cool84

ok so i have a code 34 showing on my ses light but i dont know what i'm supposed to do about it. the only thing i could find about a code 34 said it was for the MAF and my car is carbed. so what does it mean for my motor? its an 84 trans am but with an 87 lg4 motor(still carbed) i wanna know whats going on so i might be able to figure out why it struggles above 3/4 throttle.

cool84

so nobody knows what the code 34 is? isn't there a list out there somwhere

rwdtech

its something about vacuum differential. i didnt really read it in depth. i tried to attach it, but the Websense here at work wont let me attach it

cool84

hum. i guess i gotta get on replaceing my ratty vacuum lines all over my engine then. maybe i can rout them a little diffrently so they dont look like such a mess.

rwdtech

ok theres 2 flow charts, one for 86 and one for 87

i'll post the one for 87 later, gotta go to class

rwdtech

here is the 1987 service info and flow chart

i spent 15 more minutes doing this than i needed to lol. hope ur happy

cool84

sweet looks like i get to find out what my ecm looks like. would my 84 ecm be the same as an 87 as far as trubbleshooting goes

rwdtech

yeah i was wondering that, i wasnt sure if u used the 87 ECM or not. i looked up an 84 and it was the same as the 86 i believe

cool84

yeah i have the 84 ecm and quadrajet on the 87 lg4. so everything as far as wireing and stuff is 84. but as long as it is about the same it should be fine( if its still a CCC i would assume verry little has changed even though its 3 years newer