i was replacing my egr on my 91 gxe with one from my 94 gxe parts car yesturday when i noticed that the EGR from the parts car had a sensor on it near the inlet to the IM and the EGR to the 91 did not. i also found that the harness near the EGR in my 91 had a connector with a factory cover on it and the 94 had the same connector being used for the EGR.

i found out that the sensor is a temp sensor. im wondering why my 91 didnt have it but had the connector for it?

the other interesting thing is that the parts car had the same connector cover taped to the harness and i found no mention of this being related to only sertain years. does anyone know anthing about this sensor and if it unnesesary to have? it is connected to the Automatic transmission control modual.

i will try to take picures to post if i get the time.

 

thats EGR Temperature Sensor and it was only used in California Models...no where else....

 

Yeah I have that on my 93. Mine's a cali spec model but it serves no real purpose. I replaced it with a 31k ohm resistor when I deleted for the spacer mod.

 

Actually, the egr temp sensor was standard equipment on all 94 ve30de's, not sure on the vg. My ve was purchased new in new jersey, it has the egr temp sensor.

 

VG is standard too, I have one.

 

my car is a 90 but someone (warranty replacement or otherwise... i have no idea when or why) put a 94 cali motor on it, so it's got a BPT and an egr temp sensor. whoever did the swap was intelligent enough to swap the whole engine harness rather than splicing on the 93-94 injector plugs onto the stock '90 harness..

edit:
based on mr 3g and mr greeny, it appears we have a consensus that at least all 1994 motors had them, whether VG or VE. now for someone with a 89-93 to chime in...

 

Both my 89 and 91 cali spec cars have the EGT sensor for the EGR and my 91 fed spec did not.

Im pretty sure the EGT sensor became standard in 93, but it may have been 92. This is for both VG and VE engines.

 

oh never knew they made them standard on 1994...

 

i haven't had time to put a multi meter to the connectors but is it safe to say that if i plug in the sensor that the Tranny control modual will know what to do with it? probably not since its never had it before.

 

^^ wat

we're gonna need a lil more info on that taped-up thingy. you mean inside the car on top of the ECU, or out in the engine bay somewhere?

 

http://i164.photobucket.com/albums/u.../90GXE_BPT.jpg

do you have one of those?

 

the taped up thingy was a connector cover. both cars had it it on the harness to the left of the airbox and master cylinder

My 91gxe has the connector with the cover on it

the 94gxe had the temp sensor pluged into that connector. but it had the same cover taped on the harness next to it, like it was added or something

 

no i dont. only on 89s and 90s i thought

 

so what you mean is that the cover was taped onto the harness b/c the harness was plugged into the sensor?

 

for reference:

 

yes exactly. since it didnt come with the sensor on my 91 that means that if i pluged it in it would mostliky not do anything at all right?

 

yeah i mean, i plugged mine in for no reason as well. just bc i felt like plugging it in. but it hasn't done anything, as far as i know. my 89 motor doesn't have it so i'll just put the cover on it from the other car, or swap the whole harness maybe since the injectors are gonna be different from my 94 motor (90 car, meaning the oner swapped harnesses with the engine years before i bought the car). it'll be cleaner to have a m/t harness than an a/t harness anyhow.