a/f gauge acting weird. I think?

WADS56 · 09-27-2001, 12:03 AM

I just got it installed and tested it out today. The gauge dosn't bounce around like people said they would. It has a stable reading all the time (idle, part throtal, wot). It's working because the gauge will change readings when I accelerate, and coast.

Why do I have a feeling that my car never go's into open loop and takes readings from the 02's to correct the a/f raito. I have a custom chip burned for my setup, would this have anything to do with it?

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79 hatch w/ NA 347,stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288
93lx all stock + tremec

PKRWUD · 09-27-2001, 06:21 AM

What does the gauge read when you first start it up (cold)? When idling (warm)? At half throttle (warm)? At full throttle (warm)?

Take care
~Chris

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WADS56 · 09-27-2001, 06:47 AM

On start up it says it's lean, and will slowley climb up to stoitch as the engine warms up. When it is warm and idling it reads stoitch. At part throtal when warm it will stay stoich, but when there is a load on the motor it will move around a little but never go rich or lean. At wot it will move close to rich, but never get in the red (rich). When doing enging breaking it will go a little lean.

I have a custom chip burned for a blower combo, that would explain why it almost go's rich as the rpm's climb at wot. The car runs good no bucking or surging so it seems to be working corectly.

WADS56 · 09-28-2001, 02:51 AM

PKRWUD · 09-28-2001, 08:35 AM

Sounds like it's not going into closed loop.

Take care
~Chris

------------------
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MustangNet

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joe4speed · 09-29-2001, 01:39 AM

Quote:

Originally posted by WADS56:
On start up it says it's lean, and will slowley climb up to stoitch as the engine warms up. When it is warm and idling it reads stoitch. At part throtal when warm it will stay stoich, but when there is a load on the motor it will move around a little but never go rich or lean. At wot it will move close to rich, but never get in the red (rich). When doing enging breaking it will go a little lean.

I have a custom chip burned for a blower combo, that would explain why it almost go's rich as the rpm's climb at wot. The car runs good no bucking or surging so it seems to be working corectly.

What's a stoich?

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PKRWUD · 09-29-2001, 04:30 AM

Probably stoichiometric.

Take care
~Chris

------------------
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MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

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09-27-2001, 12:03 AM	#1
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	a/f gauge acting weird. I think? I just got it installed and tested it out today. The gauge dosn't bounce around like people said they would. It has a stable reading all the time (idle, part throtal, wot). It's working because the gauge will change readings when I accelerate, and coast. Why do I have a feeling that my car never go's into open loop and takes readings from the 02's to correct the a/f raito. I have a custom chip burned for my setup, would this have anything to do with it? ------------------ 79 hatch w/ NA 347,stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288 93lx all stock + tremec

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09-27-2001, 06:21 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	What does the gauge read when you first start it up (cold)? When idling (warm)? At half throttle (warm)? At full throttle (warm)? Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-27-2001, 06:47 AM	#3
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	On start up it says it's lean, and will slowley climb up to stoitch as the engine warms up. When it is warm and idling it reads stoitch. At part throtal when warm it will stay stoich, but when there is a load on the motor it will move around a little but never go rich or lean. At wot it will move close to rich, but never get in the red (rich). When doing enging breaking it will go a little lean. I have a custom chip burned for a blower combo, that would explain why it almost go's rich as the rpm's climb at wot. The car runs good no bucking or surging so it seems to be working corectly.

09-28-2001, 02:51 AM	#4
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	?

09-28-2001, 08:35 AM	#5
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Sounds like it's not going into closed loop. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-29-2001, 04:30 AM	#7
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Probably stoichiometric. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!