Thread: Engine Codes OBD1 Cable 1993 Chevy

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I jumpered the A & B terminal to get the service engine light to flash. I got

1 2
1 2
1 2
3 3 3 3
3 3 3 5
3 5 3 5
6 7 6 7
6 7


Can anybody look these up and tell me what each means?
Thanks a bunch

does the motor run good canibalchicken ?

Cool deal. I reset everything and all the same codes came back up. That 35, that's the idal air control motor, right.

Thanks

o yea the motor runs good at 2000 rpm's in park. It will idle to 500 but it's ruff. I still need to tweek the valves a little.

check for a vac leak also that could cause the idle problem and make the map read wrong.

Yep checked for vac leaks. Not to many vac lines on this one. Only 4 plus the brake booster. It's got 166k on the map sensor so it's probably about time.

Originally posted by canibalchicken
Yep checked for vac leaks. Not to many vac lines on this one. Only 4 plus the brake booster. It's got 166k on the map sensor so it's probably about time.

when you pluged the dist back up the timing picked up on it right.?

Hum no that I thank about it I need to go back and re check it. It was firing at 5 deg btdc at like 2000 rpm's.

Originally posted by canibalchicken
Hum no that I thank about it I need to go back and re check it. It was firing at 5 deg btdc at like 2000 rpm's.

thats the problem then, it should have been all over the place from 20 to 45 degrees. sounds like its not pluged in.

OK I changed the map sensor and the idle air control motor. It cleared the codes. I still have the code 67. at idle 400 rpm's the timing is moving between 5 deg btdc and tdc. When I rev it up it goes beond the marker btdc. All good. I started adjusting the valves on the driver side. I have one rocker that is shooting a stream of oil out and others just ozzing out. a few are not getting any oil. What do I need to do about that?

ok canibalchicken i should have did this in the first place, but ive told you all wrong on this timing, i had to look it up, but on this motor the timing wire is a 1 wire lead over next to the dist. thats tan/ black strip. unplug it, set the time on 0 degree and then plug it back up. should make it better. let me know.

ok I don't have a 1 tan wire with a black strip. ?? I have one plug that has 4 wires going from the main harness to the distrubitor, 2 wires going from distributor to coil, and 2 wires going from coil to main harness.

Originally posted by canibalchicken
ok I don't have a 1 tan wire with a black strip. ?? I have one plug that has 4 wires going from the main harness to the distrubitor, 2 wires going from distributor to coil, and 2 wires going from coil to main harness.

is that the dist. that goes with that truck?

Yes it is. It is a new one but it looks identical to the one that was on it. HEI with remote coil. Accell Spiral cor wires and bosh platinum 4 plugs

[QUOTE]Originally posted by canibalchicken
Yes it is. It is a new one but it looks identical to the one that was on it. HEI with remote coil. Accell Spiral cor wires and bosh platinum 4 plugs [/QUOTE


and its a 1993? alldata says a tan/ black wire. ok take the 2 wire plug crank the motor up unplug it and see if it changes the timing.