butterfly issues

[sho_stopper513]

hi i have a 93 mtx and i jus did a motor swap from a 91. when i go to start the car it takes a min for it to start it jus cranks and cranks then starts, but i noticed when it start the butterflies dont close at start and of course dont open at 4000 rpm and when i give it gas its kinda boggs a little. i took the intake manifold off and replace the gaskets so i don think its leaking i checked all of the vacuum lines an they all look good but now im stumped. if anyone has any advice i would greatly appreciate it thanks

 

[jayro]

Check to make sure all the vac lines for your butterfies are hooked up. If they are not the butterfies stay open all the time. They should run from the butterfies to a t and then to the back side of the intake. On the back side there is a canister ect that they attach to then to the intake.

 

[SuperHO]

stupid question...is the IRCM (Intake Runner Control Module) plugged in? if so, start checking vacuum lines, and make sure the runners themselves move freely by hand.

 

[K-Dawg]

stupid question...is the IRCM (Intake Runner Control Module) plugged in?

IMRC = Intake Manifold Runner Control (on the back of the manifold)

IRCM = Integrated Relay Control Module (on 89-90 SHOs, later called CCRM)

I think that's right. I always get it mixed up, too.

 

[sho_stopper513]

the vac lines for my butterfies are hooked up. the ircm is plugged in also and the butterflies move freely by hand

 

[kevinspann]

What color are the wires that you have plugged into the IMRC? They should be green and red
If not, you have the wrong plug in it.

 

[sho_stopper513]

the wires are yellow with white stripe and black. is there another connector end similiar that i may have plugged in the wrong connectors.

 

[kevinspann]

Yes, that's your issue. Unplug that plug, or you'll fry the computer. Find the one with red and green wires....

One of the odd times Ford used the exact same plug in the same area.

 

[sho_stopper513]

thank man i found it an plugged it in an the car starts right up no hesitation before it would jus crank for a min an idle at 2000 rpms but seems to be idleing fine now. tomorro ill take it old an see if the butterflies open an close i cant really rev it up right now cuz my neighbors are ****** lol an the car is a little loud the flared end of my exhaust resonator where it bolts to the ypipe rusted out. do u kno where i can find a new resonator at.

 

[SuperHO]

methinks you got the pigtails for your secondaries and IAC mixed up...

 

[AREA 91]

If you mixed up those plugs and had the key on, you just fried the secondary circuit in the computer. You will need a new one.

 

[sho_stopper513]

i started up the car after i put the right connectors in there place. the butterflies still don open or close and the car boggs real bad about 2500 rpm. so u think i will need a new computer? them two connectors being in the same place an the same connectors have to be the most crappiest ford design i have have seen.

 

[sho_stopper513]

does anyone have any advice to why i have that bog at 2500 rpm? is it because my butterflies are not closing?

 

[K-Dawg]

them two connectors being in the same place an the same connectors have to be the most crappiest ford design i have have seen.

The MAF and coil pack connectors on the earlier cars are the same way.

 

[SHOspazz92]

does anyone have any advice to why i have that bog at 2500 rpm? is it because my butterflies are not closing?

No, your car will run perfectly fine if your butterflies are stuck open.

-Sam

 

[sho_stopper513]

If you mixed up those plugs and had the key on, you just fried the secondary circuit in the computer. You will need a new one.

how sure are u that the secondary circuit would burn out as soon as i turn the key on with those two plugs flipped around . because i took the cover off my computer an the computer looks fine.

 

[kevinspann]

Because he's worked on plenty of them....and done it before.

 

[sho_stopper513]

ok cool....just dont want to spend money on a new part if that isnt the promblem been there done that alot lol..but i will try it an hopefully it works...will post if it doesnt work.

 

[shonuffmine]

Kevin did you burn yours up too,or did you catch the faux paus before you turned the key on?

 

[kevinspann]

Kevin did you burn yours up too,or did you catch the faux paus before you turned the key on?

Nah, mine was just unplugged.