Help! Transmission problems with 2003 F250

[bowtechhunter]

New set of spark plug wires fix my transmission problems one time.

[Arrow chucker]

Spark plugs and spark plug wires first.

[BigFoot]

Do a line pressure test. You'll need an oil pressure guage, about 4ft of 1/4 hose, and a 1/8 nbt adapter. Should be like $25. There's a port on the left side of your tyranny. Should be a 7/16 hex bolt. Unscrew it (fluid comes out) and quickly screw in the guage. Look up the pressures for each gear and compare them at park and 2k rpm. It could be a solenoid, range sensor, or pump going out. I assume you chanted filters with the flush?

[deerplanter]

Put your truck in gear with your foot on the brake give it gas. If it shudders then you have an ignition problem attend most likely a coil going out. There is a way to figure which one is bad before it throws a coffee but best to what for check engine light

[pallen]

Sounds like ignition coil pack

[Bro. Bill]

Put a new battery in it

[Wayno]

I changed the filter this morning and put the fluid back in it. I then drove it about 20 miles. I won't say that it is completely fixed, but it is much better than it was. For any of you that are thinking about doing a transmission flush, learn from my mistake. I'll never do it again.

[super_dave]

I changed the filter this morning and put the fluid back in it. I then drove it about 20 miles. I won't say that it is completely fixed, but it is much better than it was. For any of you that are thinking about doing a transmission flush, learn from my mistake. I'll never do it again.

Wayno, your problems are not over. The issue of the jerk is not your tranny. It's a misfire. I'm changing my plugs right now because my truck is doing the same exact thing. It's very common for a ford to miss and not throw a code. Just have someone run diagnostics while your driving and watch for a misfire under a load like your describing. When I finish my Gus today I'll let you know if it completely fixed my issues.

[super_dave]

New plugs completely solved my issue! No misses via the diagnostics machine at all!

[Wayno]

Changing the plugs is next on my list. I am told that the plugs on the Fords are difficult to get out and easy to break off. If they break, it then takes a special tool to get them out, and if any of the porcelain gets in the engine, it will ruin the engine. I don't think this will be a job I will do.

[Spoken0313]

Changing the plugs is next on my list. I am told that the plugs on the Fords are difficult to get out and easy to break off. If they break, it then takes a special tool to get them out, and if any of the porcelain gets in the engine, it will ruin the engine. I don't think this will be a job I will do.

That's on the 3 valve 5.4, never heard them being difficult and breaking on any of the others

[Wayno]

Super Dave, I just read your other post. I didn't see it before my post about breaking the plugs. Sorry, but I couldn't help but laugh. I'm sure there was no laughing on your end.

[super_dave]

Other than trying to find a parts store with the proper tool, it really wasn't all that bad. I was at my brothers house and he is a dang good mechanic with all the needed extensions and wobble sockets and several years experience. I'm glad to get it over with and not have that horrible jerk under load anymore.

[BIGTERRY75]

Good ro hear u got it solved

[Buckrider]

Sounds like it just needs a basic tune up and I don't thing it is a bad coil pack yet as they usually make it run bad all the time just worse under a load