car doesnt act funny or anything at cold starts it idles at like 500 for a couple seconds but its always done that and the light comes on and off periodically but shuts off i get on it is there a way i can read the code with out a obd1 scanner

 

On a 93, you can flash the codes on the SES light, by shorting the pins in the ALDL connector. That is the only year LT1 you can do that on.

Courtesy of Shoebox (might want to look over his comprehensive LT1 website if you aren't familiar with it):



http://shbox.com/1/4th_gen_tech1.html

 

thanks brotha only problem is the ses light isnt on all the time most of the time it shuts off before the car gets shut off it comes on and off like an *******

 

That doesn't matter. Once the SES light comes on, the code that turned it on is stored in the ECM and remains there until the problem goes away and does not happen again for about 50 "drive cycles". Even if the light has gone out, you can retrieve the code.

 

F= FLASH p = pause lp = long pause
f p fff lp f p fff lp f p fff lp ffff p fff lp ffff p fff lp ffff lp ff

or if you know where i can find out how to decode them

 

after its done flashing the 12 initial dtc thing and then flashes the code it flashed the dtc again could there be more codes after?

 

Looks like Code 43 and that's the Knock Sensor Circuit.

 

It's hard to read in the above picture link, but if you go to the source it's easier. The decode explanation is right there.

 

what could the knock sensor circuit be from? and wouldnt i hear it knocking?

 

No. It just means there is a problem with the circuit. Bad wire, bad sensor, etc... something is wrong.

Do a search on here and you will find a detailed way to check for three different things concerning the problem. I just did them about a month ago, but mine somehow fixed itself!

 

oh sweet well i feel better now the car needs some work header gasket is beat and i need a new set of wires gotta finally give in and buy the thunder racing over the top kit

 

As noted, its a problem with the electrical circuit, not actual knock. But when you have DTC 43, the ECM retards the timing significantly, to protect the engine in case there is knock. You are losing perfomance.