yo;for the 90 bronco, right?
If so;
If you mean; the fp keeps running after starting it or.. then da fuel pump relay is hanging up. Replace the fuel pump relay
84
KOER
Bad or unplugged EGR solenoid,
low speed fuel pump relay bad check FP relay for; corrosion (common problem)
Swap to Bosch Type & Color Codes in all pre-'92 EFI Bronco & F-series Source: by Steve83----------------
92
KOER
HEGO indicates right bank lean
HEGO is going bad[/b,
fuel pressure regulator is set too low,
or bad right bank injector (or ck FI connector(s) for corrosion or like mine once, disconnected @ injector)
Shift solenoid 2 circuit failure (E40D) ,, read below
98
KOER
This is the "limp-mode". operating in FMEM; (Failure Management and Effects Mode); but; maybe... that shift solenoid could be the issue here... didn't you post somethAng on that here? Read below..Limp Mode
Extensive problems are what normally trip this code. Additional codes will be present with this code.
Code 98-Electronic pressure control driver open in ECA (E40D)
Code 98-Hard fault present
Limp Mode; happens when the vehicle computer recognizes a problem in it's logic. When an expected signal value from a sensor is sent to the computer and is not within the computer's programmed specifications, "secondary" programs are activated by the computer to strive to protect the transmission from damage the improper sensor signal might cause to occur. In other words, the computer is always expecting certain signal values from certain sensors i.e. the temperature sensor, the speed sensor, the throttle position sensor, etc. As long as these signals are what it would normally expect for the conditions and is normal based on all the other signals it is receiving from other sensors, it acts normally and accordingly.
read more....
Source: by autotransinc.com
esp. "...
Due to the engineered voltage strategies of the solenoids, the transmission simply defaults to a single gear and line pressure defaults to high, all in order to "limp" you home... "