Hey guys my car died off the highway. It cranks but won't start. There's no spark even after changing the distributor. The ECU read a 4 and 3 what could it be? Oh yeah it's a LS engine with non OBD....thanks for any help

 

anyone?????

 

3 = MAP; manifold pressure sensor
4 = CKP; crank position sensor
Those are for a '95, do the earlier ones use the same codes??

They seem kind of unrelated to each other... Maybe check how good the wiring connections are at the ECU??

 

You said you had no spark?? might be a bad igniter, or a your coil. Pop the cap off and check your connetions, make sure nothing is touching each other.