2.9L Problems

[TimDog]

Hey all,

I have used this site for advice in the past and really enjoy the information you all provide. Well here is my problem. I have a 1990 Ranger 2.9L 4x4 with 119000 miles. When I decellerate or shift down while regular in town driving in after 30min or so my rig decides it wants to start cutting out. What I mean is the tach will jump around and act like it wants to die, when I acclerating again it pulls out of it and runs fine. So to be more clear, lets say I am slowing to a stop light and I shift down from third to second, I let out the clutch and whammo the engine acts like its missing as I tried to explain above. I can put it into neutral and it will go back to idle. Other related problems I have had is sitting at a stop light, the engine will just die, it will start just fine again but dies again unless I go. Anyone want to shed some light on this for me. I know this may sound confusing but this is tough to explain. This only happens when the engine is at operating temp.

Thanks for all your help, I really appreciate it.

Tom

 

[IMenriched]

Hey all,

I have used this site for advice in the past and really enjoy the information you all provide. Well here is my problem. I have a 1990 Ranger 2.9L 4x4 with 119000 miles. When I decellerate or shift down while regular in town driving in after 30min or so my rig decides it wants to start cutting out. What I mean is the tach will jump around and act like it wants to die, when I acclerating again it pulls out of it and runs fine. So to be more clear, lets say I am slowing to a stop light and I shift down from third to second, I let out the clutch and whammo the engine acts like its missing as I tried to explain above. I can put it into neutral and it will go back to idle. Other related problems I have had is sitting at a stop light, the engine will just die, it will start just fine again but dies again unless I go. Anyone want to shed some light on this for me. I know this may sound confusing but this is tough to explain. This only happens when the engine is at operating temp.

Thanks for all your help, I really appreciate it.

Tom

check/replace the Fuel Pressure Regulator (fpr)
also you may have a failing TFI...or a simple vacuum leak?
or the AIC could be acting up...remove & clean w/carb cleaner and replace, see if it improves.

also maybe the air temp sensor.

random thoughts...hope that helps

 

[88RangerXLT]

My TFI was failing in my 88 2.9 and did the exact same thing. They only cost like $30 new and are east to replace. Just make sure you get the removal tool when you buy a new one.