starting, sputtering, and black smoke
01-26-2011, 10:44 PM
#1
Senior Member
Thread Starter
Join Date: Jun 2010
Location: slidell, LA
Posts: 517
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L inline 6 cylinder
starting, sputtering, and black smoke
i have a 98 xj and ive got some problems
its hard to start when the engine is cold
it sputters when sitting still
it blows black smoke out the tailpipe when accelerating hard
and i my check engine light is on and the code is po171 which is fuel system to lean bank 1
ive got the 703 injectors and im pretty sure they are good
ive got the e3 spark plugs which are 2 months old
ive got spark plug wires 6 months old
i put a used fuel pump and fuel pressure regulator in last month and they worked fine for about 3 weeks and the all this happened
soooo any help is appreciated
its hard to start when the engine is cold
it sputters when sitting still
it blows black smoke out the tailpipe when accelerating hard
and i my check engine light is on and the code is po171 which is fuel system to lean bank 1
ive got the 703 injectors and im pretty sure they are good
ive got the e3 spark plugs which are 2 months old
ive got spark plug wires 6 months old
i put a used fuel pump and fuel pressure regulator in last month and they worked fine for about 3 weeks and the all this happened
soooo any help is appreciated
01-26-2011, 11:14 PM
#3
Senior Member
Join Date: Dec 2010
Location: Elgin,Il.60124
Posts: 798
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1994
Model: Cherokee
Engine: 1997 4.0 I6
Definite 02 sensor, any sudden climate changes where your at, that is notorious with causing faulty 02 sensors, have it scanned for any "PENDING" codes, just so there's no underlying surprises later!! Not to laugh, but its funny the dtc scanner labels it "BANK 1", didnt know a straight 6 had a bank!! lol
Last edited by garb.man; 01-26-2011 at 11:17 PM.
01-27-2011, 08:53 PM
#4
Senior Member
Thread Starter
Join Date: Jun 2010
Location: slidell, LA
Posts: 517
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0L inline 6 cylinder
lol that bank one thing is funny i didnt think about it
but anyway
ive changed both o2 sensors in either november or december and then my check engine light came on an the code was like a p0131 i think
but whatever it was it said the upstream o2 sensor was reading low voltage so i changed it with one i had that i thought was still good but now im guessing it isnt.
but anyway
ive changed both o2 sensors in either november or december and then my check engine light came on an the code was like a p0131 i think
but whatever it was it said the upstream o2 sensor was reading low voltage so i changed it with one i had that i thought was still good but now im guessing it isnt.
Thread
Thread Starter
Forum
Replies
Last Post
zumer715
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
18
07-08-2022 05:17 PM
clark40
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
08-28-2015 07:11 AM
Gtrsrlly
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
08-25-2015 11:50 AM
batman43
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
08-20-2015 08:43 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
