Code 98 Hard fault FMEM Mode?

PrplMonster · 08-24-2001, 05:37 PM

Ok, all i did was swap a 70MM to 65, set TPS to .986. Start her up, and check engine light is on, so i do a KOEO and KOER

KOEO:
85-can purge, none there
56- MAss air above max voltage
KOER:
98- Hard fault FMEM Mode...?

can anyone shed some light on this..? Again all i did was swap TB's thanx very much in advance@!@!!

.dave

.dave

jimberg · 08-25-2001, 09:55 AM

FMEM is Failure Mode Effects Management.

This means that since there is something wrong with your mass air meter the computer is going to just use look up tables based on other information. It's basically a limp home mode.

Try resetting your computer. If it is still a problem afterwards, I would suspect that your MAF sensor was the cause of the problem for which you changed the throttle body.

------------------
351W 89 Mustang GT Convertible

08-24-2001, 05:37 PM	#1
PrplMonster Registered Member Join Date: Mar 1999 Posts: 88	Code 98 Hard fault FMEM Mode? Ok, all i did was swap a 70MM to 65, set TPS to .986. Start her up, and check engine light is on, so i do a KOEO and KOER KOEO: 85-can purge, none there 56- MAss air above max voltage KOER: 98- Hard fault FMEM Mode...? can anyone shed some light on this..? Again all i did was swap TB's thanx very much in advance@!@!! .dave .dave

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Code 81?? Code 51. HELP!!	blk88lx	Windsor Power	0	03-31-2004 08:22 PM

08-25-2001, 09:55 AM	#2
jimberg Registered Member Join Date: Oct 1998 Location: Rogers, MN Posts: 2,089	FMEM is Failure Mode Effects Management. This means that since there is something wrong with your mass air meter the computer is going to just use look up tables based on other information. It's basically a limp home mode. Try resetting your computer. If it is still a problem afterwards, I would suspect that your MAF sensor was the cause of the problem for which you changed the throttle body. ------------------ 351W 89 Mustang GT Convertible