Archived p1689, did I destroy my Injector Pump

[rkressg]

P1689 No Communication Between ECM and Injection Pump Module



Data link circuit failure between ECM and fuel injection pump. Low power, engine derated, or engine stops. (from 01 Service Manual)



OK, I get this code and a misfire when the truck produces more than 20 psi in boost. The engine also feels like it is trying to defuel.

Any input would help. Did I blow my VP44?:{

Could it be my K&N, the oil from the filter can damage the MAP sensor, but the MAP is bypassed because of the TST Powermax 3.

Any thoughts on what would cause the misfire would be much appreciated. The truck runs great until it exceds 20 psi, then misfire.

Any help please,

Rich

 

[rkressg]

I ended up replacing my lift pump. That fixed the problem so far, hopfully I did not damage my Injector Pump.



You can pull this thread

Thanks

-Rich