or do I need to find somewhere else to source this signal? This is on a 99 by the way. Thanks!
posidon42 is offline   Reply With Quote
Old 10-12-2007, 12:37 AM   #2
I'm Miserable!
iTrader: (5)
 
bryantaylor's Avatar
 
Join Date: Dec 2006
Location: jacksonville, fl
Posts: 1,720
Total Cats: 0
Default

anywhere on the intake mani really
bryantaylor is offline   Reply With Quote
Old 10-12-2007, 12:40 AM   #3
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

so I can use that port? It has a cover over it right now and doesn't go anywhere. I just don't want to end up plugging it in to something that doesn't have a signal.
posidon42 is offline   Reply With Quote
Old 10-12-2007, 01:13 AM   #4
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,908
Total Cats: 1,793
Default

yep. it's a good spot for it.


the port is used for cruise control iirc. it goes directly into the manifold, which is where you want your source from.
Braineack is offline   Reply With Quote
Old 10-12-2007, 01:16 AM   #5
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

awesome. I am filling up all the fluids and hope to start it sometime tonight!
posidon42 is offline   Reply With Quote
Old 10-12-2007, 11:24 AM   #6
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

well no starting yet. I am still reinstalling windows XP so my Hydra software will work. I can't get it to work in Vista.
posidon42 is offline   Reply With Quote
Old 10-12-2007, 11:35 AM   #7
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

good luck, looking forward to seeing yet another boosted maita...beofre mine, damn you, lol
Zabac is offline   Reply With Quote
Old 10-13-2007, 12:05 AM   #8
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,372
Total Cats: 1,338
Default

Shitty. Megatune works in Vista just fine.

Savington is offline   Reply With Quote
Old 10-13-2007, 09:27 PM   #9
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

SUCCESS! She starts and runs. There is one issue I want your feedback on. For some reason the AC seems like it is on all the time now. I went out for a short drive and checked under the hood to make sure nothing was leaking and noticed the lower AC pipe that comes out of the firewall was iced over on the outside. I didn't run the AC while I was on my drive and didn't turn on any accessories. Is something wrong or does this happen normally and I just never noticed?
posidon42 is offline   Reply With Quote
Old 10-13-2007, 09:36 PM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,908
Total Cats: 1,793
Default

is the fitting leaking? or leaked. that's not normal cant think of a reason whyd it would happen.
Braineack is offline   Reply With Quote
Old 10-13-2007, 11:06 PM   #11
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

check for a short to ground on the A/C clutch wiring. It's possible that the wire got caught under something during your install and is grounded out. If it were a failed switch then it would turn off when the temp get's below a certain level before icing over. The other possibility is the A/C clutch itself has seized somehow.
Arkmage is offline   Reply With Quote
Old 10-14-2007, 03:03 AM   #12
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

where might I find the wiring for this? It definitely seems like something is wrong with the A/C as it turns on even when at idle. Is it possible I tapped into the wrong wire in the diagnostics port when connecting the electronic boost controller?

DOH!!! It just hit me what is wrong. When I was taking everything off the car, the bolt that tensions the A/C belt over torqued and broke. I just realized I never replaced this bolt when I put it back together. I am not sure if this would cause the problem, but it is a good place to start.
posidon42 is offline   Reply With Quote
Old 10-14-2007, 11:46 AM   #13
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

The A/C compressor is turned on via a an electric clutch behind the pulley. The bolt that tensions the belt would not likely cause this to engage, though it may be defeating it mechanically.

If the bolt doesn't bit it and you have to troubleshoot electronically, the clutch is controlled by the A/C relay. If a short is what's causing the system to come on, then we're looking at the control wire for this relay. It's a Blue/Black wire that goes from the A/C Relay (which is behind the left headlight) back through the firewall on the driver's side, to the ECU at position 1S.

Having the correct wiring diagram may be helpful: http://www.madracki.com/miata/images...g/2000wire.pdf (it's for a 2000, but this is the official Mazda diagram. The only online version for th '99 is the Haynes. This one is better as it gives physical locations for everything.)
Joe Perez is offline   Reply With Quote
Old 10-14-2007, 07:35 PM   #14
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

is there a way I can just disconnect the A/C? Something is definitely shorting or not connected right as the air is COLD as soon as I turn on the fan, and I can hear the A/C pump running from inside the car when I have the key turned on. HELP!!
posidon42 is offline   Reply With Quote
Old 10-14-2007, 08:36 PM   #15
Junior Member
iTrader: (1)
 
Join Date: Oct 2004
Location: Haarlem ,the Netherlands
Posts: 453
Total Cats: 0
Default

Just remove the cable from the compressor. Should be somewhere right behind your drivers side headlight. (single wire)
greddymx5 is offline   Reply With Quote
Old 10-14-2007, 11:05 PM   #16
Senior Member
Thread Starter
iTrader: (4)
 
Join Date: Aug 2007
Location: Omaha, NE
Posts: 619
Total Cats: 0
Default

yeah, I found that. good news is that seemed to fix the problem, but I still don't know what the root cause is... going to have to dig deeper into this one.
posidon42 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Bizarre connection issue? nick470 MEGAsquirt 1 09-30-2015 11:32 PM


Thread Tools

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:53 PM.