Thread: Engine Codes OBD1 Cable 1993 Chevy

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Tried unpluging them, it just killed it.

the tags show 1993/chevy/LL (I don't know what LL is, it a suburban.
1GNEC16K4PJ409352

my book doesn't say anything about OBD-I connection only II and one with a vacuum advance. I have a scan tool for the OBD-II but it wont hook up, plug different.

Originally posted by canibalchicken
Tried unpluging them, it just killed it.

the tags show 1993/chevy/LL (I don't know what LL is, it a suburban.
1GNEC16K4PJ409352

i dont know what to tell you now i looked up chev pick up , not the suburban but i reall dont think it wiill be dif. all i can do is take all of this info and look it up by the sr. no. i cant grt to the alldata now though. i can in the morning if you want me to. that color wire was that that want pluged into nothing? it sonuds like the timing is working but it sounds like its late. what happens if you jack the timing around 10 degrees?

yea if you could look it up that would be great, I got time. I'll jack it up to 10 and let you know.

The plug that goes to nothing has a light blue and a tan with white stripe. I put up two pictures on my gallery. Labeled it I dont know what this wire is.

Thanks

Originally posted by canibalchicken
my book doesn't say anything about OBD-I connection only II and one with a vacuum advance. I have a scan tool for the OBD-II but it wont hook up, plug different.

then you dont have OBD-2 and you cant jump the OBD-2 manualy either

let me know and the OBD-2 didnt start before around 1996

Ok I set it to 10 and it ran ok with no codes . I drove it around the block 1/4 mile got back in the drive and the light came on and and then the engine died. It was doing good till the light came on.

I also think I got some bad lifters. some are tapping. I have re adjusted the rockers three times

Originally posted by canibalchicken
Ok I set it to 10 and it ran ok with no codes . I drove it around the block 1/4 mile got back in the drive and the light came on and and then the engine died. It was doing good till the light came on.

I also think I got some bad lifters. some are tapping. I have re adjusted the rockers three times

if it will start see if the timing is where you put it. the computer might be resetting it .

When I first fired it up the service engine light was not on. Timing was about 1/2" before 14. Then the light came on and it went to 12.

Originally posted by canibalchicken
When I first fired it up the service engine light was not on. Timing was about 1/2" before 14. Then the light came on and it went to 12.

and what code is it showing now?

Originally posted by lt1s10
and what code is it showing now?

when you unpluged the 4 wire plug did that effect the timing?

The one with the 4 wires killes the engine also.

Originally posted by canibalchicken
The one with the 4 wires killes the engine also.

did it kill the motor or just caused the timing to go so low it wouldnt run, would it have run if you had kept your foot on the gas. if all of those wires cut the motor off then you have not found the timing wire. you dont have a vac adv right.

that still should not make a dif, if the motor turns over ok dont kick back then the computer should take over after you crank it. what are the codes now?

i think the timing ? would be if the timing is pluged up. it sounds like it is.