Welcome Visitor! Please take a few seconds and matt2003
New Member
- Joined
- May 5, 2016
- Messages
- 5
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 2003
- Make / Model
- ford ranger
- Transmission
- Manual
When sitting for 5hrs or more my 3.0 liter fires up with a normal idle until the rpm drops to 700 where it shakes and sometimes sets a 306 and 316 code.The shitty idle only lasts a minute or two then it runs normal
-tach stays rock steady
-no loss of power once the idle comes back to normal
-no hesitation when at operating temp
-still seems a little rough warm but not sure if its just the normal shitty 3.0 idle
Replaced
-plugs
-wires
-coil
-pcv
-some bad vac lines
-Compression is good
-vacuum is good
-injector for #6 is getting the command to fire and sounds good woth the ultra sonic but have yet to bench test it or swap to theoutside fuel rail for 3,2,1 where i can get to it easier.The have pulled the plug over night to see if its a leaking injector and got the same issue in the morning.Plug looks normal.
- fuel pressure is good
I have had everything double checked by a very reputable shop who is also at a loss .Now hes sending me to some wizard that works in ford vehicles that the dealers cant fix.
I have worked and still work maintaining diesel trucks for 20yrs and i cant find the issue.I have bore scoped the SOB and all looks good. I swear the ultra sonic is picking up a vacuum leak in the bay but i lose it in the injector noise.The smoke machine finds nothing and the water test seems good to.The motor also sounds good on a clear flood start and the fuel trim seems fine .Putting it on the Veris yields nothing interesting.The issue seems ambient temp sensitive to a degree.This does not appear to be valve rescission
Any ideas would be appreciated thanks
-tach stays rock steady
-no loss of power once the idle comes back to normal
-no hesitation when at operating temp
-still seems a little rough warm but not sure if its just the normal shitty 3.0 idle
Replaced
-plugs
-wires
-coil
-pcv
-some bad vac lines
-Compression is good
-vacuum is good
-injector for #6 is getting the command to fire and sounds good woth the ultra sonic but have yet to bench test it or swap to theoutside fuel rail for 3,2,1 where i can get to it easier.The have pulled the plug over night to see if its a leaking injector and got the same issue in the morning.Plug looks normal.
- fuel pressure is good
I have had everything double checked by a very reputable shop who is also at a loss .Now hes sending me to some wizard that works in ford vehicles that the dealers cant fix.
I have worked and still work maintaining diesel trucks for 20yrs and i cant find the issue.I have bore scoped the SOB and all looks good. I swear the ultra sonic is picking up a vacuum leak in the bay but i lose it in the injector noise.The smoke machine finds nothing and the water test seems good to.The motor also sounds good on a clear flood start and the fuel trim seems fine .Putting it on the Veris yields nothing interesting.The issue seems ambient temp sensitive to a degree.This does not appear to be valve rescission
Any ideas would be appreciated thanks
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