Do you still think it's my opti? When I installed it she ran perfect for half a day.

 

re read your posts and changed this.... if u have replaced the ignition modual already im going to say yes. i could be wrong. was there any rust or water in the opti

 

Try unplugging the MAF wires. The car will run OK with the MAF unplugged, but it will force the PCM into open loop. This means that it will run on a preprogrammed mode and ignore most sensor inputs. If the surging stops with the MAF disconnected, it indicates a sensor problem, but not necessarily the MAF.

 

The one I removed looked good on the outside, and on the inside was some rust in the bottom on the opti. The one I put on worked fine last I used it but was covered in oil and has 130k on it. I will try running it with the maf disconnected.

Thanks

 

Ok, I tried it with the maf disconnected and it surged much more. If I held the rpms at 1,200 it would surge up and down about 150rpms.

 

oil is not good on a opti reader. did u try cleaning it. electric connection cleaner should work. well my opti is good. found water in the ecm/ecu its got rust in it. did not exspect that. i think i found another ecu but i wont believe till i see it. msd is fine.

 

I cleaned it before I installed it. Thats good you don't have to take on that job again.

 

After reading some post about an LT4 cam. Would not replacing the stock springs cause any problems? I have the LT4 hot cam with stock springs and rockers.

 

im pretty sure that stock springs cant handle a non-stock cam. from what i have read.

 

^^^right on. lt4 hot cam kits for the lt1 come with heavier springs. should get some 1.6 rockers to.