Need help with cummins fuel mileage - Pirate4x4.Com : 4x4 and Off-Road Forum

crewchief · 11-12-2005, 11:00 PM

My 2001 dodge is getting a average of 13.4 with no trailer. I have adjusted valves and it has a new lift pump. It has a 60 horse chip and cold air intake. Open exhaust and only 33 inch tires. I have no idea why it is dropping so far. This is also without a trailer. If ya dodge guys have any idea let me hear them. O and it only has 120,000 on it and a new tranny with a heavy duty converter.

mfs · 11-13-2005, 01:33 AM

i have a 2004 dodge diesel to and only get a average of 13mpg

jstarnes · 11-13-2005, 07:05 AM

clean your IAT sensor

make sure you dont have a boost leak

Eskimo · 11-13-2005, 08:16 AM

Very well could be a failing IP... are you getting high EGT's/low boost?

rokspydr · 11-13-2005, 09:55 AM

do you have a fuel pressure guage? how much boost are you making?

Marc

crewchief · 11-13-2005, 10:17 AM

Checked and don't have a boost leak. I don't have a fuel gauge but i am not running high egts. How would i check my IAT sensor. Hey starnes this is Mark Bergers spotter Garrett. How ya been doing?

jstarnes · 11-13-2005, 12:45 PM

Quote:

Originally Posted by crewchief

Checked and don't have a boost leak. I don't have a fuel gauge but i am not running high egts. How would i check my IAT sensor. Hey starnes this is Mark Bergers spotter Garrett. How ya been doing?

I thought that was you...

been doing great expecting the first kid in jan....

as far as the Iat gos you just take it out and clean it

http://www.dieseltruckresource.com/d...ght=IAT+sensor
http://www.dieseltruckresource.com/d...ght=IAT+sensor
http://www.dieseltruckresource.com/d...ght=IAT+sensor
http://www.dieseltruckresource.com/d...ght=IAT+sensor
http://www.dieseltruckresource.com/d...ght=IAT+sensor

that should get you started on finding out whats wrong

11-12-2005, 11:00 PM	#1 (permalink)
crewchief Rock God Join Date: Oct 2003 Member # 23545 Location: Osburn Idaho Posts: 1,889	Need help with cummins fuel mileage My 2001 dodge is getting a average of 13.4 with no trailer. I have adjusted valves and it has a new lift pump. It has a 60 horse chip and cold air intake. Open exhaust and only 33 inch tires. I have no idea why it is dropping so far. This is also without a trailer. If ya dodge guys have any idea let me hear them. O and it only has 120,000 on it and a new tranny with a heavy duty converter.

11-13-2005, 07:05 AM	#3 (permalink)
jstarnes Knee Grow Join Date: Jul 2002 Member # 12575 Location: It puts the lotion on its skin OR it gets the hose Posts: 1,750	clean your IAT sensor make sure you dont have a boost leak __________________ She said her name was Bambi, I said thats a coincidence darlin cause I was just thinkin about skining you like a deer then wearing your face like a mask as I do my little kooky dance

11-13-2005, 08:16 AM	#4 (permalink)
Eskimo Registered User Join Date: Mar 2002 Member # 10429 Location: Danville, PA Posts: 4,456	Very well could be a failing IP... are you getting high EGT's/low boost? __________________ Rich Q. FJ-40 Cruggy - tuned 5.3/4WS rockwells/linked/ORI's/42's

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11-13-2005, 01:33 AM	#2 (permalink)
mfs Registered User Join Date: Nov 2005 Member # 57311 Location: ramona,CA. Posts: 36	i have a 2004 dodge diesel to and only get a average of 13mpg

11-13-2005, 09:55 AM	#5 (permalink)
rokspydr Registered User Join Date: Aug 2003 Member # 21938 Location: nj Posts: 457	do you have a fuel pressure guage? how much boost are you making? Marc

11-13-2005, 10:17 AM	#6 (permalink)
crewchief Rock God Join Date: Oct 2003 Member # 23545 Location: Osburn Idaho Posts: 1,889	Checked and don't have a boost leak. I don't have a fuel gauge but i am not running high egts. How would i check my IAT sensor. Hey starnes this is Mark Bergers spotter Garrett. How ya been doing?