86 Ranger 2.9 with Oxygen sensor problems
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86 Ranger 2.9 with Oxygen sensor problems
A friend of mine has a 86 ranger 4x4 with the 2.9 engine.
He has been having trouble with it loading up.
He said he found an Oxygen sensor but nothing to hook it up to.
He said it was inplace but no wires to connect to it.
Just wondering if all of them were like that or did some one change something on his.
He has been having trouble with it loading up.
He said he found an Oxygen sensor but nothing to hook it up to.
He said it was inplace but no wires to connect to it.
Just wondering if all of them were like that or did some one change something on his.
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Joined: Dec 2005
Posts: 361
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From: Lake Almanor
If the truck has EFI, there should be a 3 or 4 wire connector coming out of the loom near where the TFI module connects. It may have gotten melted by the exhaust manifold.
It may be prudent to open up those looms that go to the rear on the right side of your engine to see if thats what happened.
Loading up is one symptom of a bad or disconnected O2 sensor. Pulling codes may help, but if it's not connected there should be some wire stubs or something near.
Good luck
It may be prudent to open up those looms that go to the rear on the right side of your engine to see if thats what happened.
Loading up is one symptom of a bad or disconnected O2 sensor. Pulling codes may help, but if it's not connected there should be some wire stubs or something near.
Good luck
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He called his self looking in the wire loom for some extra but found nothing.
He never really had much trouble until his computer went south and he bought a new one. It has just gotten worse with time.
He never really had much trouble until his computer went south and he bought a new one. It has just gotten worse with time.
Post Fiend
Joined: Dec 2001
Posts: 10,562
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From: South Jersey
My 89 had o/bk, dg/p & bk/lg wires going to it. They ran in a bad place behind the engine, was easy to get caught between the engine and tranny if you were putting them back in the truck. Sorry I don't recall where they originated.
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I talked to my friend today and he got to digging around on top of the tranny under some mud and found the connecter.
He said it really helped it start better.
Thanks for all the help, maybe I can return the favor someday.
He said it really helped it start better.
Thanks for all the help, maybe I can return the favor someday.
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