The tps just tells it when to shift into overdrive and first gens do not have a lock up torque converter

Okay thanks for the clarification! Looks like the previous owner might not have known what he was talking about.. seeing as how the opinions on this thread are unanimous.. Thanks all! I will post pictures of my progress one step at a time!

Says he's new to diesels, admits to knowing nothing, still argues with people who do know.

Brilliant way to garner support, guy.

Not trying to be like that at all! It's just hard when you're new to a subject but you've got multiple people telling you different things, who all say they're right. Just gets a little confusing... I appreciate everyone's help.

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http://s1353.photobucket.com/user/daltonbnhs/media/Bgs4ZZECUAAy1hO_zpsa185cbb9.jpg.html
Had a little bit of fun today! I know it's not the best thing for the truck, but it was definitely a blast! She may be new, but she pulled that '04 cummins clear across the lot! :c:

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Turned the fuel pin a quarter turn and replaced the governor spring with a 3200 RPM... Really woke the truck up!

I dont want to dwell on the subject....(every one seems to be comenting on these subjects) but i do want to fill you in on the (tps) and lock up torque converter thing.

First the tps... throttle position sensor... is a variable voltage switch that tells the transmission when to shift into overdrive. It runs 1.5 volts at least at all times... once the throttle linkage gets into a certain position it manualy turns the swich untill it hits 5 volts wich ingages the overdrive solenoid. However, this stupid little thing goes out of adjistment or fails and you loose overdrive:(. The potentiometer is a great solution that allows you to set exactly when your truck is to hit overdrive by choosing when it hits 5 volts:)

Now to the lock up torque converter. If you have the a518 that comes from the factory in all 1st gens it is a non lock up... unless one was added on by the previous owner. Because the 2nd gens with the 47re were the first with a lock up converter.

What a concise description, I really appreciate the help! That clears things up a lot. Maybe you could clear this up for me, how would I figure out where to set the potentiometer? My friends fiddled with it so I'm not sure what to do about it! Thank you again, I appreciate it!

Well.... if it's working and your transmission is all good... I would recommend driving it down the road and turning it all the way to the left to have a starting point... drive your truck down a fairly vacant road, hold its speed at about 40mph, then start turning the potentiometer till overdrive kicks in.... from now on your truck should shift there!!

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