Check engine light

[Rhummer]

My check engine light comes on around 1600rpm and stays on all throughout the gears. When the rpm's drop below 1600 it goes out. I had it coded and they said code 35 and 36. I was told it was the pmd. I replaced it with a new D-tech and it seemed to solve the problem. I then put a the original "4" resistor in the new pmd and the check engine problem returned. Is it possible for the resistor prematurely failed the pmd?

any help is appreciated

Thanks

[JohnC]

Unlikely. Did you check the codes again? Does the D-tech have an internal resistor? If it does, adding the #4 may have thrown it out of range. It would set a different code, though.


35 an 36 are often bad connections or a sticky fuel solenoid. You might try a heavy dose of a good quality fuel conditioner to see if you can free it up.

[Rhummer]

What fuel conditioner do you suggest? I have been using a Diesel 911 for the cold weather.