motor stumbles after it warms up

[fixkick]

[quote='Terebit' pid='7204' dateline='1477502920']
...engine stumble and infrequent backfire (to tail pipe or air cleaner). Tailpipe, I think. I just heard a few pops, sounded like from the rear.
all 100% normal on any engine rich, and some leaks or cracks in the exhaust, (fuel , plus air, = boom )


Recap: 1988 1/2 Samurai, 1.3L with '90 TBI conversion, ECU = 89 Tracker, coil/distributor is vintage 88? what? I think the distributor is from the original '88 1/2 engine, but this could have had an engine swap at some point.
I guess you mean the donor car was a 1.6L G16a ,1990 TBI. but that means, ECU , harnesses, sensors, TBI intake and all parts from G16a. Did the Check engine light get deleted, some how? the ECU is a 56B30 on 5speed. is that it? I was under the impression that the engine was a 1.3L and only the intake was changed (if that's possible) The number on the ECU is 33920-60A31.
60A32 IS A 1989/90 ECU, AND IS 1.6l TBI.
All sidekicks are 1.6L with EFI, (

the samurai
A new 1.3 liter four-cylinder engine with throttle-body fuel injection was introduced with 66 hp (49 kW) in September 1991
as you can see the sammi, is the only 1.3L TBI in usa.
there are no Sidekick/trackers with 1.3L TBI. it was bumped off carbs to TBI + 300 more cc, in 1989.

...no flash codes (no code 12). IT MUST, or is wired wrong or is now STUCK in backup mode. Is there a way to get out of Backup mode, if stuck there? New ECU only?


SIDEKICK g13 1.3L 1989 ONLY WAS SOLD AS CARB. + dizzy only spark.
SIDeKicK G16A 1.6l 1989/90 runs the TBI but ECU does not run spark , only dizzy runs spark for 2 yeas, and behind. 89/90 SAMmi ran 80c ECU.
Sidekick G16a 1.6L 1991 to 1995 56B TBI , and ECU now runs spark.

Replaced the O2 sensor a few days ago, no change.
I'll try to find the circuit problem to get flash codes

mixing up all those parts is not easy, the harness must match.