spaz1879
Well-Known Member
i am also having a similar problem i was told it could be the map sensor that is located on the passenger side fire wall with a 3 wire plug going to it but i am doing my research before i just start replacing things 
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Stumbling 2.9L
- Thread starter The Fox
- Start date
gertsdsbs
Well-Known Member
Turns out it was a freaking faulty sparkplug 
What are the odds of getting a brand new faulty spark plug 
What are the odds of getting a brand new faulty spark plug The Fox
Well-Known Member
- Joined
- Oct 31, 2008
- Messages
- 139
- Vehicle Year
- 1988
- Transmission
- Manual
Good enough that you managed to get one.
As for my problems, I will be replacing the plugs, wires, cap and rotor here in the next few months. I will first have to find the coolant leak somewhere in the back of the motor. It is not a big one, just a few drops while it sits at work. Odd thing is that while I was on a break, I placed a sheet of big paper under the truck with bricks to hold it down and ran the truck for 20mins at idle to get the temp up to normal. I looked under the truck and no spots on the paper. But I let it sit for about an hour then checked on it, there was a few drops on the paper that looked like oil, but tasted sweet like coolant. I just fixed the oil leak I had on the valve covers, both sides the bolts were so loose I could turn them by hand. That is one leak taken car of, now another to go. I am thinking it is a freeze plug, but they only have like 48k on them in 12 years. Seem like a short time to go as the former owner did a flush every year and a half and took care of it. They are also stainless if I remember correctly. Only other thing it could be is a cracked heater core, a known problem with these trucks.
Nick
As for my problems, I will be replacing the plugs, wires, cap and rotor here in the next few months. I will first have to find the coolant leak somewhere in the back of the motor. It is not a big one, just a few drops while it sits at work. Odd thing is that while I was on a break, I placed a sheet of big paper under the truck with bricks to hold it down and ran the truck for 20mins at idle to get the temp up to normal. I looked under the truck and no spots on the paper. But I let it sit for about an hour then checked on it, there was a few drops on the paper that looked like oil, but tasted sweet like coolant. I just fixed the oil leak I had on the valve covers, both sides the bolts were so loose I could turn them by hand. That is one leak taken car of, now another to go. I am thinking it is a freeze plug, but they only have like 48k on them in 12 years. Seem like a short time to go as the former owner did a flush every year and a half and took care of it. They are also stainless if I remember correctly. Only other thing it could be is a cracked heater core, a known problem with these trucks.
Nick
UnderMedikated
Well-Known Member
- Joined
- Dec 7, 2008
- Messages
- 103
- Vehicle Year
- 1988
- Transmission
- Automatic
My 88 just started doing this. I also have a cracked head so this may be causing it.
Will check fuel pressure regulator.
Will check fuel pressure regulator.
UnderMedikated
Well-Known Member
- Joined
- Dec 7, 2008
- Messages
- 103
- Vehicle Year
- 1988
- Transmission
- Automatic
This article sums up your problem 2.9 and mine. This is a Bronco II but same under the hood:
http://www.forbes.com/2004/01/23/cx_dl_0126featslide_5.html?thisSpeed=20000
http://www.forbes.com/2004/01/23/cx_dl_0126featslide_5.html?thisSpeed=20000
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