OK so heres the deal. 90 T/A(former L98 car)

Stock as a rock Speed Density LT1 out of a 94 Camaro
Built 700R4

The problem:
When the motor reaches Operating Temp. and you give it WOT it wants to bog for a second and then picks up and then bogs again, all while spitting out a little black smoke. When its cold, she goes like a raped ape...Compression is great, no signs of trouble in the fluids either. I am not able to pull codes because there are no signs of a computer port anywhere. I pulled the computer out of its hiding spot and traced the wires and there is not a OBD port to be found. It sounds to me like a Opticrap going bad, but I don't know and am not wanting to hear it..lol At part throttle it doesn't miss at all, just WOT. Plugs and wires are new AC delco's. Other than this problem, she runs like a dream!!! Help me out please!

 

you nead to scan your computer for codes . pin f on c220 and pin c on c230 are the ones you nead to hook up to . get a cable and download datamaster or freescan so you can get some idea whats going on. sounds like a air fule mixture poblem to me not opti.

 

Do you have a picture of the computer by chance? '94s weren't speed density but were MAF cars and could be the problem for when it goes into closed loop, the PCM doesn't have the signal from the MAF to let it run right.

 

Sometimes the map connector gets loose because the clip often breaks off and that causes weird things to happen. You can tie a ziptie around the connector and also around the map at the same time, or you can buy a new map connector. That might not be the problem, but its worth looking at.