Originally Posted by salad

Uhh engine size has nothing to do with it. The amount of fuel used during starting and idling is proportional to the displacement, but only for that engine. You've probably noticed that 4.0Ls use a LOT of fuel, no matter what they're doing. At an an idle 750 RPM, assuming the engine is warm enough to be in closed loop mode, you can expect to burn 2.4 gallons per hour. Assuming you're paying $3.60/gal, that's $8.64 an hour. How much are you getting paid?

Most engines use the same amount of fuel when starting as they would if they idled for 10 or 15 seconds. Don't believe me? See here for actual data that demonstrates this: http://www.iwilltry.org/b/projects/h...g-your-engine/

The reason you let diesels idle is so the turbocharger doesn't crack from heat stress.



Try this then: Turn your Jeep off when you get out. Enjoy the savings.

Originally Posted by sycoglitch

Its true. There has been tests actually done. People driving the same car and first staying idling at red lights and another tank of gas turning off at every red light. it was drastic savings but turning off at every red light saved gas. Like salad said, every car is different. I was next to a BMW 5 series 2 days ago and at every red light, as it turned green his car turned back on. This is a new feature for a reason.

Now can we please get back on topic and make a thread for gas consumption and savings cause this is the stuff that closes threads

Originally Posted by DieselD

When Mythbusters was a more popular show, I joined their forum and kept asking them to do an episode on idling vs. shutting off the engine. They never did it. Bastards.

Anyways, I'm bout to order WJ LCAs, NTK o2 Sensors (up and down), engine and transmission mounts. Then a new 2.5" cat converter. All for my 99

Later I'm going to go work on my 91 and see how much I get done,hopefully a lot fingers crossed. Lol

Originally Posted by DieselD

Ok so much for all that. Went to order parts, "insufficient funds", check my activity, some **** in yipsilanti, MI has been spending my cash all day, buffalo wild wings, home depot, scrub-a-hub car wash, ups store, bob evans, sunoco gas station. He ****ed up at the UPs store. The guy I called there suspended his package, I called the PD there to file a police report. I'm pissed.

On top of all that, my girlfriend has to work a 12hr shift so no wrenching time today, ****.

Originally Posted by DieselD

Ok so much for all that. Went to order parts, "insufficient funds", check my activity, some **** in yipsilanti, MI has been spending my cash all day, buffalo wild wings, home depot, scrub-a-hub car wash, ups store, bob evans, sunoco gas station. He ****ed up at the UPs store. The guy I called there suspended his package, I called the PD there to file a police report. I'm pissed.

On top of all that, my girlfriend has to work a 12hr shift so no wrenching time today, ****.

Originally Posted by Crashmurray1985

Bought another cherokee. Its a 1989 straight six thats fuel injected on 30x9" tires for $400. I have to go get the other motor that came with it and the stuff for a full tune up, new stereo, head gasket set, oil pan gasket and rod bearings for her today then let the fun begin

Originally Posted by cherokeelaredo'90

Think about it, ups and delivery trucks are always shut off when the guy goes to drop off a package. They must do it for a reason and of all people I'm sure they're the ones who have figured out the best ways to save on fuel.

Originally Posted by Prjo734

Ok so I was poking around the cherokee today trying to figure out why the heck my reverse light wont work...I checked the wire harness the bulbs fuses everything seems fine then poking around the engine bay I see that the nutral safty switch is out and wires spliced out of it .....wtf can this be why I dont have reverse lights????