Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (
-   Troubleshooting/Problems (
-   -   Miles to empty (

slorhino 02-14-2013 10:46 AM

Miles to empty
yesterday i was driving home dash said i had 32 miles left then i turned it on this morning it said 18 stayed there until i turned GC off then it went back to 30 anyone else have this issue is this common can anyone point me in the right direction,

also im averaging 10.2 mpg(:mad:)considering i used to drive Honda that get 25-35 had an (oh sh*t) moment is this what most of the GC do or do you think i should change plugs air filter ? to get better mpg

Prestone 02-14-2013 11:06 AM

Re: Miles to empty
all chyrsler's I have ever driven that has the dte ( distance till empty) have added like 10-15 miles after I parked and got back back in later on. The only thing you going to be able to do to save your gas mileage is keep your foot off the gas, or trade it for a 4 cylinder.

slorhino 02-14-2013 11:22 AM

Re: Miles to empty
is 10.2 normal i'm not driving fast maybe 40-45 mph i just got this was wondering if i should change plugs and air filter anything that can get me better MPG

DannyVtCa 02-14-2013 12:24 PM

Re: Miles to empty
I don't think 10.2 is normal. Sounds like you need a tune up. For starters turn your key over three times quickly and see if you have any codes stored. Check you spark plug gaps, see if they are corroded. They should be .045 gap and the firing pin should be really square and not corroded. first time changing or pulling them will take you two hours, but after you get the hang out of it it will become second nature. Air filter is easy to check also, pop off the clips and see if it is really dirty. Throttle body is next, remove the huge plastic resonator, unclipping the air intake temp sensor. you can access the throttlebody. You don't even have to remove the throttlebody for inspection, push the blade open and see if it is caked with oil on back side. If it is just undo the four bolts and electrical connection and take it off. Use a rag and brake cleaner to wipe away the grime, being careful not to saturate it with too much cleaner. Next, pcv valve should be inspected. Pop it out and listen for a rattle when you shake it.

slorhino 02-14-2013 12:30 PM

Re: Miles to empty
thanks think i'm going to get it serviced what would be ballpark price for plugs throttle body service and check PCV VALVE

DannyVtCa 02-14-2013 12:30 PM

Re: Miles to empty
Beyond that, tranny and differential oils should be inspected and check for proper level and quality of oil. The torque converter oil level is good to check also. I believe it takes 1.9 quarts of 245/247/249 fluid. These oil levels are harder to check. Tranny oil and two filters should be changed from 30k-50k, differential oils 20-30k, and torque converter oil from 30-50k.

Proper tire pressure is also very important. Alignment could be off.

DannyVtCa 02-14-2013 12:30 PM

Re: Miles to empty
Do you have basic tools?

DannyVtCa 02-14-2013 12:33 PM

Re: Miles to empty
Pcv valve takes 1 minute to Change and inspect. The throttlebody takes five minutes to remove and 10 to clean. A can of brake cleaner is cheap and new pcv valve is 20-30 dollars.

DannyVtCa 02-14-2013 12:35 PM

Re: Miles to empty
Plugs would be an hour or two of dealer work... Probably looking at over 150. The tools needed to do the work are like $20 and plugs will run $3-5 apiece for 16.

slorhino 02-14-2013 12:35 PM

Re: Miles to empty
thanks for advice ill keep you posted

DannyVtCa 02-14-2013 12:36 PM

Re: Miles to empty
The dealer will say the throttlebody is not a piece that can be cleaned, they will gladly sell you a new one. But we have all been cleaning them for years without problem

DannyVtCa 02-14-2013 12:37 PM

Re: Miles to empty
Good luck

All times are GMT -5. The time now is 02:30 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community