"96" f150 4.9 inline has

oil pump or cam going bad

A bad throttle position sensor wouldn't cause those symptoms. Return it before you waste more money. Check the EGR valve to make sure it's fully closed at idle

there is a frost plug there

Do the dash warning lights work when you turn the key to the run or crank position. If not you may have a bad ignition switch which is pretty common for those years.

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check your coolant fan operation. if okay, next place to look is radiator restriction.

1989?? have a funny feeling it could be either crank sensor or the ignition module ,pretty basic vehicle electrics in them days

change the fuel filter. its most likely clogged and starving the car and while it sits it gives itself time to reaccumulate the proper fuel.

the car is definately overheating,have it checked out soon

Hi,

I've had Fords for 20 years, and have done a lot of work on most of them, having bought them used mostly. I currently have a 94 Ford Thunderbird with 150,000 miles on it, and the transmission was replaced at about 70,000. Although I have not had an explorer (but I did have a bronco), my boss had this exact year. He also had to change out his tranny before 80,000 miles. Other problems ford trucks tend to have are oil leaks in bad places (flywheel, head gasket, etc...). I say bad, because these areas are very expensive to fix. my T-bird just lost it's heater core, and to replace it costs about $700.00

All that being said, if you get it for a reasonable price, and are ok with putting money into it because, say, it's a really clean one, then you might want to buy it. It's really up to your own discretion, because when a car gets to be over 10 years old with over 100,000 miles, anything can happen. Last thing: it is entfirely possible to drive this car for another 100,000 miles, provided the previous owner(s) maintained it very well and didn't take it off road at all. I got 200,000 miles out of my bronco's original motor. The previous owner didn't take it off road - but I did! ; ) Take care.

Well it could be many things, But have you relpaced the dist. cap and rotor, within the last 15,000 miles or wires and plugs??? next step is the coil ? then it gets fun. like timing. but I think most jeeps with a Inline 6 have a bullet proof engine for the most part. As we all know there is plenty of semi's on the road. well the same set up is there. as an Inline Jeep. I would have to say 90% of semi's on the road are inline 6 cyl. engines. and may of them go to 1million miles.
so plugs,wires, cap, rotor and ignition coil. that is a good starting point.