Starts, but dies when key is released
Thread Starter
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Senior Member
Joined: Aug 2013
Posts: 276
Likes: 18
From: Colville Washington
Starts, but dies when key is released
Hi, I'm new to Jags, just bought a 1989 XJS, has been starting okay but now it will start okay but when I release the key to run, the engine dies. Maybe a relay stuck?? The engine will run as long as the key is on start (#3) but on #2 it dies, I know this is hard on the starter so I turn it off right away.
Any help for this newbie will be appreciated.
Thanks,
Dick C.
Any help for this newbie will be appreciated.
Thanks,
Dick C.
Veteran Member
Joined: Mar 2008
Posts: 25,520
Likes: 11,712
From: Pacific Northwest USA
I susect a problem with th ignition swich itself.
The switch is easily removed from the rear of the key lock and can be carefully opened up for inspection and, often, DIY repair. (Watch for little parts flying abou when you open it up)
To verify that the switch it at fault use a small jumper wire to jump the solid brown wire at the back of the switch to the solid white wire at the back of the switch. This supplies 12v to the ignition and fuel injection circuits
Cheers
DD
The switch is easily removed from the rear of the key lock and can be carefully opened up for inspection and, often, DIY repair. (Watch for little parts flying abou when you open it up)
To verify that the switch it at fault use a small jumper wire to jump the solid brown wire at the back of the switch to the solid white wire at the back of the switch. This supplies 12v to the ignition and fuel injection circuits
Cheers
DD
Thread Starter
|
Senior Member
Joined: Aug 2013
Posts: 276
Likes: 18
From: Colville Washington
I susect a problem with th ignition swich itself.
The switch is easily removed from the rear of the key lock and can be carefully opened up for inspection and, often, DIY repair. (Watch for little parts flying abou when you open it up)
To verify that the switch it at fault use a small jumper wire to jump the solid brown wire at the back of the switch to the solid white wire at the back of the switch. This supplies 12v to the ignition and fuel injection circuits
Cheers
DD
The switch is easily removed from the rear of the key lock and can be carefully opened up for inspection and, often, DIY repair. (Watch for little parts flying abou when you open it up)
To verify that the switch it at fault use a small jumper wire to jump the solid brown wire at the back of the switch to the solid white wire at the back of the switch. This supplies 12v to the ignition and fuel injection circuits
Cheers
DD
I'll check my manual to see how to take it out.
I live in Colville, east side of state.
Dick C.
Veteran Member
Joined: Mar 2008
Posts: 25,520
Likes: 11,712
From: Pacific Northwest USA
It's been a few years but, in essence......
Remove the under-dash trim panel to access the ignition lock and switch.
The switch is held onto the back of the lock with a tiny screw.
Remove screw, wriggle switch off lock
Unplug switch harness from main dashboard harness
Cheers
DD
Remove the under-dash trim panel to access the ignition lock and switch.
The switch is held onto the back of the lock with a tiny screw.
Remove screw, wriggle switch off lock
Unplug switch harness from main dashboard harness
Cheers
DD
Senior Member
Joined: Sep 2012
Posts: 782
Likes: 182
From: central Indiana
Could it be the coolant temp sensor? This might be worth a try...
1. Make sure the coolant temp sensor is plugged in firmly.
2. If it is, could be the sensor has died. Unplug the sensor and stick a piece of wire into the connections on the cable, essentially shorting it out. If that was the issue, it should start, and continue to run, after you've released the key from the ignition position.
Good luck with it!
John
1987 XJ-S V12, 62,000 miles
1. Make sure the coolant temp sensor is plugged in firmly.
2. If it is, could be the sensor has died. Unplug the sensor and stick a piece of wire into the connections on the cable, essentially shorting it out. If that was the issue, it should start, and continue to run, after you've released the key from the ignition position.
Good luck with it!
John
1987 XJ-S V12, 62,000 miles
Thread Starter
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Senior Member
Joined: Aug 2013
Posts: 276
Likes: 18
From: Colville Washington
Could it be the coolant temp sensor? This might be worth a try...
1. Make sure the coolant temp sensor is plugged in firmly.
2. If it is, could be the sensor has died. Unplug the sensor and stick a piece of wire into the connections on the cable, essentially shorting it out. If that was the issue, it should start, and continue to run, after you've released the key from the ignition position.
Good luck with it!
John
1987 XJ-S V12, 62,000 miles
1. Make sure the coolant temp sensor is plugged in firmly.
2. If it is, could be the sensor has died. Unplug the sensor and stick a piece of wire into the connections on the cable, essentially shorting it out. If that was the issue, it should start, and continue to run, after you've released the key from the ignition position.
Good luck with it!
John
1987 XJ-S V12, 62,000 miles
I will certainly try that first John, I have a lot to learn about the car, only had it a week. Was running and starting good, next minute not. I have another ignition switch that came with a box of parts so will try it next.
Thanks,
DickC
Thread Starter
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Senior Member
Joined: Aug 2013
Posts: 276
Likes: 18
From: Colville Washington
Doug you were right, I took the panel off and reached behind the switch and pulled and wiggled the wires and it started right up! Must have been a loose connection.
Thanks to all for your replies,
Dick C.
Thanks to all for your replies,
Dick C.
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