10.0 Air/Fuel ratio/ car bogs while trying to accelerate

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Dec 27, 2018 | 03:56 PM

Ironhide

Thread Starter

CMOC Rookie

Joined: Oct 2018

Posts: 38

From: Vancouver

10.0 Air/Fuel ratio/ car bogs while trying to accelerate

My ratios are everywhere. The other day it was fine. 14.3 - 15.5. Yesterday as I was cruising it was at a steady 10.0 the whole time. I was stalling at red lights trying to get the car home. While coming home I accelerated from first to second and the car lost throttle power or like it just bogged down, then everything was normal again. What is causing this issue? Bad fuel supply? Bad maf? Both? Tuned for 94 octane. I only use 94. Thanks for the help ladies and gents. 2003 supercharged mustang Gt.

Dec 31, 2018 | 08:58 PM

Macgyver 4404

CMOC Newbie

Joined: Oct 2018

Posts: 23

From: Nobel, Ontario

10.0 is pretty fat. You are getting plenty of fuel, is your pressure regulated? Try cleaning your MAF (carefully) Could be the fuel map is degraded, might need a re-flash. Good luck.

Jan 2, 2019 | 08:29 AM

Ironhide

Thread Starter

CMOC Rookie

Joined: Oct 2018

Posts: 38

From: Vancouver

Thanks for the info, macgyver. Pressure is regulated and fine. The car idles rough and stalls now. It’s just so strange that it works some days and the others it’s hard to drive.