MPG lower than expected...

Katmandu · **Posted:** Sun May 20, 2007 6:46 am

DarbyWalters wrote:

jcphoto20 wrote:

WRONG, apparently i get a little better mileage than you. but im sure if i had a crd i would be getting well over 30.

WRONG...all things being equal...conditions/speed/driver the CRD will get better mileage than the 3.7L gasser. :wink:

My 05 Lib 3.7L gasser gets 22MPG consistently.

Katmandu · **Posted:** Sun May 20, 2007 6:51 am

jcphoto20 wrote:

has anyone tried a hotter thermostat? big rigs run those covers (in COLD weather ONLY!) over the grill to make them run hotter to get better mileage.

That is NOT why they run front covers.

Diesel engines by their very nature are COLD running engines. Big rigs use front covers to simply keep the coolant up to normal operating temperatures.

Katmandu · **Posted:** Sun May 20, 2007 6:54 am

jcphoto20 wrote:

thank you so much for your off topic social recommendations. i put my life on the line exactly like all of them did for over 15 years,

Why didn't you stay for 20 and get a Retirement ? :roll:

DarbyWalters · **Posted:** Sun May 20, 2007 9:02 am

Katmandu wrote:

DarbyWalters wrote:

jcphoto20 wrote:

WRONG, apparently i get a little better mileage than you. but im sure if i had a crd i would be getting well over 30.

WRONG...all things being equal...conditions/speed/driver the CRD will get better mileage than the 3.7L gasser. :wink:

My 05 Lib 3.7L gasser gets 22MPG consistently.

And if you drove a CRD the same way as you drive your 3.7L you would probably average 25 or better.

DarbyWalters · **Posted:** Sun May 20, 2007 9:03 am

Katmandu wrote:

jcphoto20 wrote:

has anyone tried a hotter thermostat? big rigs run those covers (in COLD weather ONLY!) over the grill to make them run hotter to get better mileage.

That is NOT why they run front covers.

Diesel engines by their very nature are COLD running engines. Big rigs use front covers to simply keep the coolant up to normal operating temperatures.

And one of the benefits of getting the temps up to normal operating temps is better mileage.

RFCRD · **Posted:** Sun May 20, 2007 10:15 am

tjkj2002 wrote:

Quote:

Well, I use the term "Series 92 Roulette" when it comes to bus engines. They make a lot of power, just don't stand too close to that 8V92 when it decides to grenade.

Had many run away on me,that really sucks.Had one go so bad it ran for 45 min with a rubber/metal plate over the turbo intake,all fuel line cut,and the fuel rods pushed in.The whole time I was standing on top of the engine(mounted in a Marine Corps LVS) until it started on fire.The fire fighters pumped water in the turbo for a full min before it blew itself into about 50 pieces :shock:

.

It's an unnerving feeling having to ride one to get it stopped. Had a mechanic that had a 6V92 runaway (fortunately not one of mine). Tried to choke it by shoving a pair of coveralls into the air intake. Just sucked them straight through & spit them out the exhaust. Couldn't get it stopped with the stuff you described so they took a pick-ax to the oil pan, then ran & let it scatter.

Joe Romas · **Posted:** Sun May 20, 2007 10:46 am

JCPHOTO20, I've owned many cars in the past 45 years and 20 or so have been diesels so I speak with a little experience with over 1,000,000 miles :shock:

My last jeep was a 99 4.0L XJ that I liked very much. I got 12 mpg for my normal driving. A year ago this coming Friday I got my 06 CRD and it has all of 7500 miles on it. I'm now a retired grandpa and my average is around 21.5 mpg for the same driving. Almost double.

My diesel experience indicates it takes 20k miles for a VW to reach optimum MPG's so a CRD I think 15k is right as others have stated. I've have gotten 2 tanks in a 99.5 jetta TDI of over 70 MPG

Now to the point of this. I've have never averaged close to EPA ratings on a gasoline vehicle and always averaged better on a diesel powered vehicle. So if your getting good mpg's on a gasser then you would get fantastic mpg's on a CRD :lol:

So if it's so important to you to get better mpg's then the next guy then why don't you have a CRD yet :?:

Back to CRD FUEL MILEAGE please. Gasser's with no diesel experience need to reply :lol:

jcphoto20 · **Joined:** Sun Nov 19, 2006 1:36 am **Posts:** 507

i preferred being self employed making nearly $500/hr during those 5 years. thanks for asking.

DnA Diesel · **Posted:** Mon May 21, 2007 10:17 am

Well, not sure if it's the D2 back in the pumps, but at least I'm now getting 12.3L/100 (18.9mpg US) all in the city [from an all-time worst of 16.5L/100 - 14.0mpg).

mk38tech · **Joined:** Thu Dec 08, 2011 7:25 pm **Posts:** 72

has anyone here ever even seen engine temps over 160? i mean what is the highest temp you have seen while on the road. no not a dirt road haha. i just highly doubt this little engine could get to 190 degrees without the mechanical fan. my 99 cummins, while its a completely different design, barely gets over 175 when idling for over an hour in 45 to 50 degree temps. that was with electric fans, set at 194 degrees. which is why i put them on the truck. i wanted it to stay warmer during the winter and colder when off road. so who has actually drove with the fan removed from their jeep? i think im going to try it for a week and see what happens. if i dont like it, or outside temps shoot up ill start looking for an electric replacement.

ChooChooman74 · **Posted:** Sat Mar 09, 2013 10:26 pm

mk38tech wrote:

has anyone here ever even seen engine temps over 160? i mean what is the highest temp you have seen while on the road. no not a dirt road haha. i just highly doubt this little engine could get to 190 degrees without the mechanical fan. my 99 cummins, while its a completely different design, barely gets over 175 when idling for over an hour in 45 to 50 degree temps. that was with electric fans, set at 194 degrees. which is why i put them on the truck. i wanted it to stay warmer during the winter and colder when off road. so who has actually drove with the fan removed from their jeep? i think im going to try it for a week and see what happens. if i dont like it, or outside temps shoot up ill start looking for an electric replacement.

I see 190s with the in hose. I will check Torque later to see what the stocker does.

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CATCRD · **Posted:** Sat Mar 09, 2013 10:41 pm

I see 185 with the in hose stat. With a small "worry hole" drilled it will drop slowly at idle.

MPG lower than expected...

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