CRD Throttle Issue

[ddvman]

My 2006 Liberty CRD hadn't been started or run for eight months. It started right up and great. I left it run until it came up to temperature. I then took for a 2-3 mile drive. After about a quarter of the trip, I noticed that the car was accelerating to 2,000 rpms every time I just touched the accelerator pedal. It would drop down to idle when I touched the brake pedal. I then noticed that the red light was on the instrument cluster. I finished my trip and parked it and turned off the ignition. When I restarted it after a few minutes and the engine rpms spiked, so I turned it off immediately. Started it again with the same results. Not many CRDs in this area, so I hate to have it towed to several garages. Can I dig into the problem and remedy it myself?

 

[seafish]

Engine rpm's spiking without throttle input is indicative of oil leaking into the intake manifold from somewhere.

It is CRUCIAL to note that such a situation in a diesel can result in a complete runaway even with the key off and if left unchecked RPS will l pass redline and will destroy the engine.

Search Youtube for "Diesel runaway" if you want to see the carnage

The ONLY way to stop a runaway is to COMPLETELY block off the air intake going to the turbo either with a physical stop block that seals the intake or with a CO2 based fire extinguisher that will displace and replace the oxygen.

PLEASE NOTE that I am nor saying this is definitely what is wrong with your CRD or is absolutely what will happen if you continue to start it, but that the runaway scenario seems possible based on your uncontrolled rpm symptoms and that you MUST to be prepared to physically block ALL airflow to the intake in order to stop the runaway if you continue to try to assess the problem yourself!!!

That said, hopefully someone else here will chime in with also something more useful … like where to search for the oil leaking into the intake.

Just my .02