5th Cyl. shut down

G

Gnat5680

NAXJA Forum User

Location

Bloomington,MN

• Aug 9, 2006

• #1

im helping a friend out. she owns a 01 Xj. im not sure the engine specs. but when it hit 75 or so it will shut off gas to the 5th cyl. the mechanic who said that could not fix it and right now the engine light is on.

any ideas???

please ask questions. i do not know what to say in here on this sublect.

 

K

ksdan

NAXJA Forum User

Location

salina ks

• Aug 9, 2006

• #2

take it to another mechanic?

 

G

Gnat5680

NAXJA Forum User

Location

Bloomington,MN

• Aug 9, 2006

• #3

i also forgot to say that it vibrates like its gonna shake it apart.

 

DaffyXJ

NAXJA Member #929

Location

southern MD

• Aug 9, 2006

• #4

Okay, I'll bite and ask a few.
How do you know it's fuel and not the spark that is inhibited?
Have you read the code?
At what RPM's is the engine at 75 MPH?
Was it just once or is it repeatable?
Have you looked at, gone through, changed anything? Such as coil packs or spark plug wires?
At what RPM/speed does it come back on or run better? Or do you have to go through an off-on cycle for it to run smooth?

Okay that should start the ball rolling.

 

C

Chero-King

NAXJA Forum User

Location

Up here eh?

• Aug 9, 2006

• #5

X2 on the spark plug wires and plugs. I had my Stratus do that but it lost the cylinder right from take off, turned out one of the wire broke and the clip that holds it the spark plug was stuck on the plug.

 

A

anony91xj

NAXJA Forum User

Location

North Jersey

• Aug 9, 2006

• #6

Chero-King said:

X2 on the spark plug wires and plugs. I had my Stratus do that but it lost the cylinder right from take off, turned out one of the wire broke and the clip that holds it the spark plug was stuck on the plug.

Click to expand...

The '99 has a coil rail, no wires.

For starters, what is the code that's throwing the CEL?

 

SanDiegoXJ

NAXJA Forum User

Location

San Diego, CA

• Aug 9, 2006

• #7

Hmmmm....thats a fun one =)

I'm assuming you got that its the #5 cylinder by reading some code, yeah?

Were there any other codes?

I'd say get those and go from there.

But if I was sure that it was only the #5 cylinder not getting gas, my first suspect would be the injector.

 

C

Chero-King

NAXJA Forum User

Location

Up here eh?

• Aug 9, 2006

• #8

anony91xj said:

The '99 has a coil rail, no wires.

For starters, what is the code that's throwing the CEL?

Click to expand...

Oh ok, Im not too familiar with the new ones.

 

langer1

NAXJA Forum User

Location

Mineral City,Ohio

• Aug 10, 2006

• #9

Chero-King said:

Oh ok, Im not too familiar with the new ones.

Click to expand...

CEL? Check Engine Light.

 

W

WI88XJ

NAXJA Forum User

Location

South Central Wisconsin

• Aug 10, 2006

• #10

anony91xj said:

The '99 has a coil rail, no wires.

Click to expand...

The 'coil rail' didn't come out until '00.

 

C

Chero-King

NAXJA Forum User

Location

Up here eh?

• Aug 10, 2006

• #11

langer1 said:

CEL? Check Engine Light.

Click to expand...

I actually was referring to not knowing about the coil rail.

 

Last edited: Aug 10, 2006

A

anony91xj

NAXJA Forum User

Location

North Jersey

• Aug 10, 2006

• #12

WI88XJ said:

The 'coil rail' didn't come out until '00.

Click to expand...

My fault..he said the XJ was an '01. I said '99, meant 01. Either way, the XJ in question doesn't have a distributor or wires.

We still don't know what codes are causing that CEL...?

 

G

Gnat5680

NAXJA Forum User

Location

Bloomington,MN

• Aug 14, 2006

• #13

sorry it took forever. she got the reading from a mech. up north. i don't know the codes but the guy said the code said it was the 5th cyl.

i will try to get more info from her.

 

C

carnuck

NAXJA Forum User

Location

seattle

• Aug 14, 2006

• #14

It may be one of the ones with a bad head. Cracked cyl head and valve guides in at least 20 late model 4.0L Jeeps I have connected with in the past few years.