Please help. I have no idea if I am in the right spot or not.
I have a 93 4L V6 Ranger. I have known this truck from new, it has never been anything but babied. It looks like new on the outside. Only one small parking lot ding that happened last year. But the problem started a few weeks ago. I took it in to the shop, 650km, 400miles away. I got a rad flush and the fan belt changed.
So anyway, I fueled up at the same type of fuel station I always go to, same type of fuel. Then I got 100km, 60miles down the road and it started to ping, and power out on hills. It would only do this when I would have to shift to fourth. Then it would stay powered out until I would go down hill again. Then it would correct itself some.
So I next town i stopped at a different type of gas station., still a nation wide gas station. Topped up, also added some stuff that Red Line makes to clean out injectors. I always run injector cleaner, but this stuff says it works better. So dumped the bottle in like the bottle said to.
Still running bad. Then after awhile it stopped. Worked fine. Then it started again.
Now it has been fine again, but the weather hasn’t been as warm, and I haven’t had to travel as far.
They did have the mass air sensor off, several times at the shop. The first time I stopped to check to see if it had come off for some reason, it was off. Any ideas where to start looking? It doesn't seem to be retarding on the hills, is the best that I can come up with. So it sounds like a brain problem. Any idea of what could have happened to make this happen?
Of course there is no Ford Dealer in town. Nearest one is 400km, 240miles down. There are a few shops in town but would like to see if there is anything I can track down first. Thanks for your help if you can.
Heather