hey guys just got my new motor installed swap a 305 to 350 in a 91camaro. heres the problem idils real ruffs and throw a code 43 i think. also the two sensor on the heads arent hooked up, the ones right under each exhaust manifold but dont think thats the problem. any ideals, please help.

currenty sett up
stleathram intake
305 injector
305 ecm
350knock sensor
new iac valve

 

i am pretty sure thats the problem...did you do your timing?

 

timming is set but when u hook the ecm back up 2 contro the timming it jumps all around the place. can u tell me what 2 sensor they r? i think it just control the temp gauge and something 2 do with emission.

 

do you have the Oxygen sensor in? and all vaccum hoses hooked up.? do you hear a "Hissing" nosie?

 

Hook up the knock sensor?

 

The one in the driver side head is the temperature gauge sender, you don't need it if you don't care about the gauge working. The other one is the temperature sensor for the ECM. You need that one, or you'll never make it out of open loop.

Code 43 is a knock sensor error, I believe. It will be set if the ECM doesn't hear a knock at WOT while hot, or if knock is present for 5 seconds during normal operation, like would happen if the sensor was disconnected.

 

knock sensor is in. tryed the 305 and the 350 knock sensor, still getting the same code. when the car gets hot it starts 2 surge - loop a lil bit, it acts like it has a big cam. i was thinking i need a 350 computer. tryed 21 injectors this morning it helped a lil........ MAybe. the esc is in the computer on my 91 car correct? anymore ideals

 

one more thing, if temperature sensor for the ECM wasnt hooked up. the one on the right side of the head, would that make it surge - loop?