Could this be bad TFI?

ChunkFunky · 06-05-2003, 06:14 AM

hmmm.... I'll write it off as bad gas... it's easier then trying to find some other non existant problem... though at this point I still get a slight buck as steady RPMS... if I just cruise at 2500 it'll run smooth and then give a slight buck every once in a while, maybe every couple seconds... kinda wierd...

the cap, rotor, wires, plugs, and injectors are new about a month ago... they are autozone cheap parts, with exception of the injectors.... wich are Ford.

my biggest issue at this point is the harcore bucking I get at low RPMs... THAT has happened since the day I finished doing the heads and cam and such. It's an AOD and my tranny guy called it
"trailer hitching"... said it was ignition related... it's kinda like if you had a 5 speed and you left it in 5th gear and started to slow down it would just start to get nasty and jerky as you got close to the stall point. I figured I higher stall converter woudl mask the problem... I assume the problem was the torque of this combo was moved up the RPM scale so it doesnt have enough down low.

who knows...
-as

06-05-2003, 06:14 AM	#6
ChunkFunky Registered Member Join Date: Apr 2002 Location: Tustin, CA Posts: 465	hmmm.... I'll write it off as bad gas... it's easier then trying to find some other non existant problem... though at this point I still get a slight buck as steady RPMS... if I just cruise at 2500 it'll run smooth and then give a slight buck every once in a while, maybe every couple seconds... kinda wierd... the cap, rotor, wires, plugs, and injectors are new about a month ago... they are autozone cheap parts, with exception of the injectors.... wich are Ford. my biggest issue at this point is the harcore bucking I get at low RPMs... THAT has happened since the day I finished doing the heads and cam and such. It's an AOD and my tranny guy called it "trailer hitching"... said it was ignition related... it's kinda like if you had a 5 speed and you left it in 5th gear and started to slow down it would just start to get nasty and jerky as you got close to the stall point. I figured I higher stall converter woudl mask the problem... I assume the problem was the torque of this combo was moved up the RPM scale so it doesnt have enough down low. who knows... -as __________________ '89 GT Convertible: TFS TW Heads, TFS Street Intake, TFS Stage 1 Cam, FMS 1.6 RRs, 24# Injectors, Pro-M 75mm MAF, No Name CAI, 3.73s, O/R H-Pipe, FlowMasters, AOD w/ Trans-Go Shift Kit