o.k. code scanner still comes up with 335, 335, 122, 327, 122, 327 i don't know why 335 is coming up but it does 2 times in a row. i know my 95 is a little different then others that i find in the junk-yard. i don't know if it's got cal. emissions or what, but the guy with the snap-on scanner commented that it was a little different from what he had seen before. i appreciate the help and i hope i'm not throwing you guys a curve ball, Tim

 

The 335 apples to a DPFE sensor and say you have a back pressure problem in your exhaust system. Sometimes this one comes up if the test was done inside with a forced air ventilation system running in the building.
122 TP sensor less then minimum self-test value (0.2V).
327 would depend on the type EGR sensor you have but it is also less then minimum self-test value (0.2V).
Would need to know your calibration code off your drives door post to know what type systems you have on your truck.
You should check your 5 Volt reference voltage before you do anything for value (DC) and ripple (AC).

 

o.k. not cal emissions, disconnected the battery for about an hour, started the truck let it run, get warm shut it off started let it run for quite a while, then re-did the koeo and this is what the scanner says now 335, 565, 335, 565, 512, 512

 

I would still like to know what the calibration code is off your drives door post. This has nothing to do with California.

Calibration Code, in the photo the code is "4-54E-R10":
http://i54.photobucket.com/albums/g9...tionNumber.jpg


With the codes keep changing it is starting to look like a bad PCM Computer.

 

512 is not a KOEO code for your truck.
565 is a CANP SOL circuit failure.

 

5-52r-r00,

 

Ok it does look like you do have a DPFE sensor.
Your Parts List with the part and drawing numbers:
http://i54.photobucket.com/albums/g9.../PartsList.jpg

Your Info and it is a California setup truck:


Your vacuum diagram:


Your sticker:
http://i54.photobucket.com/albums/g9...00/F5AELTZ.gif

 

o.k. so what are the codes telling me to do, i think i have been looking and thinking to much about this thing, my mind keeps drawing a blank

 

At this point as I said above I would get out my DVM and:
"You should check your 5 Volt reference voltage before you do anything for value (DC 5.0V) and ripple (AC <0.05V)."

 

O.k. Not quite sure how to go about doing this

 

Back probe the Throttle Position Sensor (TPS) Connector (C1026) using the Gray wire with a Red stripe for the ground hooked to the Meter (Black wire). Hook the Meter red wire to the Brown wire with a White stripe at Connector (C1026, TPS).

With the key on use the DC and AC scales and check the DC volts and AC ripple.

 

thank you

 

o.k. dc is 4.9 or 4.98, can't get a ac at all

 

Sounds like the Ref. Voltage is OK then.

 

Did you ever buy a code scanner or are you counting flashes?