trying to get my 240 ready to sell, has 2 problems I need to work out first.

[Altiman94]

Ok here are the two problems.1). Bucking under constant throttle. Only happens when the rpms are between 2k and 3k. Does not do it upon acceleration, only on constant throttle.

2) Idle unadjustability. my car will idle at 2-2.5k upon start up and will stay that way when it warms up. I can adjust the idle down via the iaa screw in the back of the manifold and it will go down until I restart my car and then itll go right back to where it was previously(2-2.5K)

Please help me figure out these problems so I can sell it.

[NISTECH]

I think its a vaccum leak, take a look at the injector orings you put in recently.

[Altiman94]

ill take a look, thanx

[gunner0209]

My '90 fastback was doing similar things just not as bad and i finaly found a vacume hose that had broke along with a dead maf sensor