Need some help

[fixkick]

hello

i just bought  a 1992 geo tracker 4wd 5 speed. California car. 

Having some issues - it smokes a lot while warming up and the idle is kind of wonky. The car is missing a catalytic converter. 

The seller gave me a "egr valve temp sensor" which is new, but he didnt know how to install it. the egr valve thar  is currently installed has the sensor, but the wire is cut, and i dont know where the wire for the sensor is supposed to connect to. cant find a port anywhere. 

another thing is the wiring above the transmission. what is the wire harness that screws into the top of the transmission meant for?

its plugged in to the harness, but the 2 black wires got disconnected. can this cause any issues? 

im trying to figure out why the car is smoking and idling weird, and if the egr valve sensor or the wire coming from the transmission is the cause. 

any advise would be greatly appreciated

this is easy stuff,,  they ake 2 engines 1992,  both 8v and 16v and in both calif cars and FED cars USA, (are you USA or CANANDA)
the EGR, is calif or fed too,, one uses the thermal proble (sensor ) the other uses engine vacuum (MAP) to conduct the EGR test via the ECU,
so what matter on a new car,  is calif or fed car, then near 30 years later, what ECU is there. only. wrong ECU happen.
also the EGR harness rear of engine is not the same on both cars.

To ID a car the hood sticker is first. open hood look up see large hand sized sticker , the words CALIFornial at the bottom tell you DAY1 deliverly  of FED or CALIF car. actual
The ECU next tells this as do all related harnesses. (lots there are more world wide)
is your car 2doors or 4.?
ok 4wd,  
5speed,  are said wires above 5speed or 4wd transfer case, (answer is both) 5speed reverse switch missing kills dead the reverse lamps)white.
the transfer case  is , 2 switchs (4wd mode, and low rage gear) this tells the ECU how to do for fuel mix (fine tuned 4wd ), and the dash lights, cluster 4wd , indicators.

Smoke comes in 3 flavors (1/2 joking) (CEL = check engine lamp)
1: BLACK = UN BURNED FUEL RICH RUNNING, (CEL LAMP GLOWS RuNNINIG) KEY ON CEL GLOWS, THEN START ENGINE AND CEL LAMP GOES OUT.
2: WHITE SMOKE AND SMELLS LIKE  BURNING OIL,  THIS BAD RINGS ARE VALVE SEALS. AND TANKS A LONG TIME TO DISSIPATE.
3: WHITE SMOKE, IS STEAM, SMELLS NAST, LIKE ANTIFREEZE AND IS, AND IS CRACKED BLOCK OR HEAD OR ANY WAY FOR WATER TO HIT THE COMPBUSTION CHAMBERS.
AND THIS STEAM GOES AWAY FAST,  IF YOU KILL THE ENGINE AT THE KEY. UNLIKE #3


all wires told so far will no cause  any of that. above. (EGR we will discuss more after telling me the answers to green questions)
the EGR sensor thermal probe only is for code 51 DTC EGR test,  if the DTC errors are 51 this is it. (diagnostic jumper shows code 12 = means good, all others not)
most ECU will also show code 53 error DTC for missing proble sensor, or using CALIF  ECU on FEDERAL car or the reverse.
CALIF has its one SMOG department called CARB, (or California ARB air research board) and they dictated allt his since 1989 up.  EGR and exhaust manifolds (16v) are not the same.

NO CAT,  (it's ok ) The CAT missing , means the EGR valve is totally disabled. This system (old and super wonky design) used CAT back pressure  (small) to run the EGR modulation flows.
so there is no EGR on this car and will fail 51 codes. if driving far, 20miles on hot 180f + engine,  when full hot and normal engine temps the EGR test then runs and then fails 51 DTC
the ECU smog test checks that the EGR opens while cruising never at idle and never at WOT (wide open throttle)

in your case just make sure the EGR is closed, fully inside or the engine stalls or runs at 400rpm and shakes like a wet dog (woof woof)

I hope you are not living in calif. as as the STATE  smog testers will fail that car in 1sec.flat no cat present,  (no blame me) some state(most) now exempt cars this old. (too old it is)
lots of cars in calif are FED, driven from other states into CALF and is OK, that.


idle will not be smooth until engine gets hot and idle controls begin  (180f thermostat works) and at 150f this engine transitions TO HOT NORMAL MODE.
GOOD COMPRESSION? 150 ON 8V  IS IT 8V?
NO WATER IN OIL, OIL IN PAN LOOKS AMBER NOT EVER LIKE CHOCOLATE MILk EVER.

ecu NOT IN LIMPHOME MODE,  CODE 12,  MEANS THAT.
FPR NOT BAD (CAUSED FUEL PRESSURE TO NUTS AND NO MORE REGULATION)

8V  ENGINE HAS 1 INJECTOR IN TBI
16V   (ENGINE) HAS 4 INJECTORS MPI  IF ONE LEAKS IDLE FAILS. SHAKES.

NOW SOME SECRETS
TRACKER = GM = GEO  AND GM USES RPO TAG ON THE GLOVE BOX LID

https://fixkick.com/specs/RPO/RPO.html

This is my microflims, (inverted by me) to see all codes, for RPO are GM AS BUILT CODES, for tracker only  here.,

even canadian version , calif, fed and transmission used new, and well lots more,  all in the glove box inside of front door of box. sticker large
then this

the hood tag, when new , day1 this is king, Until hackers hit. OFF MY HUGE TAG PAGE.

https://fixkick.com/specs/Body-TAGS/IDentification.html




how many doors on car?
8 valve or 16v? TBI or MPI same meanings.
does tag above show california if not IT IS FED only CAR !  (USA EPA code = FED) 8v  only. TBI = 8valves.?
this take means FED + CALIF certified car.
and means is CALIF ECU. for sure, and vacuum hose routing.




good day to you and glad to help you any way I can and CHEERS!











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