94 6.5td timing out of range
I put new rings/bearings in the motor about 150mi ago. Took it to the mechanic today to have the timing and tdco set (he specializes in diesels and has a tech 2) the problem he is encountering and cant figure out is no matter what direction he turns the pump he cant get it within +2/-2 to set the timing. He said it is erratic. The motor was reassembled correctly and the timing marks were lined up so it sounds like an electronic issue. Also i removed the line filter to the ip and the crank shaft sensor is new too. Any ideas what could be causing this?
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I have had an issue with the crankshaft position sensor and got this information from the site below, which I will be going over this weekend. It is probably an electrical issue and this diagnostic sheet I hope helps to go through. It may be of some help if the mechanic is having such issues.
Code P0335 - Crankshaft Position Sensor - Diesel Place : Chevrolet and GMC Diesel Truck Forums Hope it helps, Ron |
AC Delco ONLY for CPS replacement-BWD are usually bad right out of the box.
Also when you remove the noise filter on a 94 you need to fasten ferrite core from radio shack around each OS harness wire to absorb the RF noise generated by the OS so the ECM does not get interference. |
On this issue racer 55, the 6.5 TD 1998 gmc k series truck I drive will do two things. The first is when sitting at a light and it does a hick up and wants to lurch forward. Then if I start it up the engine makes a noise that is more like a tinny sloshing sound. If I shut it off and start it again it will run great for a few days and then it will do this again. When it is running bad it will smoke more, although gray and not black. This is when I get the P0335 crankshaft position sensor code.
Would I be best to replace the sensor or check it out as in the diagnostic to check ohm-age and voltage? |
You have the symptoms of a bad flight systems PMD.
You also have the CPS symptoms but check wiring first-the free things always need done first. |
Thanks for replying. I just put in a new PMD, which had a #5 resistor, with a #9 resister. I will be checking out the wiring of the CPS this week.
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