Vacuum Lines Question

jeremyalms · April 25th, 2011, 05:02 PM

I have a 91 5.0 that has some screwy vacuum line manipulation.... Can you guys help me here? Can I just cut these off? remove the 2 sensors they are attached to?

velasco98 · April 25th, 2011, 05:10 PM

Those are for your emissions stuff. If you don't have the emissions you could take them off

fogged306 · April 25th, 2011, 05:11 PM

Those probably go over to the thermacitor solenoids and the evap canister. Really no need for them to be plugged like that if they're the ones I'm thinking of because they're not hooked up to manifold vacuum anymore. The ends where the screws went should be the ones headed to the manifold, or at least that's the way it looks in the pictures. Can you take a pic of where the lines are going to? I do believe one goes to your vacuum reservoir tho, which is in the passenger fender.

Here is a link to what your vac system should be like.

jeremyalms · April 25th, 2011, 05:28 PM

here are more pics. Also, I just bought this car and trying to figure out what all it has, maybe the pics can help.... i know it has bbk full length, e303 cam, supposedly cobra upper and lower, cant tell on the TB and mass air meter... no part numbers.... What is the Jeg's plate for?

Where the vacuum lines go...

Other pics...

ryanw · April 25th, 2011, 05:48 PM

one of those lines goes to your EGR valve right behind your throttle body and the other two go to these valves that are hooked up on the hoses that lead to your smog pump. and the 4th one i don't believe is used

fogged306 · April 25th, 2011, 05:49 PM

Are they the colored lines? If so, hows your heater controls work? lol

jeremyalms · April 25th, 2011, 05:53 PM

Heat blows hot as hell!

fogged306 · April 25th, 2011, 06:04 PM

Yea, but does it switch from defrost to floor to vent, ect.. because that is what the different colored lines do.

http://www.veryuseful.com/mustang/te...m_controls.gif

jeremyalms · April 25th, 2011, 06:07 PM

Yes, it will switch from floor to vent to defrost....

fogged306 · April 25th, 2011, 06:50 PM

well then either I'm looking at the wrong plug in the picture or someone has re-run your lines and left that dead.

ryanw · April 25th, 2011, 06:54 PM

Originally Posted by ryanw

one of those lines goes to your EGR valve right behind your throttle body and the other two go to these valves that are hooked up on the hoses that lead to your smog pump. and the 4th one i don't believe is used

Again...Lol...^^^^ this is where they go

jeremyalms · April 25th, 2011, 07:02 PM

Thanks, I am just lost on this thing... It is hard to tell what HAS or HASN'T been done... It appears that the EGR has been plated off, see the pic with the JEGS plate. Kid said it has an E303 cam... I mean it lopes and all, but the throttle is a bit below 1000... Car runs super strong, but why put a E303 without changing the TB or Mass Air? Or maybe it has been changed... Who the hell knows?? Another thing he said, it has MSD ignition... all I see is a stock Motorsport distributor with a red MSD cap...

I don't really care what this thing has or doesn't... (I only paid 1800 bucks for it, rust free, interior perfect and the bolt-ons I can find so far add up to about 1200...) I just want to know where to go next with it, what to add and so on...

ryanw · April 25th, 2011, 07:06 PM

check out this picture on ebay..look at the two valves each one gets one of those vacuum lines 87-93 mustang 5.0 smog pump and parts oem gt lx cobra | eBay

jeremyalms · April 25th, 2011, 07:09 PM

Yeah, nothing is hooked up to it on this hack-job.....

ryanw · April 25th, 2011, 07:16 PM

and this is the EGR valve that you don't have....and if you look at the top of it you will see a little stem.... and one vacuum line goes there. Tomco 10605 EGR Valve New | eBay

but i was wrong about one thing.....there are 5 vacuum ports and only 4 of them are being used.....so the only one i haven't mentioned is the one the runs under your intake

jeremyalms · April 25th, 2011, 07:21 PM

So I would venture to say this isn't needed then...

There is no vacuum line from this harness on the passenger shock tower running to the intake... They run to what appear to be 2 solenoids monted to the shock tower...

So I guess a logical start would be to get the AC and smog eliminator kits... and add some under drive pulleys....

fogged306 · April 25th, 2011, 07:24 PM

Those two solenoids are for emissions. Without the smog pump and the EGR, they're useless. someone has been in there and done some hacking anyway because those lines that run to them should be black lines. If there's no line from them that runs to the intake, rip them out. If there is, then pull it off and cap it off.

ryanw · April 25th, 2011, 07:26 PM

bro I'm not sure, but this is just the reason why i don't hack my shit up cuz i know if the day ever comes when my mustang has to go ( and it never will, maybe when i die) that the new owner wont have to go through what you are right now...lol

ryanw · April 25th, 2011, 07:35 PM

this is what all those vacuum lines that are cut way short should look like , this is off my car

jeremyalms · April 25th, 2011, 07:38 PM

The solenoids attached to the shock tower...

So remove these if it has the EGR delet and nothing hooked up to the intake or Smog pump?

April 25th, 2011, 05:02 PM	#1
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	Vacuum Lines Question I have a 91 5.0 that has some screwy vacuum line manipulation.... Can you guys help me here? Can I just cut these off? remove the 2 sensors they are attached to?

April 25th, 2011, 05:48 PM	#5
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	one of those lines goes to your EGR valve right behind your throttle body and the other two go to these valves that are hooked up on the hoses that lead to your smog pump. and the 4th one i don't believe is used __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

April 25th, 2011, 07:06 PM	#13
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	check out this picture on ebay..look at the two valves each one gets one of those vacuum lines 87-93 mustang 5.0 smog pump and parts oem gt lx cobra \| eBay __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

April 25th, 2011, 07:16 PM	#15
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	and this is the EGR valve that you don't have....and if you look at the top of it you will see a little stem.... and one vacuum line goes there. Tomco 10605 EGR Valve New \| eBay but i was wrong about one thing.....there are 5 vacuum ports and only 4 of them are being used.....so the only one i haven't mentioned is the one the runs under your intake __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

April 25th, 2011, 07:26 PM	#18
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	bro I'm not sure, but this is just the reason why i don't hack my shit up cuz i know if the day ever comes when my mustang has to go ( and it never will, maybe when i die) that the new owner wont have to go through what you are right now...lol __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

April 25th, 2011, 05:10 PM	#2
velasco98 Regular 93 Mustang Gt Join Date: Jan 2011 Location: Gilroy CA Posts: 53 iTrader: 0 reviews	Those are for your emissions stuff. If you don't have the emissions you could take them off

April 25th, 2011, 05:11 PM	#3
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Those probably go over to the thermacitor solenoids and the evap canister. Really no need for them to be plugged like that if they're the ones I'm thinking of because they're not hooked up to manifold vacuum anymore. The ends where the screws went should be the ones headed to the manifold, or at least that's the way it looks in the pictures. Can you take a pic of where the lines are going to? I do believe one goes to your vacuum reservoir tho, which is in the passenger fender. Here is a link to what your vac system should be like.

April 25th, 2011, 05:28 PM	#4
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	here are more pics. Also, I just bought this car and trying to figure out what all it has, maybe the pics can help.... i know it has bbk full length, e303 cam, supposedly cobra upper and lower, cant tell on the TB and mass air meter... no part numbers.... What is the Jeg's plate for? Where the vacuum lines go... Other pics...

April 25th, 2011, 05:49 PM	#6
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Are they the colored lines? If so, hows your heater controls work? lol

April 25th, 2011, 05:53 PM	#7
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	Heat blows hot as hell!

April 25th, 2011, 06:04 PM	#8
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Yea, but does it switch from defrost to floor to vent, ect.. because that is what the different colored lines do. http://www.veryuseful.com/mustang/te...m_controls.gif

April 25th, 2011, 06:07 PM	#9
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	Yes, it will switch from floor to vent to defrost....

April 25th, 2011, 06:50 PM	#10
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	well then either I'm looking at the wrong plug in the picture or someone has re-run your lines and left that dead.

April 25th, 2011, 07:02 PM	#12
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	Thanks, I am just lost on this thing... It is hard to tell what HAS or HASN'T been done... It appears that the EGR has been plated off, see the pic with the JEGS plate. Kid said it has an E303 cam... I mean it lopes and all, but the throttle is a bit below 1000... Car runs super strong, but why put a E303 without changing the TB or Mass Air? Or maybe it has been changed... Who the hell knows?? Another thing he said, it has MSD ignition... all I see is a stock Motorsport distributor with a red MSD cap... I don't really care what this thing has or doesn't... (I only paid 1800 bucks for it, rust free, interior perfect and the bolt-ons I can find so far add up to about 1200...) I just want to know where to go next with it, what to add and so on...

April 25th, 2011, 07:09 PM	#14
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	Yeah, nothing is hooked up to it on this hack-job.....

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

April 25th, 2011, 07:21 PM	#16
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	So I would venture to say this isn't needed then... There is no vacuum line from this harness on the passenger shock tower running to the intake... They run to what appear to be 2 solenoids monted to the shock tower... So I guess a logical start would be to get the AC and smog eliminator kits... and add some under drive pulleys....

April 25th, 2011, 07:24 PM	#17
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Those two solenoids are for emissions. Without the smog pump and the EGR, they're useless. someone has been in there and done some hacking anyway because those lines that run to them should be black lines. If there's no line from them that runs to the intake, rip them out. If there is, then pull it off and cap it off.

April 25th, 2011, 07:35 PM	#19
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	this is what all those vacuum lines that are cut way short should look like , this is off my car __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

April 25th, 2011, 07:38 PM	#20
jeremyalms Newbie 1991 LX Join Date: Apr 2011 Location: St. Louis, MO Posts: 21 iTrader: 0 reviews	The solenoids attached to the shock tower... So remove these if it has the EGR delet and nothing hooked up to the intake or Smog pump?

Threads Similar to: Vacuum Lines Question
Thread	Thread Starter	Forum	Replies	Last Post
NEED HELP-Vacuum Lines	67svtstang	99-04	7	July 27th, 2010 07:38 PM
Vacuum lines	sniperd	5.0 Mustangs	11	May 26th, 2009 02:54 PM
vacuum lines ???	worlz08	5.0 Mustangs	1	October 7th, 2008 11:07 PM
vacuum lines	terribleonexx88	5.0 Mustangs	2	October 19th, 2006 02:18 PM
vacuum lines	88stang	5.0 Mustangs	11	April 4th, 2006 04:16 PM

All times are GMT -4. The time now is 04:39 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.