Question for a friend
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Elder User
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From: Lolo Montana
Question for a friend
A good friend if mind just bought a 1985 Bronco. It has a 4" lift, newer engine, trans, brakes and exhaust. He paid $2500.00 for it. It came an extra tail gate. The rust is pretty bad on it. However, he bought it to use, not to look at.
What should he beware of? Any problem's with this year? The engine is a 351. It wanders when going down the highway at around 60 mph. And now the engine started to rattle in higher RPM's.
He has had it for only about 1 week. I told him that I would ask here.
Thank you for any help.
Tom
What should he beware of? Any problem's with this year? The engine is a 351. It wanders when going down the highway at around 60 mph. And now the engine started to rattle in higher RPM's.
He has had it for only about 1 week. I told him that I would ask here.
Thank you for any help.
Tom
Post Fiend
Joined: Mar 2005
Posts: 8,542
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From: Louisiana
For the wandering problem, it could be the alinment. That model is pretty good there isn't anything to much to look for, but if he wants any parts for his bronco he could get them from a 80-86 Bronco.
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From: Lolo Montana
Another problem that he is having with it, is around 3000 RPM it starts to run rough and clatter's. He pulled the valve cover's on both side's and all felt good and tight. This only happen's every once in a while. It take's a good reving to get it to act up. At about 60 mph it will start to run rough. I think that it might be a timing chain. If not that, what else might it be?
The reason that I am asking for him is that he does not have a computer.
Tom
The reason that I am asking for him is that he does not have a computer.
Tom
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maybe try a new ignition control box. I have seen that happen in the late 70's models of Broncos & F150's... My father's old 77 F150 did the same thing. Run great at low speeds, but would run like crap once you hit highway speeds...
You also may want to check the timing. It is possible that the vacumm advance is advancing the timing too far, and causing it. If it was the timing chain, it would run like crap 99% of the time...
You also may want to check the timing. It is possible that the vacumm advance is advancing the timing too far, and causing it. If it was the timing chain, it would run like crap 99% of the time...
Last edited by madmader; Jul 26, 2005 at 11:10 PM.
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Elder User
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From: Lolo Montana
According to the previous owner, all engine component's were new at the time of the engine being replaced. But I will have him check them.
madmader, I never thought about the ignition control box. But then again if I don't have a clue what it is to start with. I would think of it.
I shall pass this on to Dave. Thank you for your input.
Tom
madmader, I never thought about the ignition control box. But then again if I don't have a clue what it is to start with. I would think of it.
I shall pass this on to Dave. Thank you for your input.
Tom
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From: Central-Oklahoma
twolf tell your friend that just because the previous owner said the parts were new doesn't mean they can't have problems. i have purchased plenty of things new that wouldn't work right of the box or the longevity of the part didn't last as much as it should have.
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Senior User
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I know on the late 70's models, the control box mounted on the driver's side inner fenderwell. On an 85 though, I wouldn't have the slightest idea if Ford was still doing that, or if they moved it to the distributor, like a (bad word) Chevy...
Dano 50
it is on the drivers side fender in the engine compartment under a plastic shield.
Lead Driver
Joined: May 2004
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From: Abilene Kansas
yes i knew that, i ddint read the year... sorry... yea if its an 85 its prolly that grey recotangle mounted on the distributor (the module) and it requires a stupid special tool to get it out
MAtt
MAtt