Duspan

I just bought a 88 GT AOD and it needs a little work......As most do. Anyway, the car runs pretty strong for the age but there are a few problems. First, the car seems to load up when driving around town, almost like a two-stroke. I just rev it a few times and it clears out. There is no smoke coming out the pipes either. I just put new plugs, wires, cap and all that stuff on today with no change. The car has the stock headers with some cheap mufflers so it seems to not be breathing well. I was wondering what would cause the car to build up like that. Could it be that I need a new coil or something?
Second, the transmission shifts like it should when getting to speed but when I slow down and drive around town it seems to stay in third.
If any of you all have any ideas it would be appreciated..... Thanks.

OneFine89Mustang

your cats could be backed up with S### might be causing the load up

nitrous_bob

i would look for vac not being attached/ broken going to the fuel pressure regulator. if you pull the vac line off...it bumps to a constant 42 psi instead of regulating between 36-42

does the tranny bog down ? or just doesn't wanna downshift. believe it or not...thats probably normal on an aod, i remember both of mine not ds'ing very well

Duspan

Thanks guys, it doesnt have cats so that was not the problem or the vac lines. The timing was off just enough to make it do that.

mjr46

glad to hear you fixed it

aode08

ive seen mechanics replace transmissions, when the timing was off, due to the fact they were transmission specialist or just plain lazy.

OneFine89Mustang

my timing was off a air line when i did my cam and intake job..it was only off a hair line and made the car feel like it didnt even want to move..fixed the timing and it was perfect every since