alright i have a 92 cx with my old gsr swap recently dropped in it. On occassions When my car does start it boggs really bad, and sometimes would idle at 200 rpm, rev up to 2000 rpm for a couple of seconds then die out on me. Last night we jump started it so i could bring it to my house and idle stayed constantly at 2000 without shutting off on me. The only code that its throwing is code 4 crank position sensor. any advice or input would help thanks.

 

night bump.. i need to get my car running!!:-/

 

Check for power(12v), ground, and signal(5v) at the CKPS(if its a three wire). If thats good, shitcan the CKPS.