Boosted Foxbody...running Rich...unhooked Maf...no Change In Engine Fuction?

[killer5.0]

okay so i had the car up to operating temp today so i could run KOER test....idles clean, but the car runs pig rich and bogs down dips into mid 9s on my wideband WOT and excessive popping on decel etc....decided to unhook the MAF (BA2400) to see if that might be the culprit. no change whatsoever to idle/engine smoothness etc with it unplugged....i didnt drive it like that just idle... how to i determine if its the harness or the sensor? could it just be dirty?

thanks

 

[killer5.0]

Key on 12v across red/blk wires...(a/b)

Engine running voltage across wires c/d
1.0 volts at idle
1.3-5 volts 2000-2500rpm
1.5-1.7 volts 3000rpm

Had my wife running the rpms while i checked voltage so had a little fluctuation in rpm values lol

 

[RaggedGT]

What are you using for engine management?
I have limited experience with the issues you are having,but I can point you in the direction of a guy that maybe able to help- https://www.stangnet.com/mustang-forums/threads/steves-megasquirt-tunerstudio-help-thread.888730/

 

[vristang]

What KOEO/KOER codes came up?
Disconnecting the MAF is not a reliable way to diagnose anything...

Your voltage readings look to be in the ball park though...
http://broncozone.com/uploads/monthly_08_2012/post-3816-0-72843700-1346072584.gif

 

[killer5.0]

SCT 4 bank chip...

Originally i had codes

Koeo 15,67,85
Cm 11
Koer 21
Cyl balance 9

Removed chip...and depressed clutch (which i didnt the first time)

Koeo 31, 81, 82, 85, 84
Cm 11
Koer 21
Cyl bal 9

Brought car to operating temp...chip installed...clutch depressed

Koeo 15,85
Cm 11
Koer 11
Cyl bal 9

So i believe chip is causing 15...i have no purge canister which i believe causes 85...all the codes with chip removed are smog related (egr etc) that my chip turns off...

 

[Mustang5L5]

Code 15 is due to chip.

With MAF unplugged, do you get a code?

 

[killer5.0]

hmm i didnt try that...ill try that and report back