94 3.0 idle issue
#1
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94 3.0 idle issue
Hi,I recently replaced a 3.0 in my truck,at first it ran fine except it wouldn't idle when hot,, in the process of troubleshooting that i swapped my injectors out, then it started but ran rough,figured out 3 of the injectors were not delivering fuel,so i pulled them out and replaced them with injectors from the old motor which ran fine(even at 340,000 miles i should have left it in),now when i try to start it ,it will fire ,rev up and die,,if i keep my foot on the gas and feather it it will run but as soon as i let off dies. Thoughts?
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#4
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To the best of my knowledge they are,went off diagrams from here.it was running,,˟˟˟˟ty but running now all the sudden this,i dont get what could have triggered it
#5
I don't think it should die even if some cylinders aren't firing due to faulty injectors You can try to take off one coil per time and see if anything changes.
In any cases , I would start from rechecking the vacuum lines. Even two swapped can make it run like crap. I spent hrs looking for issues just to find out had reconnected something wrong. Many times....
In any cases , I would start from rechecking the vacuum lines. Even two swapped can make it run like crap. I spent hrs looking for issues just to find out had reconnected something wrong. Many times....
Last edited by Killemall; 01-28-2019 at 08:30 PM.
#7
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Join Date: Jul 2018
Location: Cincinnati, OH
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I had a similar issue when I deleted my EGR. Did you replace the single bolt on the front left of the intake manifold? I don't remember what it holds, but it's easy to forget to put back. Replacing this solved all of my extremely rough idling issues. Good luck!
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