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'86 Ford 2.9 litre hwy stumble



 
 
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Old January 28th 20, 04:24 AM posted to rec.autos.tech
Scott Dorsey
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Default '86 Ford 2.9 litre hwy stumble

> wrote:
>My 87 Ford Ranger has a continual issue with stumbling, bucking, power loss=
> while driving at any speed, when its cold it doesn't seem to do it, althou=
>gh at startup there seems to be a rough and erratic idle most of the time a=
>nd trying to accelerate doesn't work when its cold. After it warms up duri=
>ng driving trying to accelerate will oftentimes result in the bucking, powe=
>r loss, acting like it isn't getting any fuel. I'm leaning towards a Throt=
>tle Position Sensor (TPS), or the computer (EEC). =20


If the TPS is bad and it's dropped into a limp-home mode, there will be an
OBD-I code. See what codes you get first. Then check with a timing light.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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