xj won't turn off!

A

alex673

NAXJA Forum User

Location

Western Australia

• Apr 26, 2013

• #1

Hi guys
I've searched for this problem on the forum and can't find it, so here goes...
I have had a problem over the last couple of days with my 95 XJ 4.0 Auto.
After starting up, sometimes it doesn't want to turn off. I can remove the key and the engine keeps running. I have to block air flow to the engine to stop it.
I thought it may have something to do with either the starter motor or alternator, as also my battery went flat last night, but now I'm not so sure.
Any ideas appreciated.
Cheers
Alex

 

magimerlin

NAXJA Forum User

Location

Flatonia, Tx

• Apr 26, 2013

• #2

I would look at the ignition switch up under the dash first.

 

souske

NAXJA Forum User

Location

The land of competition

• Apr 26, 2013

• #3

Shutdown relay circuit?

 

joe_peters

NAXJA Forum User

Location

Grants Pass, OryGun

• Apr 26, 2013

• #4

magimerlin said:

I would look at the ignition switch up under the dash first.

Click to expand...

Agree.

Look at the ignition switch--not the lock cylinder--and that is your most likely culprit "off the cuff". Secondary could be a stuck relay, but check the switch first.

 

Ecomike

NAXJA# 2091

NAXJA Member

Location

MilkyWay Galaxy

• Apr 26, 2013

• #5

Joe is right!!!! As usual, LOL! Ignition switch is toast. Has nothing to do with the starter or alternator. Next time just pull the primary spark wire to kill it.

 

D

DualSportDad

NAXJA Forum User

Location

US

• Apr 26, 2013

• #6

Mine did this to me once. Pretty sure t was a stuck relay. Not sure which one cause I just banged on the under hood fuse block and it shut off and it hasn't done it again. I'm sure it will again one day.

 

Shorty

NAXJA Forum User

NAXJA Memorial Lifetime Member

Location

on the beach in Ocean View, VA

• Apr 26, 2013

• #7

Ecomike said:

Joe is right!!!! As usual, LOL! Ignition switch is toast. Has nothing to do with the starter or alternator. Next time just pull the primary spark wire to kill it.

Click to expand...

if you're gonna kill it this way, make sure to disconnect the negative battery cable after it's shut down. Whatever is keeping it running (most likely, the ignition switch) will continue to let electricity flow through all the circuits and kill the battery over night..... as you saw last time.

 

scoobyxj

NAXJA Forum User

NAXJA Member

Location

Coshocton, OH

• Apr 26, 2013

• #8

Shorty said:

if you're gonna kill it this way, make sure to disconnect the negative battery cable after it's shut down. Whatever is keeping it running (most likely, the ignition switch) will continue to let electricity flow through all the circuits and kill the battery over night..... as you saw last time.

Click to expand...

Yepp yepp.

You can also pull the ADS relay under the hood to kill it.

 

Ecomike

NAXJA# 2091

NAXJA Member

Location

MilkyWay Galaxy

• Apr 27, 2013

• #9

On Renix I would pull the fuel pump relay.

 

A

alex673

NAXJA Forum User

Location

Western Australia

• Apr 29, 2013

• #10

Guys, you are a mine of wisdom. It was the ignition switch! Replaced it today, and it's working fine. Thanks!

 

kastein

NAXJA Member

NAXJA Member

Location

Rainy side of Washington

• Apr 29, 2013

• #11

If/when you have to emergency shutdown without a working ignition switch again, all you have to do is pull the ASD and/or fuel pump relays out of the PDC. Either one should kill it, the fuel pump one may take a little longer for it to shut off due to residual fuel in the rail.