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			Replacing the TPS and Fixing Coil Error Code on a 2003 Mercury Mountaineer, V8 4.6 Engine.
We bought the Mountaineer 2 weeks ago to replace the wrecked Jeep Grand Cherokee. After a couple of days the Service Engine Soon light came on. Fair chance the seller cleared the codes before selling it.
So, ordered a $20 OBDII Code Reader from Amazon and got the following codes:
P1120 : Throttle Position Sensor Out of Range
P0355: Ignition Coil “E” Primary/Secondary Circuit
Coil E is for Cylinder 5, or the drivers side most front one.
Parts were ordered, full list below and I decided to take video of the install.
The set of Coils and Plugs from Walmart did not fit properly and will be returned. I did discover a loose connector on Coil E and got the debris out so it now snaps solidly in place. Hopefully that fixes the P0355 error.
The TPS replacement was completed, but I'm pretty sure I got a cheap knockoff and not a real Dephi part from Amazon.
Parts List with Links:
Hood Lift Support Shock Struts $16: https://amzn.to/3YMPpf3
MOTOPOWER MP69033 Car OBD2 Scanner $20: https://amzn.to/3qwgwy7
Delphi SS10387 Throttle Position Sensor (PROBABLY FAKE) $32: https://amzn.to/3QzEqmU
Permatex 22058 Dielectric Grease $8: https://amzn.to/3L0KpOf
Permatex 81343 Anti-Seize Lubricant $5: https://amzn.to/3YB0TSv
Spark Gap Gauge $3: https://amzn.to/45c4rNO
Not linking the wrong coils from Walmart, cuz that won't help you.
If you found this video helpful, and buy stuff on Amazon anyways, then I'd appreciate you using any of the links above for your next purchase.
It will cost you nothing extra, and as an Amazon Associate, I'll earn a few cents as a commission on your purchase, even if you buy something else.
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