p0193

[dfdsc68]

Searched the threads. Tried all the fixes no good

Replaced injectors with LDS. Started truck. Idled good for 20 seconds then a serious lope and cel. Limp mode once throttle is tapped it runs great then looesbagain back at idle. Any ideas. frp is plugged in as well as fuel pressure sensor.

Im at a loss

 

[Trimox]

Need a little more info: Year, motor (at least on the forum), mods done to truck.


What injectors from LDS? Not that those are the problem.

 

[dfdsc68]

Ahh i thought i did that. Sorry. 2002 lb7 4” exhaust stock motor. The thing runs like a top when its not idling. Goes back to idle and it knocked like an old tractor.

 

[Dukchunter]

Check bale connectors on the drivers side., I had the same thing when I did my headgaskets and started with a major lope. Was defaulting to max rail pressure. Ended up being a pin bent in the bale connectors.

Sent from my SM-G900V using Tapatalk

 

[dfdsc68]

Check bale connectors on the drivers side., I had the same thing when I did my headgaskets and started with a major lope. Was defaulting to max rail pressure. Ended up being a pin bent in the bale connectors.

Sent from my SM-G900V using Tapatalk

Which bale connecters. For the injectors?

 

[TheBac]

The two large electrical connectors on the drivers side valve cover....one of the pins could've pulled out slightly and isnt making a good connection, or you might not have snapped the levers down completely on one of them.

 

[dfdsc68]

Will a bad conection make it run rough only at idle?

 

[2004LB7]

If you loose connection to your pressure regulator then yes. The regulator will default to max psi. It wont be as apparent or seem like anything is wrong at higher rpms and load.

Check the connector at the fuel pressure regulator

 

[Brent@LDS]

I sent you an email, call me if you need help. Thanks

 

[dfdsc68]

Turned out to be the damn FRP sensor wire pulled out

 

[Brent@LDS]

Thank you for the update! Glad to hear you got it figured out.