My A/C is not working, the system is empty. The evaporator core was wet on the passenger side, which I contributed to the leaking intercooler and oil overfill ( I drained a lot of oul from the I/C when I had it removed). However, it seems like the evaporator is leaking as well, I will confirm with the dye soon.

The issue is that the radiator fan (the electric one) seems to come on as soon as the engine is running, and never shuts off. From the diagram, it looks like the ECM is controlling two relays that run it at the low or high speeds. I have not tested the relays to make sure that they are not stuck, but what else could be causing this? What tells the ECM to turn the fan on?

Next, I have a squekie noise when the engine is running. I suspect that one or both of the serpentine belt idlers are bad ( did not replace them when I did the TB), so I will do that. However, I noticed that my serpentine belt tensioner is jumping quite a bit when idling, I have not noticed this before on any other engine I have worked on, but I never worked on this kind of CRD before either.

I know that the CRD engine will vibrate more then the gas engine would, but when idling, I can feel the vibration shaking the truck a little. Are my mounts bad and how would I check?

Overall, I am dealing with smaller stuff now, but nothing major since the rockers/head gasket/TB change about 1500 miles ago. Took it to Detroit from Chicago, and back last week, and was surprised on how nice it rides. 70-75 average, about 23.5 MPG. Keith, we'll be doing business very soon.

Squeak and jumping tensioner are usually alternator pulley. A lot of info on here on that. I just replaced the whole alternator myself.

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05 CRD Sport Dark Kahki

RRO: Adventure Rack/Rails ** MOPAR: Skids/Renny Flares & 255/75r17 (32.1) BFG M/T on JK wheels ** ARB: Bumper/IPF lights/790/948/shocks ** GDE: TCM/Hot Tune ** ROCKLIZARD: Super Sliders/Komodo Bumper

My Build Thread
US Army Infantry

X2

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#1 2006 Silver CRD Limited, flipped spare tire, ASFIR skids, GDE TCM & Ecotune, blue SAMCOs, 5V glow plugs, Rotella T6, intank fuel pump, Gen2 fuel head, new crank sensor, JBA 2.5 in silver package, Provent and ARB bumper
#2 2006 Metallic Green Limited; currently DOA
#3 2005 Silver project; currently not running...don't judge me

Look for the telltale red dust on the alternator. At this age and miles, rebuilt is way to go.

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP