09-13-2016, 10:35 AM
(09-13-2016, 07:11 AM)fixkick Wrote:(09-13-2016, 06:35 AM)Agk007 Wrote: Also, just out of curiosity, which CEL codes trigger limp home mode? I would be ok with having a CEL on if it still runs fine.
easy,its in the book ,under, FAILSafe, (limp)
all these here and see the box, on the right is 96 to 98
http://www.fixkick.com/ECU/LimpHome/failsafe.html
MAF = P0102/103
IAT = P0112/113
ECT = P0117/118
TPS = P112/123
VSS1 = P0500 ( speedo vss) Vehicle Speed sensor = VSS
A/T
TR = P0705 (A/T Range shifter output in conflict)
VSS2 = P0720 ( 4sp Vss tail speed sensor dead)
SS#1 = P0753 (shift solenoid 1 bad)
SS#2 = P0758 (shift solenoid 2 bad)
TCC = P0743 (torque converter clutch malf)
So it looks like as long as the MAF, IAT, ECT, TPS, and VSS1 is functioning on the engine, it won't go into failsafe mode. My donor tracker has a 4 speed auto, but that will be disconnected and not used obviously. Since it is auto will it still go into failsafe since the transmission sensors are disconnected? I found a piggyback ecu that allows using the stock ECU in parallel and still have the protections in place for overboost and lean condition etc and the ability to control timing electronically. The reason i hope to be able to use the stock ecu is the IAC valve is stepper operated, and the ECU's im looking to use cant operate this and i feel like it could get extremely complicated to make the idle up functions work, as well as idle up for power steering and such. I'm ok with a CEL light as long as it runs fine (probably wont have it wired to a light anyways).