The CRD does have more draw than the V6 gas, mainly due to the 17.5 to 1 compression ratio. If recalling correctly, the starter motor is a 2.2kw.

_________________
Providers of wholly developed aftermarket solutions for the KJ CRD.
(248) 977 - 9531

Thank you! + Jeep states use a battery that has min of 800 Cold Cranking Amps.

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI

Then why did they come with one rated less then 700cca's?


And yes the 2.8 will draw more amps then a 3.7 but not near as much as you think.Heck my old Cutlass with 13.5:1 cranked just fine at 0 degrees with a 500cca battery and 10w40 oil.

They are for cars that only require 700 CCA. Most do not require 800 CCA. A good parts store will not even sell you a battery without the required CCA for your CRD. Due to it will void the battery warranty.

In a Diesel your battery is everything! That is if you have a Diesel? ( I"m Done! frustration is setting in)

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI

Grew up with them and worked on them professionally for 10 years,much bigger ones then you see on the road today even in a semi-truck.

For a cold diesel start, a battery with CCAs to spare is only prudent. On a cold day without a plug-in (away from home) you need to have the necessary CCA for longer or mutliple attempts to start that are typically not needed on a gasoline engine that is in good working order. You never know when a glow plug may quit and you may be starting initially on 3 cylinders till the 4th fires properly. You never know when even your winterized fuel may start to gel a little and pump more slowly. Prudence would suggest going above the specified CCA before going below it.

Ditto that. I've always been a believer in big batteries in diesels, just for those resons you specified. My CRD had a bad alternator decoupler when I got it. I replaced the entire alternator. I got a new battery while I was at it. The original Optima still worked in the '05, which was impressive. It was cranking a little slow on these cold Ohio mornings. I replaced it with the Advanced Auto gold battery. It starts great now, with a 3 year battery warranty.

Billy

Billy...that's the same battery I have. Advance Auto parts Autocraft Gold P/N 34-2 800CCA & 1000CCA at 32 degrees.

Good Battery!

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI