2.9 still pain in the butt

[Mv7fd]

So my 88 ranger will stall out every now and again and run a little rough and when I go down the highway it'll like die for a second then come back or run like shit and I put the throttle to the floor and it'll straighten out. I was told maybe the throttle position sensor how would I check this

 

[adsm08]

Reads more like a bad O2 sensor. Unplug the little bugger and see if she starts running better.

 

[Mv7fd]

It doesn't happen all the time it's really weird. It didn't happen to me this morning and sometimes it won't happen for a week. I put a new distributor on it awhile back and then a month later it started this

 

[jhammel85]

I was thinking the same. When you say die does it actually shut off or does it basically bog down for a few minutes and straiten itself back out? If it bogs down, I bet it's the O2. Disconnect it like ADSM said.

 

[Mv7fd]

It'll like die for a second then come back. The speedometer gauge will drop and everything then come right back. And sometimes it'll bog down real bad but if I give it more gas it'll bring it back to normal

 

[jhammel85]

TFI Module or some kind of grounding issue? Check the grounds on the back of the heads. Maybe you bumped it removing the distributor.

 

[Mv7fd]

I'll get a new tfi. I hope it fixes it. Didn't do it at all today and when it does bog down I can make it continue to do it and if I want it to stop doing it i'll give it a little more gas. And right before it dies when I'm at a stop the rpms will bounce from a little above normal and then drop and then come back up until it finally dies