how to do a diagnostic

[khills]

i was driving on the highway for about 5 or 6 mins (city driving 10 mins before highway) and the check engine light came on. after leaving the car parked for 2 hours, i started it up and it was off...untill iw as on the highway for, again, 5 mins. I got home, turned the engine off, took the keys out and restarted the engine, and it didnt come on..

tryed to figure out that E1 and T thing...i dont know what im doing though, i THINK i know what cable to play with..but i dont know which is T and which is E1....even if i do, will the code show up if the light doesnt come on until the highway?

(1986)

[suprra_girl]

sounds like code 52 which is knock sensor, check to make sure your plugs aren't broken and that (if turbo) both are plugged in (if na) that "the" knock sensor is plugged in

get a piece of wire and you should have to open the lid on the diagnostic box, inside the lid is a diagram of what each pin is, there you should find where te1 and e1 is

if ever you do a diagnostic and you have put the wire in but your check engine light stays lit and doesn't blink thats because the wire has not made firm connection in both of the terminals

[khills]

call me stupid, but i cant find a thing that talks about the knock sensor, even online all i get is 1992 and newer...i dont know where the thing is..

(it couldnt have been my gas cap not fully tightened could it? i saw today that it hadnt been tighened all the way till it snapped. I know the newer cars have that problem connected to teh 'check engine' but im not sure if the older models do)

[suprra_girl]

do a diagnostic lol
and no gas caps aren't connected to the check engine light

let me know if you are having trouble doing a diagnostic and i will run thru it in pm step by step for you

[Isphius]

I was just wondering, Is there anything else usefull to do with these ports? There is a bunch of em, Or did they just do that to prevent us from doing our own diagnostic when the car was new? haha. I also got code 11, And i had my ground battery terminal come off, But i fixed that. Could it just be stored from that?

[suprra_girl]

yep from the ground cable

FP and B+ runs the fuel pump at 12v when ign is on
some cars have ect in theirs so you do ect & e1 = trans diagnostic
can't think of the rest for now lol