Parts needed to run ECU

[jimlindenfelser]

Ok I have pretty much asked this before but would like more info. I have 16v engine from a 92 Suzuki Sidekick 4 door and manual trans. I would like to know what I would need parts wise to use the 33920-70EA0 ECU which is much cheaper and plentifull than the 33920-58B30. Parts are cheap at my local pull and save. I know I would need the IAT. Also the intake manifold and Plenum with the EGR tube. EGR the same? The throttle body the same? What else am I missing?

Thanks,

Jim

[fixkick]

edited for NO CAT>! I did not know , the CAT was missing,that is the KEY fact here, in USA. are you here?
"what eCU runs best , in a CAT free, G16b"

http://www.fixkick.com/EGR-H3LL.html

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IAT IS EASY. TO WIRES, sensor is GLUED TO AIR CLEANER box, hole. or maybe it has a plug there now? dummy cap? look.

[jimlindenfelser]

Thanks FixKick

So I need the IAT sensor.

Trying to figure out exactly what egr2 refers to. Is it just the newer style main egr valve that the thermoprobe screws into?

Sorry, I am a little slow.

As far as wiring, I will get whatever connectors and wiring I need. I will be completely disassembling the wiring harness to integrate with my samurai harness and have already have info needed to do so.

Car is not smogged and does not have cat.

So I guess I do not need the newer style intake head and plenum with the sst egr tube?

[fixkick]

The air temp sensor was missing on early, 16v engines. (its only fine tuning device, unlike the 8v)
if missing , (on ecu that use it) it will throw a DTC error. running. code 23, it might force you EFI to Failsafe mode.
it is listed i the book as just that. here. using the old name "ATS" so is needed, on all cars, requiring it.
http://www.fixkick.com/ECU/LimpHome/failsafe.html

EGRT, its called,
since the CAT is missing then the EGR is dead anyway, (the EGR mode , uses cat back-pressure to run EGR flows)
so its a moot point, forget all that. and use the resistor fooling device.
Some ECU's, use the (what i call calif) egr2, system. it has a new thermoprobe (by 1995 all G16b have this probe.!)

here it is.
http://www.fixkick.com/sensors/EGR/92-95...oprobe.jpg

this sensor screws in to the side of the EGR main valve. (it's a thermistor , device)
and had a harness connector near by, to connect this cable up.
so on the newer ECU's , that demands this part, we put a 10,000 ohm resistor on the 2 ecu matching pins, (if not you get DTC code 53)
Some ECUs, will go to penalty mode with 53s (or 51) and run rich, (to avoid NOX pollution , the worst of the 3)

seen here B17 to B15
http://www.fixkick.com/ECU/92-95MPI-eng-...e-huge.png

as you can see B21 is IAT

how is that?

the only issue with a/T ECT is pin A22 (may need jump to A2) but mine didnt need it at all . this jump.

[fixkick]

i revised my page, added Samurai mod.'s.

http://www.fixkick.com/EGR-H3LL.html


hit control +F5 to refresh your cache and get new page.
added links to PDF parts cat, and to the huge antedated 95 G16b ECU.schematic.

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that is correct no sst tube
your EGR is dead, with no cat.
the modulator goes dead with no Cat. (if mod even works, now many dont this old)
seen here.
with the CAT missing the bark (putt) can not push at point B.
http://www.fixkick.com/sensors/EGR/modul...tioned.JPG
if that happens the vent , just leaks air here in the red path. killing EGR main dead.forever.

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so having no cat, the best ECU to run is the EGRT , and ignore 51 codes. i hope it dont go to failsafe, mode with 51s.
i do not have the software rules on all ecu made, nobody does.
Some USA ECU do in fact go to punishment mode, in 51s.
Id avoid the CALIF, ECU , if possible , but seems you can;t do to lack of working FED ECU's.

The 1995 ECU are more easy to find, but im not sure on the punishment modes. (failsafe for 95)
some USA ECU, when EGR fails, will go to failsafe. Seen it.
this fact or secret is not documented any where. failsafe true facts. and as related to EGR.
non of this applies to Canada ECUs. or other countries.

If car goes to limhome 51s, then only CAT will fix that. (no correct ECU at hand)

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really the better question is, "what eCU runs best , in a CAT free, G16b"
answers:
1992 ECU (the 58Bxx) is that.
any non USA ECU. for G16B
and
70xxx
59xxx
my not be the answer. (due to software (firmware in said ECU) and the horrors of failsafe..... id avoid failsafe like the plague.


if i had this engine, i'd own 2 ECUs, just to try this out. buy the cheap one, (with the (joking) Calif virus 1995) and see what it does.?
70EA0 (get them while you can still buy them is my motto)
If it don't hold closed loop running, its a NO GO. IMO

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many posters tell me , my ECU don't do that, and i then say well where are you?, and they say, "im in canada."
and i then tell them they have 4 cars up there, in that year. (prior to 1998)
USA Fed.
USA Calif
Canada E28 spec cars.
and gray market, (from other countries, even JDM cars)

then they tell me the ECU p./n and post hood sticker and ahhhhh there you go,
and each have different software. all do.

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i do not have the decodes on all numbers below, line 1. and the last line is obvious

http://www.fixkick.com/specs/Body-TAGS/h...ge_32.html

the ECU is tuned for smog. and car body weight and if 4wd or 2wd, and transmission.
the key issue , is EGR. here.

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on some ECU, the EGR must work, or you get punished.

[jimlindenfelser]

Thanks FixKick

I think in this case I may go ahead and run a cat if I need to to use the 95 ecu

So if I do have a cat. Then I would need the new egr and thermoprobe. If I had these and they are working properly with the ecu, would I then want the new intake manifold, plenum and sst egr tube? Not sure that those are necessary or just a better design.

Just want to know what to watch for at the pull and save. Tight now I can get the newer style intake, plenum, and sst egr tube.

Jim

[fixkick]

the sst (i call this the mono port) is the best, its way easier to clean
the quad ports EGR is pure hell..

it is a way better design. for service.
hey do it 1 step at a time.
if car has no 53's and 51 ones only and ecu holds Closed loop, and mpg good, just ignore, 51s.
if 51s suck fuel, add the cat.
that;'s what id do, id let the ECU's dictate to me, with out the 58B box.
or buy one from canada, they have many due to most these cars have turned to rust and they get failed up there for that. and cars can not be licensed.
so ECU's are feed up./

i dont know how to use canada, ebay, mode. that be cool way to find them.

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happy Pick and pulls to YOU !

[jimlindenfelser]

Ok I will plan on going with the 33920-70EA0 ecu and go from there. Engine won't go in until next winter but i have been stressed about what route to go and parts to look for. Thanks for your help.

I did take my quad port intake apart and clean. All 4 of the tiny passages were completely clogged. Took about 15 min on each hole with a bent wire to clean out. May keep an eye out for a mono port to hold onto for a future swap out if things get clogged up again.

Thanks again

[fixkick]

the best way is to use a matching harness to the 70EA0
yes , with the intake man off, those holes can be easily cleaned. if not too packed up on the back side. (gallery)

good luck! and let me know how it goes.. or any probs.