2004 Explorer 4.0 sohc motor swap

[dlclayton426]

Hey guys im new to this whole forum thing but i am at my whits end with this truck so i recently swaped the motor out in my explorer the old one had timing chain failure so i bought one from a junk yard and installed it started it up was running pretty good had a small tremor so i tuned it up (plugs wires, fuel filter, air filter) with no change then finally the check engine light came on and i had p0300, p0301, p0302, p0303, p0316, p0174 p0401 i have checked for vacuum leaks sprayed entire intake with brake cleaner with no luck finding a leak anywhere any help would be greatly appricated also bank 2 fuel trim is pegged at 25 on idle and bank 1 is around negitive 12 or so i cant figure out what would make one side of the engine run rich and the other side lean??????

 

[Rick]

I hate to be the bearer of bad news, but that motor may also have a bad timing chain. Check this thread.

P0172, P0174, P0300, P0301-3, P0316 after summer vacation

Bought a 2005 Ford Explorer with 117000 six months ago. Passed CO emissions test, drove well, etc. Moved to CA last semester for graduate school, didn't transfer title over (used the student card for a while). This summer I spent in Florida, car sat for 2-3 months. Had my landlord run it once...

www.explorerforum.com

 

[imp]

I hate to be the bearer of bad news, but that motor may also have a bad timing chain. Check this thread.

P0172, P0174, P0300, P0301-3, P0316 after summer vacation

Bought a 2005 Ford Explorer with 117000 six months ago. Passed CO emissions test, drove well, etc. Moved to CA last semester for graduate school, didn't transfer title over (used the student card for a while). This summer I spent in Florida, car sat for 2-3 months. Had my landlord run it once...

www.explorerforum.com

To go to the trouble of installing a junk-yard engine whose operating condition is unknown (especially one prone to timing chain failure) is akin to madness. I would contact the seller and negotiate a return of either my money or another engine which can be run for inspection.