EBSTEVE wrote:I am having the same problem with an 88 2.9, I also think it could be the MAP or BP sensor (I don't know which one the BII has) because it also controls the fuel ratio.
The problem I am having makes it dump fuel and put out tons of black smoke when warm.
The bat has been disconnected for months and I don't know the history so I am unsure. I think I will start swapping out spare sensors to see what fixes it starting with the O2, then the MAP then the temp and ACT.
I think if you look a little closer, those lines control the hot air intake valve that feeds off the exhaust. With those lines disconnected, it was choking itself out.
I am having the opposite problem with my '86 2.9l. it idles extremely erradically and misses like a bitch when its cold but when its warm it'll run perfectly smooth. Is this a problem that needs checking out or will it be fine?
EBSTEVE wrote:The problem I am having makes it dump fuel and put out tons of black smoke when warm.
I had these symptoms on my 86 2.9 a couple years back. Codes brought up the EGR so I replaced that, but that wasn't it. Had a shop chasing after it. They fixed a handful of things but I ran out of money before they found the original problem of it running rich, blowing black smoke, and stalling. Finally talked to a guy who had this problem on a Ranger. At his suggestion I replaced the Fuel Pressure Regulator and it has run well since.
