Hey everyone I have a 1989 Rs camaro it started its life with me as a v-6 car and since then has had a few 350 put into it. This time around I went with a 350 Tpi out of a 91 Camaro (Speed Desity) took the full wiring harness pass key system etc. First thing in the morning car runs great with no issue get it up to temp still runs good it seems like once everything get warm to the touch tho i develop a Miss fire rough condition that makes the car almost impossible to drive. At this point I now have a New Distributer , esc , ets , cap n rotor , plugs, car is holding good fuel pressure No engine light is being thrown. Just want to see if anyone has gone through this or has some insite. and yes it is the correct v8 fuel pump

 

If the stock Multec injectors are still in the engine get some Bosch type III's to replace them. Then just throw the Multecs in the nearest trash can.

RBob.

 

alright ill look into that AN UPDATE THO car threw a code 23 today i believe thats a map code so im going to do a little research into that tommorow if anyone has insite on that

 

scratch that code 23 is MAT Sensor :/

 

It's the injectors. Ohm them out cold. Use your DVM set at 2000 ohms, you should be getting at least 16 on each injector. Do this again with the car warmed up.

 

Thanks for the input turned out the mat was unplugged .... plugged it back in same thing happened will be testing the injectors tommorow when i get a chance

 

update replaced all the injectors code 23 keeps coming up and the issue begins

 

Code 23 is MAT low, such as it being disconnected. The MAT itself could also be bad.

What did you put in for injectors?

RBob.