A/F problems

veedubin

Official SM Decals
Ok.........before you all try to hang me.. i got this as a monitor not ot une with.
I purchased a Faze A/F gauge yesterday, and put it in. I used the white signal wire to the ECU for the gauge and obvious power and grounds. Not I notice at idle the thing is so lean that the gauge won't even read it. Yet under full boost ( 10 -12psi ) it's richer then hell. so i'm stumped. any ideas??? also what year TT MKIV fuel pump works with the MKIII?? I have many dealer accounts and can get these fairly cheap... so i want to do taht instead of a walbro
 

starscream5000

Senior VIP Member
Aug 23, 2006
6,359
0
36
Hot and Humid, KY
I checked your profile for mods, but you don't have any listed, so I'm assuming you're stock. The car from the factory runs pretty rich at WOT, so that should be normal. Idling also has a lean A/F to it, but I'm not sure how lean a stock car is. The "monitor" is only going to be a light show as it's only seeing what the o2 sensor sees, and that's a very narrow spectrum, something like, rich, somewhat rich, stoich, somewhat lean, and lean ;).
 

veedubin

Official SM Decals
starscream5000 said:
I checked your profile for mods, but you don't have any listed, so I'm assuming you're stock. The car from the factory runs pretty rich at WOT, so that should be normal. Idling also has a lean A/F to it, but I'm not sure how lean a stock car is. The "monitor" is only going to be a light show as it's only seeing what the o2 sensor sees, and that's a very narrow spectrum, something like, rich, somewhat rich, stoich, somewhat lean, and lean ;).

I wasn't even aware that i could list mods in the profile.... but i do now :icon_bigg Mods are: 3" cat back Intake shimmed gate to 9psi

Also I am well aware that the stock 02 is a narrow band, but were is a place to get a cheap wideband??? I know cheap and wideband.... oxymoron:biglaugh:
 

Dunckel

Active Member
Jan 16, 2007
2,949
0
36
43
Spokane, WA
try not to do cheap on anything for the supra. but i know what you mean. check out the vendors section. good stuff, good prices and backed by the community.

you must have the only supra in ephrata, i've been there, birds fall out of the sky cause there is nothin to land on. it may have changed, i haven't been through there in a while.
 

veedubin

Official SM Decals
Dunckel said:
try not to do cheap on anything for the supra. but i know what you mean. check out the vendors section. good stuff, good prices and backed by the community.

you must have the only supra in ephrata, i've been there, birds fall out of the sky cause there is nothin to land on. it may have changed, i haven't been through there in a while.

LMAO...... I am the only Driving one around. I work in lancster, and ther are a few (like 2 inlcluding mine ) As for ephrata, i have found a total of 6 w/o mine. all of wich are in various states of decay.... Hell one guy wants to sell his 87 turbo 5spd with 180XXX and a "4 corner hit" style accident for $1100 !!!!

the others i can't get ahold of the owners, I need parts bad.

As far as going cheap on the supra.. NEVER! i know what these cars are, and i know how rare they are getting at least around here. I just bought the A/f guage for a monitor and was hoping it was going to be a correct indication of what is going on in the cylinder walls. If you are ever going to be around here again, hit me up... i need supra friends :1zhelp: