94 e-150 high idle and shifting problems
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Junior User
Joined: Mar 2013
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From: sedona az
94 e-150 high idle and shifting problems
im working on my father-inlaws van
94 e150 5.8l
it is idling high i would say in the 2000 range (no Tach) but every once in a while it settles down and idles normal
i cant find any more vacuum leaks
no check engine light
it also has a shifting problem ware it seems to be hunting gears
any suggestions
94 e150 5.8l
it is idling high i would say in the 2000 range (no Tach) but every once in a while it settles down and idles normal
i cant find any more vacuum leaks
no check engine light
it also has a shifting problem ware it seems to be hunting gears
any suggestions
Laughing Gas
Joined: Apr 2014
Posts: 1,100
Likes: 8
You will not always get a CEL on with some engine problems.
If you can get a scanner on it, see what codes it has stored in the PCM.
From what your describing, it sounds like your having some EGR problems.
If your having EGR problems, the PCM is over compensating the lean/rich mixture, that will also cause problems with the shifting points of the E4OD.
It was best that you searched out and fixed the vacuum leaks, that's the first steps to repairs.
From there, you can check the IAC, clean/replace and the TPS, replace.
But, there is no sense in throwing parts and $$ at it until you get the codes read.
If you can get a scanner on it, see what codes it has stored in the PCM.
From what your describing, it sounds like your having some EGR problems.
If your having EGR problems, the PCM is over compensating the lean/rich mixture, that will also cause problems with the shifting points of the E4OD.
It was best that you searched out and fixed the vacuum leaks, that's the first steps to repairs.
From there, you can check the IAC, clean/replace and the TPS, replace.
But, there is no sense in throwing parts and $$ at it until you get the codes read.
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