I checked the codes on my 1995 F150 and the come up as follows..

1 super quick blink followed by...

1 1 1 1 1 1 I assume this is 33

There is a long pause and some random single blinks and then the other continuos codes start.

Mine read 668668

I checked online to find out what 33 means and I found several anwers so I don't know which one is correct.
One site says 111 111 is system ok and no codes present
One site says 111 111 is 33 and its the EGR
One site says 111 111 is 33 and its the TPS

My truck has a stumble at idle and accelerating up to around 1500 rpms. After that its perfect. It occasionally stalls 40 seconds after a cold start.

I just need to know what to replace. Thanks!

 

'95 has 3 digit codes, so you got 111, 111- system pass.

 

Your '95 uses three digit codes. What you actually got is '333', no codes present, although I'm not absolutely clear from your post which series of codes this was. Sounds like it was clear on KOER, and a 668 on continuous.

 

Well I guess thats good and bad. Its good because I have no codes. Its bad because my truck has a random stumble at idle and a random hesitation when accelerating from idle until I get to around 2000rpms. Then its perfect. It doesn't hesitate all the time when accelerating but it always stumbles (almost sounds like a miss) when idling.

 

From what I found online the continuous code 668 that I got has something to do with the transmission sensor.
That leads me to another question. My truck has a little overdrive button on the gear selector stalk. When I depress it nothing seems to happen, no light lights up (I am not sure if one is supposed to).
There isn't much info on this code or the sensor or what the sensor is for and what happens if its not working.

 

Transmision Oil Temperature sensor is/was low or grounded. The light for O/D is on the stalk for the shifter. If it does not light up and display "off" the switch may be bad. Most parts stores have these.

 

Most likely a tune up type issue, for the missing.

 

I already replaced everything.
Plugs
Cap
Rotor
PCV Valve
Air Filter
Oil and Filter
Cleaned IACV
Fuel Filter
Serpentine belt
Belt Tensioner
seafoamed intake
I didn't replace the spark plug wires but they were in excellent condition.
The truck is throwing no codes.

 

Maybe not as excellent as you think. Plus, even new wires will misfire if you don't route them properly.

 

I didn't change the routing. They are installed exactly like the OEM right down to the original clips. I didn't replace the wires though because they looked fine. Probably should have!

Curious though.. if one or some of the wires were bad and they were causing a random misfire wouldn't they throw a code??