open loop and closed loop

demonicus · February 27th, 2009, 01:41 PM

Ok so I've got this motor... she looks really pretty.
visualize:
302 bored .020
GT40 intake
trickflow TW heads
23lb injectors
deep sump oil pan
BBK heads

now the car will fire up... run like a dream for 5 mins while in open loop.
As soon as the car warms up she goes into closed loop and starts blowin smoke, misfiring, hesitating etc...

now I have no idea what open loop and closed loop are but I'm wondering if ringwash is the issue then can I just throw a carb setup on it and be done with the whole ordeal?

grnstang · February 27th, 2009, 02:20 PM

im guessing a carb setup would help out big time

Trick Tuners · February 27th, 2009, 02:36 PM

Maybe the o2s are bad? Any header leaks?
Open and Closed loop Fueling and Fuel Trims - Trick Tuners Forums

89LX347 · February 27th, 2009, 04:26 PM

open loop and close looped have to do with your 02 sensors. putting a carb on anything doesnt solve problems like clorox. you need to see what the problem is right now. go get a tune, turn your fuel pressure down, do something. sounds like it just gets flooded or something. ive never heard of 23lb injectors and do you have one trick flow head and one BBK head?

superbean · February 27th, 2009, 05:26 PM

coolant temp sensor, o2 sensors

demonicus · February 28th, 2009, 11:31 AM

injectors say 23lb on the side of them... 3 big holes in them (disc type) and the only ones I've ever seen advertised that look like them are from trickflow.

I have trickflow heads with BBK headers.

I'm wondering if a compression test will tell me anything.

JBIGBOOTSY · February 28th, 2009, 11:46 AM

do you havematching maf for the inj.?

fateisajester · February 28th, 2009, 11:57 AM

Originally Posted by grnstang

im guessing a carb setup would help out big time

+1

i couldnt be happier since my carb swap

February 27th, 2009, 01:41 PM	#1
demonicus Regular 1988 mustang LX coupe Join Date: Jul 2007 Location: Maple Ridge, BC, Canada Posts: 137 iTrader: 0 reviews	open loop and closed loop Ok so I've got this motor... she looks really pretty. visualize: 302 bored .020 GT40 intake trickflow TW heads 23lb injectors deep sump oil pan BBK heads now the car will fire up... run like a dream for 5 mins while in open loop. As soon as the car warms up she goes into closed loop and starts blowin smoke, misfiring, hesitating etc... now I have no idea what open loop and closed loop are but I'm wondering if ringwash is the issue then can I just throw a carb setup on it and be done with the whole ordeal? __________________ 89GTcoupe- 304ci, tfs1cam, tftw heads, 2.5"flowies, GT40intake, TF23lb inj, t5 w CFDF, SN5bolt, 3.73gears, GTkit, Y2K R wing, 17" Tribars 88coupe- lookin for a new powerplant

February 27th, 2009, 02:20 PM	#2
grnstang Hardcore Enthusiast 91 LX 13.7@101 Join Date: Oct 2008 Location: Norwalk OH Posts: 1,426 iTrader: 1 reviews	im guessing a carb setup would help out big time __________________

February 27th, 2009, 02:36 PM	#3
Trick Tuners MM Fanatic KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 4,467 iTrader: 3 reviews	Maybe the o2s are bad? Any header leaks? Open and Closed loop Fueling and Fuel Trims - Trick Tuners Forums __________________ Check out my forums for stuff on troubleshooting, tuning, etc We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. Be friends with us on FB

February 27th, 2009, 04:26 PM	#4
89LX347 Hardcore Enthusiast Join Date: Apr 2007 Posts: 1,304 iTrader: 0 reviews	open loop and close looped have to do with your 02 sensors. putting a carb on anything doesnt solve problems like clorox. you need to see what the problem is right now. go get a tune, turn your fuel pressure down, do something. sounds like it just gets flooded or something. ive never heard of 23lb injectors and do you have one trick flow head and one BBK head? __________________ I believe in art when it is not seen. I believe in music when it is not audible. I believe in God when He is silent.

February 27th, 2009, 05:26 PM	#5
superbean Hardcore Enthusiast 1998 Cobra 13.24@105.66 Join Date: Aug 2008 Location: North Carolina Posts: 1,778 iTrader: 0 reviews	coolant temp sensor, o2 sensors __________________ weeee foooord!

February 28th, 2009, 11:31 AM	#6
demonicus Regular 1988 mustang LX coupe Join Date: Jul 2007 Location: Maple Ridge, BC, Canada Posts: 137 iTrader: 0 reviews	injectors say 23lb on the side of them... 3 big holes in them (disc type) and the only ones I've ever seen advertised that look like them are from trickflow. I have trickflow heads with BBK headers. I'm wondering if a compression test will tell me anything. __________________ 89GTcoupe- 304ci, tfs1cam, tftw heads, 2.5"flowies, GT40intake, TF23lb inj, t5 w CFDF, SN5bolt, 3.73gears, GTkit, Y2K R wing, 17" Tribars 88coupe- lookin for a new powerplant

February 28th, 2009, 11:46 AM	#7
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	do you havematching maf for the inj.? __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

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