cm644

I have an 87 gt convertible and its still sd. It has a 65 mm tb and full catless exhaust. It idles like its surging and sometimes right when it starts itll die off.so i was wondering if being an sd car this is the problem and should i convert to maf. And one other thing, having no cats for ****s and giggles i had emissions done in ct and failed. figured id give it a shot. I have a set of high flow cats im putting in but one of the 02 sensors on my catless h-pipe is missing . I plan on getting a new one for the high flows but what kind of problem would that missing sensor cause and i should pass with the high flows on right? Thanks for all your help.

AdderMk2

So here is my attempt to decipher your post.

87 GT (SD)
65mm TB, and offroad exhaust

Problem: Car surges/stalls

Quirks: missing an O2 sensor.


I'm going to have to call a DERP on this one. Your car is missing a vital piece of its self monitoring equipment, and you want to know why it runs bad.

Solution: Replace both of your O2 sensors, reset your ECM, and make sure you dont have any vac leaks.

sn95_331_GT_ yellow

facepalm?....

but yeah, out BOTH O2 sensors in, reset everything and hopefully it sorts itself out...

Venomantidote95

Yes my 87 has a lot more done an it runs fine. Its still SD.