Search



Go Back   MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang > SVT Forums
Sign in using an external account
Register Forgot Password?
Search

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-20-2010, 05:41 PM   #1
SVTeeshirt
5th Gear Member
 
Join Date: Nov 2007
Vehicle: 1996 Mustang Cobra
Location: Maryland
Posts: 4,950
Default How to: Clean IMRCs (part-1)

Well my car was throwing a IMRC code, So i tore down the car, got to the IMRC and the IMRC's control, Took a lot of pics so here we go. This is on a 96 cobra, 96-98 should be the same with the exception that the 98s have a different material IMRC and do not tend to gum up as much.

Motor!:
Click the image to open in full size.

remove strutt tower brace and air intake

Click the image to open in full size.


Click the image to open in full size.

Damn they didn't show up at all, i'll try to take another pic indoors.

Pretty easy 8 bolts total on the STB 3 on each side 2 up top.
I just took a screwdriver to the clamp at the TB loosened the air tube up there, unplugged the MAF and sensor above it, took the bolt out of the sidewall near the airbox (8mm) and wiggled it out. The airbox is snapped to a holder under the air filter, just wiggle it out.


Next, drain coolant, drivers side under the radiator, pretty self explanitory.
Click the image to open in full size.

Next, unplug all clips and hoses to the Upper intake manifold, this is from drivers side, Also there is a metal hose that needs to be loosened using a wrench, its the brass/copper color seen.

Click the image to open in full size.

little clearer there, make sure everything is unplugged.

Click the image to open in full size.
and there ^ it is undone, the metal line just pulls out. I used an Adjustable Wrench.

I always number my sparkplug wires so i don't forget what is what,
used 3m tape and a sharpie.
Click the image to open in full size.

again there are several clips and hoses to each side of the intake manifold, some just require some elbow grease to get out.
Click the image to open in full size.

Other side! remove everything that looks like it comes off, including this bracket holding the throttle cable, 2 screws.. i also took off the spring to the throttle cable.

Click the image to open in full size.

And gone!
Click the image to open in full size.

Remove all bolts around upper intake and take it off!
Inside of the upper intake.
Click the image to open in full size.

Snake like lower intake.
Remove the bracket on the alternator holding the coolant crossover tube(Black rusty tube around the alternator going under the intakemanifold.)
Click the image to open in full size.

Getting the coolant crossover tube out! This takes some "delicate muscle" becareful not to break it but you will have to pry it wasn't easy getting out, the cardboard is not not scratch anything, there is a coolant temp sensor to remove, make sure all bolts and brackets are clear, there is nothing holding the tube itself in the head except pressure.(The bracket on/near the alternator holds it down so be sure to take all of those bolts off)
Click the image to open in full size.

The lowerintake was a painto take off, there are two bolts inside the intake walls (10mm)
and several outerbolts, IIRC it was 13MM deep socket for 2 and 8mm socket for the other (on each side) However there is also 2 bolts at the very back of the intake, which is a PITA to get to, you really need someone else holding hoses back with a screwdriver.

The IMRC control is this box seen at the bottom of the lower intake, it is attached to the IMRCs by throttle style cables and springs, just like the throttlebody.

I used pliers to take these off, i didn't get a pic because i was into it.
Click the image to open in full size.

If i were to do it again i'd take off the fuel rails, o-rings for injectors are only $2 for 8 so thats like $8 total(2 per injector top and bottom)

Here are my IMRC with the control. The control was held onto the intake with 3 bolts though there are more than 3, just look and see which 3 hold it, its fairly easy to see.

IMRCs pretty gummed up.

Click the image to open in full size.


Click the image to open in full size.

IMRCS with the controller.Click the image to open in full size.

Cleaning time!

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
Click the image to open in full size.

pretty self explanitory, get the gunk out, i used a small screwdriver (lightly) 2 toothbrushes and a lot of brake cleaner.

Click the image to open in full size.
Def better

Click the image to open in full size.

Click the image to open in full size.
Cleaned up the head where the IMRC's/intake goes as well.

Click the image to open in full size.
Next we put the control back on the intake, the 3 bolts you removed, put em back.

Click the image to open in full size.

I got new gaskets, ran me $75 for the whole deal IMRCs to heads/lowerintake to IMRCs and Plenum (upper intake ) to lower intake.

Click the image to open in full size.

Click the image to open in full size.
I threw one small bolt in the middle so i could keep the gasket and IMRC lined up then just throw them in at once.

Click the image to open in full size.

again same deal

Please dont rain!

Click the image to open in full size.

lol
Click the image to open in full size.
clear pic of gasket on lower before IMRC went on.
When putting the lower on, as a help to which side they go obviously see if they line up on the head with the fuel injector holes facing up (the flat surface should be down and a little taper/drop off should be up.)

I didn't really get a good picture of the reconnecting of the wires but its pretty self explanitory, now when you put the lower intake in this...
Click the image to open in full size.

connects to..
Click the image to open in full size.
that port on the IMRC control.

I slid the intake in first, then lifted the front up and stuck my hand back there and connected em.
Click the image to open in full size.

Intake back in!

next, these bolts

Click the image to open in full size.

go to the 4 middle sections around the intake, just incase you don't remember where you took em off at.

Don't overtighten because there is a sequence and torque specs. At this point i just made sure everything lined up and put them in, didn't tighten at all.


As far as torque specs go, the larger bolts are 15-22ft/lbs + 90 degrees, the small bolts are 76-102 inch/lbs

Click the image to open in full size.

hopefully that shows up, if not consult the internet or a repair manual.

Click the image to open in full size.

Click the image to open in full size.

Injectors!
Click the image to open in full size.

yeah my injectors looked rough some tips looked cracked and some uneven, today i ordered a new set.
Click the image to open in full size.

the bracket over the Alt back on. Yes i broke EGR hoses, i already bought replacements.

I will continue this as soon as my injectors get here AM usually ships fast so hopefully in the next few days.

here is a pic of my dogs to keep you entertained in the meantime.
Click the image to open in full size.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
I bought a goldfish, named it after my ex-girlfriend, and let it die. It's really the little things in life.



Police in dallas are giving local drivers cowboys tickets instead of speeding tickets



Ditching the 4.6 but keeping 4 cams.

Last edited by SVTeeshirt; 05-24-2010 at 01:41 PM.
SVTeeshirt is offline   Reply With Quote
Old 05-20-2010, 09:44 PM   #2
JC316
4th Gear Member
 
JC316's Avatar
 
Join Date: May 2009
Vehicle: 1997 Cobra
Location: DFW, TX
Posts: 1,878
Default

Nice writeup so far. It's easier to just seafoam it, but yours look pretty gummed up.
__________________
1998 Formula Firebird M6.
Guide to installing a Mark VIII engine in a 96+GT
JC316 is offline   Reply With Quote
Old 05-20-2010, 10:01 PM   #3
SVTeeshirt
5th Gear Member
 
Join Date: Nov 2007
Vehicle: 1996 Mustang Cobra
Location: Maryland
Posts: 4,950
Default

Quote:
Originally Posted by JC316 View Post
Nice writeup so far. It's easier to just seafoam it, but yours look pretty gummed up.
seafoam the IMRCs? Where would you put the seafoam in? I don't think it would have done a whole lot to mine without wiping theres a lot of carbon deposits.

Also, i may not even put my intake back on lol I have 01 heads/cam/intake i might throw in instead lol.
__________________
I bought a goldfish, named it after my ex-girlfriend, and let it die. It's really the little things in life.



Police in dallas are giving local drivers cowboys tickets instead of speeding tickets



Ditching the 4.6 but keeping 4 cams.
SVTeeshirt is offline   Reply With Quote
Old 05-21-2010, 01:56 AM   #4
my94pony
4th Gear Member

 
my94pony's Avatar
 
Join Date: Feb 2008
Vehicle: 96 Cobra, 85 GT, 94 V6
Location: Long Island, New York
Posts: 1,857
Send a message via AIM to my94pony
Default

nice write up so far pics are very helpful!
oh and seafoam would do nothing for imrcs that bad
__________________

1996 Cobra #2759 of 7496 287rwhp/278rwtq - 3:73-Pro 5.0-Mac Exhaust-JLT CAI-Steeda Pulleys-KB SFC-FRPP Alum DS-Koni Yellow Shock/Strut-KYB Adj Quads-Steeda Springs-FR500 SW-HIDS
1994 V6 - Split Port Swap, 3:73/T Lock-Tri-Ax-True Duels/Flows-Eibach Springs-CAI-UDP-Chrome Cobras/Nittos, SOLD
1985 GT - H/C/I-3:73-Fresh Paint
1998 Explorer Sport
my94pony is offline   Reply With Quote
Old 05-21-2010, 12:07 PM   #5
SVTeeshirt
5th Gear Member
 
Join Date: Nov 2007
Vehicle: 1996 Mustang Cobra
Location: Maryland
Posts: 4,950
Default

IMRCs are going back in, i'll finish this up over the weekend, waiting on a few odds and ends.
__________________
I bought a goldfish, named it after my ex-girlfriend, and let it die. It's really the little things in life.



Police in dallas are giving local drivers cowboys tickets instead of speeding tickets



Ditching the 4.6 but keeping 4 cams.
SVTeeshirt is offline   Reply With Quote
Old 05-21-2010, 12:29 PM   #6
945LSTANG
6th Gear Member
 
945LSTANG's Avatar
 
Join Date: May 2007
Vehicle: 2003 SVT Cobra
Location: Columbia, MO
Posts: 6,347
Default

wow...great write-up man!!
__________________

03 Cobra
94 GT - R.I.P. 11/30/08

945LSTANG is offline   Reply With Quote
Old 05-21-2010, 01:04 PM   #7
99 GT vert
5th Gear Member

 
99 GT vert's Avatar
 
Join Date: Sep 2006
Vehicle: 1999, Ford, Mustang
Location: Northwest Ohio (Fort Wayne Area)
Posts: 4,760
Send a message via AIM to 99 GT vert
Default

Great write up Kirk

Why not just put the 01 h/c/I on it
__________________


99 GT convertable- Laser Red- sold

03 TT Cobra coupe- Sonic Blue

99 GT vert is offline   Reply With Quote
Old 05-21-2010, 05:52 PM   #8
SVTeeshirt
5th Gear Member
 
Join Date: Nov 2007
Vehicle: 1996 Mustang Cobra
Location: Maryland
Posts: 4,950
Default

Quote:
Originally Posted by 99 GT vert View Post
Great write up Kirk

Why not just put the 01 h/c/I on it
talked myself out of it, there is still a good bit of work to go that far and my bottom end has 158k and change, who knows how long it'll be before im back in there.

Hopefully i'll have enough time to do some appearence inside and out before she goes also a built rear/tranny.

4.30s are going in the week i get tags.

Cleaned the IMRCs today, took FOREVER lol they were baaaad. I took some pics will put them up when i continue this write-up.
__________________
I bought a goldfish, named it after my ex-girlfriend, and let it die. It's really the little things in life.



Police in dallas are giving local drivers cowboys tickets instead of speeding tickets



Ditching the 4.6 but keeping 4 cams.
SVTeeshirt is offline   Reply With Quote
Old 05-22-2010, 09:42 PM   #9
Stang9946
4th Gear Member

 
Stang9946's Avatar
 
Join Date: May 2005
Vehicle: 2005 Mazda 6S
Location: New York
Posts: 1,648
Default

How many miles are on the car?
__________________
1997 Mustang SVT Cobra
triple black, modded

*SOLD*
Stang9946 is offline   Reply With Quote
Old 05-23-2010, 12:55 PM   #10
SVTeeshirt
5th Gear Member
 
Join Date: Nov 2007
Vehicle: 1996 Mustang Cobra
Location: Maryland
Posts: 4,950
Default

Quote:
Originally Posted by Stang9946 View Post
How many miles are on the car?
158k By the look of the IMRCs i don't think the owner used premium gas, the exhaust valves ARE FILTHY. I got some seafoam im putting in the crankcase, i'll probably keep seafoaming it for the next few oil changes. She's def a diamond in the rough but im willing to put in the work to bring it back to its former glory.
__________________
I bought a goldfish, named it after my ex-girlfriend, and let it die. It's really the little things in life.



Police in dallas are giving local drivers cowboys tickets instead of speeding tickets



Ditching the 4.6 but keeping 4 cams.
SVTeeshirt is offline   Reply With Quote
Old 05-23-2010, 12:55 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
0104, 10mm, 96, 98, bolts, cam, clean, cleaning, cobra, gasket, gaskets, imrc, imrcs, lower, seafoam, write

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 08:48 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup