horrible mileage

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Oct 9, 2009 | 07:34 PM

84wagoneer

Thread Starter

Member

Joined: Sep 2009

Posts: 234

Likes: 1

From: Medicine Hat, Alberta

Model: Cherokee

horrible mileage

i have a 2.8 v6. i know it isnt the best engine but, cmon. i got 9.7 mpg last tank. i drive like a grandma also. it seems to run good, starts good even in the cold canadian weather. if my timing was retarded could it cause my mileage to drop this bad? its relatively gutless. i just changed the air and fuel filter. any help is greatly appreciated!

Oct 9, 2009 | 07:48 PM

UserID6095

Newbie

Joined: May 2009

Posts: 3

Likes: 2

Model: Cherokee

When is the last time it had a tune up? New fluids? Gas tank leaks (lol, dont ask)?

Oct 9, 2009 | 07:50 PM

85_cherokee_man

Newbie

Joined: Sep 2009

Posts: 14

Likes: 0

Year: 1985

Model: Cherokee

Engine: 2.8

i got the same motor in my 85..and i get almost the xact same gas mileage..so its nothing unusual

Oct 9, 2009 | 07:53 PM

mike albo

CF Veteran

Joined: Mar 2009

Posts: 8,712

Likes: 2

From: Loomis,California

Year: 1987

Model: Cherokee

Engine: 242 inline six

Thats the pree Vortec GM V6 they are guttless I had one in my S10 Blazer.

Oct 9, 2009 | 09:49 PM

sv41878

Senior Member

Joined: Jun 2009

Posts: 670

Likes: 0

From: Central Pennsylvania

Year: 1989

Model: Cherokee (XJ)

Engine: 4.7 H.O.

swap it for a 4.0, I got 22 hwy last tank and need a tune up badly.

Oct 10, 2009 | 11:17 AM

UserID6095

Newbie

Joined: May 2009

Posts: 3

Likes: 2

Model: Cherokee

Quote:

Originally Posted by sv41878

swap it for a 4.0, I got 22 hwy last tank and need a tune up badly.

How many miles on the Jeep?

Oct 10, 2009 | 02:04 PM

84wagoneer

Thread Starter

Member

Joined: Sep 2009

Posts: 234

Likes: 1

From: Medicine Hat, Alberta

Model: Cherokee

fluids are all good, dont know about plugs wires or the cap and rotor. do you usually change the rotor when you do an ignition tune up? or just the cap?