Why did My 2000 4.7l drop from 17mpg to 9 mpg when installing in a 2001 Durango

Asked by Apr 10, 2012 at 06:11 AM about the 2001 Dodge Durango SLT 4WD

Question type: Maintenance & Repair

Ok if this helps I totaled my 2000 Durango so I bought an 01 with blown motor to swap mine outta my 00 with. After
installed I noticed my 17 mpg motor only getting 9 with n check engine light. Other things I noticed but may b
irrelevant is I had to use the 01 oxygen sensors cause the plugs where different and had to use the 01 computer
cause my 00 one wouldn't operate the gauges in the 01 truck. The computers look completely different but is the
ignition and fuel programming still the same. Does running 01 computer on a 2000 motor cause fuel mixture to be
incorrect. Does the 02 sensors read different as I heard the 01 intake is 68mm as opposed to the 65 on the 2000.
It's definitely running rich as u almost pass out if stopped for any length of time with the window down. Have not
checked fuel pressure, or ran ohms on o2s or operation of the PCv

2 Answers

1,215

The only people qualified to answer your questions are the engineers that designed them. Call them and ask.

6,835

You must when doing an engine swap year to year chck the wiring harness and computer for differences. Had a muffler shop do one near me and brought it in would not stay running, 01-02 was different wiring harness pinouts. Unless you have the wiring harness and the pcm to the new engine out of the wrecked car you may be chasing wires to correct the problem for a while.

Your Answer

Add photo

Related Questions

Search Dodge Durango Questions

Dodge Durango Experts

#1 Sigurður Guðmundsson
Sigurður Guðmundsson
Reputation 2,640
#2 Breanskis
Breanskis
Reputation 1,560
#3 tenspeed
tenspeed
Reputation 820
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,067 Great Deals out of 72,861 listings starting at $1,200
Used Ford Explorer
905 Great Deals out of 63,788 listings starting at $799
Used Chevrolet Tahoe
638 Great Deals out of 32,888 listings starting at $1,500
Used GMC Yukon
405 Great Deals out of 20,356 listings starting at $1,495
Used Ford F-150
2,116 Great Deals out of 192,318 listings starting at $290
Used Ford Expedition
397 Great Deals out of 23,859 listings starting at $1,500
Used Dodge Ram 1500
402 Great Deals out of 10,916 listings starting at $1,000
Used Toyota 4Runner
231 Great Deals out of 19,232 listings starting at $2,195
Used Toyota Highlander
373 Great Deals out of 25,719 listings starting at $2,799

Used Cars For Sale

2018 Dodge Durango For Sale
27 listings starting at $32,085
2017 Dodge Durango For Sale
25 Great Deals out of 11,671 listings starting at $22,885
2016 Dodge Durango For Sale
33 Great Deals out of 1,422 listings starting at $20,999
2015 Dodge Durango For Sale
29 Great Deals out of 1,144 listings starting at $18,485
2014 Dodge Durango For Sale
43 Great Deals out of 1,750 listings starting at $14,597

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.