I searched and searched, but could not find the maximum oil pressure of the CRD........maximum as in cold startup. I plan to install an oil pressure / voltage combination gauge in our 2006 CRD. Two sending units are available 0-100 and 0-150 psig. Of course the 0-150 is more expensive that the 0-100.

Thanks

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2006 CRD Sport
GDE FT ECO tune, GDE TCM ECO tune, ARP studs, HDS-001 203F T-Stat, 3.7L nylon fan & Hayden 2905 clutch, Carter P76148M in-tank pump, Racor 245R122 filter head & 2 micron R25S fuel filter, Provent 200, Samcos, Fumoto F-102, Litens 920834A de-coupler, PML rear diff cover, OEM trans pan with welded in bung, JBA UCAs, full skids.

Can't say 100% on the VM, but most engines have pressure reliefs set at 80psi.

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05 Liberty Limited CRD, converted to KPA 2863 ball bearing and billet turbo, 50hp injectorsl, complete egr delete, cooling fan delete, weeks intake kit, cummins in tank lift pump, ARP studs, 3" turbo back exhaust, samcos, etecno plugs, GDE trans tune, custom GDE engine tune.

Mine will easily peg my 80psi gauge on a cold start. I believe it will be over 100.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

100 + psi is an awful lot of pressure. Usually you want to see 10 psi per 1000 RPMs.

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2006 Jeep Liberty CRD, SAMCO CAC Hoses, GDE Eco Tune

I'm only talking about a cold start when the oil is very thick. Normally with hot oil I have 35psi at 2000rpm. Idle is 17psi.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

Idle at 17 sounds right from the main gallery that I had my probe in. Cold start could be over 100, the gauge didn't read that high and pegged.


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Over 225 CRDs currently driving with my valves, timing belt, rockers, or ARP Studs.
Bad noises = REALLY bad things.

So, a 150 psi gauge is a good idea? It seems like a 120 would be a good option if available.

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2006 Jeep Liberty CRD, SAMCO CAC Hoses, GDE Eco Tune

I will order the 0-150 psig sending unit. The gauge is digital. Thanks.

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2006 CRD Sport
GDE FT ECO tune, GDE TCM ECO tune, ARP studs, HDS-001 203F T-Stat, 3.7L nylon fan & Hayden 2905 clutch, Carter P76148M in-tank pump, Racor 245R122 filter head & 2 micron R25S fuel filter, Provent 200, Samcos, Fumoto F-102, Litens 920834A de-coupler, PML rear diff cover, OEM trans pan with welded in bung, JBA UCAs, full skids.