acreature
Member
- Joined
- Sep 25, 2018
- Messages
- 45
- Reaction score
- 0
- Points
- 6
- Location
- Kill Devil Hills
- Vehicle Year
- 1996
- Make / Model
- Ford
- Transmission
- Automatic
*FIXED* Fixer Upper trouble shooting
1996 Xtra Cab XLT 4x4 4.0l OHV
Bought as a fixxer upper, possible flip dirt cheap. A couple hundred bucks for a running and driving truck.
Needed all four leaf spring brackets replaced from rusting off, but runs and drives, with a rust free body and 4wd works, to boot.
Motor ran rough, but would keep running with a surging issue that would stall out occasionally, but fire right back up. No knocks. No smoke. No smells.
-Changed the plugs out, used ones showed normal wear; no oil or carbon.
-Checked vacuum leaks via starter fluid, none found. Problem Code 1504. Tested IAC, worked fine, but replaced anyhow. Ruled out failing vacuum inside of brake booster.
-MAF and TPS tested fine.
-Did one spray can of Seafoam. Didn't do a damn thing, so I then removed Throttle Body and Upper Intake, cleaned and replaced with new gaskets. TB & plenum had a lot of carbon buildup. Butterfly had obvious sticking because of carbon on backside. Lower intake showed buildup, but did not remove and clean.
-Fuel pressure tested at 28-30# at idle. No great change in pressure with gassing her to 3k - change was maybe 2-4#. No fuel pressure drop after shutdown, rose to low 30s# and held.
-EGR tested good: stumbled with vacuum applied and held the vacuum. (Not using a vacuum tester, mouth and hose tested, lol **EDIT, got my hands on a vacuum tool. Tested via same and EGR is good.
Runs smoother, albeit not perfect. No hesitation when accelerator applied, but left idling, will start surging. Gassing it a couple of times gets her to smooth out for a bit. Runs great on the road, just when idling.
I am leaning fuel pump/bad gas/fuel filter, but "feel" it would be constant rather than random, if so. I know, change the fuel filter and break open the old one... just haven't yet.
Thoughts.
1996 Xtra Cab XLT 4x4 4.0l OHV
Bought as a fixxer upper, possible flip dirt cheap. A couple hundred bucks for a running and driving truck.
Needed all four leaf spring brackets replaced from rusting off, but runs and drives, with a rust free body and 4wd works, to boot.
Motor ran rough, but would keep running with a surging issue that would stall out occasionally, but fire right back up. No knocks. No smoke. No smells.
-Changed the plugs out, used ones showed normal wear; no oil or carbon.
-Checked vacuum leaks via starter fluid, none found. Problem Code 1504. Tested IAC, worked fine, but replaced anyhow. Ruled out failing vacuum inside of brake booster.
-MAF and TPS tested fine.
-Did one spray can of Seafoam. Didn't do a damn thing, so I then removed Throttle Body and Upper Intake, cleaned and replaced with new gaskets. TB & plenum had a lot of carbon buildup. Butterfly had obvious sticking because of carbon on backside. Lower intake showed buildup, but did not remove and clean.
-Fuel pressure tested at 28-30# at idle. No great change in pressure with gassing her to 3k - change was maybe 2-4#. No fuel pressure drop after shutdown, rose to low 30s# and held.
-EGR tested good: stumbled with vacuum applied and held the vacuum. (Not using a vacuum tester, mouth and hose tested, lol **EDIT, got my hands on a vacuum tool. Tested via same and EGR is good.
Runs smoother, albeit not perfect. No hesitation when accelerator applied, but left idling, will start surging. Gassing it a couple of times gets her to smooth out for a bit. Runs great on the road, just when idling.
I am leaning fuel pump/bad gas/fuel filter, but "feel" it would be constant rather than random, if so. I know, change the fuel filter and break open the old one... just haven't yet.
Thoughts.
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