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- Joined
- Oct 31, 2018
- Messages
- 7,825
- City
- Dirtman's Basement
- Vehicle Year
- 1988
- Transmission
- Manual
- My credo
- Give 'yer balls a tug. Fight me.
Cleaning up and cross posting tailgate rant for some help. Having a power issue with my 2011 XLT 4x4, manual trans.
First 10 mins it's running feels what I would imagine it should feel like. Then gutless pos dog after 10-15 mins that gets reeeealy gutless after about an hour of driving.
Has an occasional misfire, but not enough to set a code. On a typical 30-60min drive, I'll see a few on for scan. Thought I felt one a few days after purchase, and has been doing it ever since. No specific time, engine load, or driving style when it happens.
So far have replaced plugs with oem Motorcraft, wires also oem, coil pack (accel), old one looked swelled and puffy in a few spots (Is that a thing?), Maf sensor with Hitachi oem.
Modifications done are zip tied throttle cable, k and n drop in air filter (sue me), air box restrictor removed. Have reset computer multiple times. I think. Idk how TF these terminator machines work. Have reset adaptations in fors an, but it won't let me completely reset the pcm. Did battery reset where shorted positive battery wire to negative terminal when disconnected, then let it sit and idle blah blah blah for module re-learn.
Other weird crap it's doing is every now and then it won't start first time from dead cold. Longer it sits harder it is to start. Took three tries the other day in heated garage after sitting for 24+ hours.
Ran jectron and intake valve cleaner. Perked up a few days after valve cleaner then back to awesome the first mins then absolute ****ing dog. Running stock 2004 fx4 16" rims and tires.
Now getting ready to do upstream O2s. They look funky on a scatter plot. Don't know, I'm used to looking at a wideband. ??
No codes/dash lights. Had constant lean code and p1000 when I had an aem intake on it. Maf housing is wrong size on that, but not by much. Took it back off until I figure out the power issue.
Slamming my head against a wall. I know very little about fuel injection in anything post-2004.
First 10 mins it's running feels what I would imagine it should feel like. Then gutless pos dog after 10-15 mins that gets reeeealy gutless after about an hour of driving.
Has an occasional misfire, but not enough to set a code. On a typical 30-60min drive, I'll see a few on for scan. Thought I felt one a few days after purchase, and has been doing it ever since. No specific time, engine load, or driving style when it happens.
So far have replaced plugs with oem Motorcraft, wires also oem, coil pack (accel), old one looked swelled and puffy in a few spots (Is that a thing?), Maf sensor with Hitachi oem.
Modifications done are zip tied throttle cable, k and n drop in air filter (sue me), air box restrictor removed. Have reset computer multiple times. I think. Idk how TF these terminator machines work. Have reset adaptations in fors an, but it won't let me completely reset the pcm. Did battery reset where shorted positive battery wire to negative terminal when disconnected, then let it sit and idle blah blah blah for module re-learn.
Other weird crap it's doing is every now and then it won't start first time from dead cold. Longer it sits harder it is to start. Took three tries the other day in heated garage after sitting for 24+ hours.
Ran jectron and intake valve cleaner. Perked up a few days after valve cleaner then back to awesome the first mins then absolute ****ing dog. Running stock 2004 fx4 16" rims and tires.
Now getting ready to do upstream O2s. They look funky on a scatter plot. Don't know, I'm used to looking at a wideband. ??
No codes/dash lights. Had constant lean code and p1000 when I had an aem intake on it. Maf housing is wrong size on that, but not by much. Took it back off until I figure out the power issue.
Slamming my head against a wall. I know very little about fuel injection in anything post-2004.
