Welcome Visitor! Please take a few seconds and Matt300ZXT
New Member
- Joined
- Jan 9, 2019
- Messages
- 10
- Reaction score
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- Location
- Chattanooga, TN
- Vehicle Year
- 1997
- Make / Model
- Ford
- Transmission
- Automatic
Ok, I finally defeated the 4.0 OHV motor in regards to doing the upper intake plenum gaskets, as well as the fuel rail gasket even though it showed no evidence of coming apart and being sucked in towards the lower intake manifold, but I replaced them anyways.
Soooooo after following the guides, torquing everything down in 2 stages in the proper order, and finally getting all the hoses and sensors hooked back in (only broke 2 brittle old hoses that I repaired), she finally started back up after the fuel system finally reprimed itself. Luckily, there wasn't fuel spraying everywhere so the new injector o-rings worked out just fine and the injectors seated.
So, the engine hasn't been running long enough for any CELs to come back on if there is still indeed an issue but it is still doing one of the same things it was doing before.
When the issue first started a few weeks ago after doing the thermostat/coolant temp sensor/coolant job to fix a code for that, it started idling rough on the drive home. I ran codes on it when I got home and the P0171 and P0174 showed up. I sprayed carb cleaner and the only place it affected the idle was the front of the plastic intake. Aside from rough idling, sometimes worse than others, in reverse the truck wanted to stall or run reaaaallllllly rough. It'd only be in reverse a few seconds at a time, but it was still pretty bad, and long enough for it to stall sometimes. It is still doing that, but not quite as bad as it was before I did this work.
I'll have to drive it a few days to let it run through some heat cycles to see if any codes come back, but it is still doing that thing in reverse. I'm curious if maybe something to do with the EGR system was also causing an issue and needs to be replaced.
Soooooo after following the guides, torquing everything down in 2 stages in the proper order, and finally getting all the hoses and sensors hooked back in (only broke 2 brittle old hoses that I repaired), she finally started back up after the fuel system finally reprimed itself. Luckily, there wasn't fuel spraying everywhere so the new injector o-rings worked out just fine and the injectors seated.
So, the engine hasn't been running long enough for any CELs to come back on if there is still indeed an issue but it is still doing one of the same things it was doing before.
When the issue first started a few weeks ago after doing the thermostat/coolant temp sensor/coolant job to fix a code for that, it started idling rough on the drive home. I ran codes on it when I got home and the P0171 and P0174 showed up. I sprayed carb cleaner and the only place it affected the idle was the front of the plastic intake. Aside from rough idling, sometimes worse than others, in reverse the truck wanted to stall or run reaaaallllllly rough. It'd only be in reverse a few seconds at a time, but it was still pretty bad, and long enough for it to stall sometimes. It is still doing that, but not quite as bad as it was before I did this work.
I'll have to drive it a few days to let it run through some heat cycles to see if any codes come back, but it is still doing that thing in reverse. I'm curious if maybe something to do with the EGR system was also causing an issue and needs to be replaced.
