engine does not stop
Thread Starter
Instructor
Joined: Jul 2009
Posts: 223
Likes: 0
From: Timisoara, Romania
engine does not stop
hello,
sometime when I turn the key to off, the engine does not stop, anything else stops, and the engine is running until the there is no more presure in the fuel rail, although the fuel pump stops, the AC stops... and after a few seconds SYS is blinking
sometime when I turn the key to off, the engine does not stop, anything else stops, and the engine is running until the there is no more presure in the fuel rail, although the fuel pump stops, the AC stops... and after a few seconds SYS is blinking
Suckin' gas, haulin' ass.
Joined: Apr 2010
Posts: 1,100
Likes: 8
From: Newport News Virginia
Something is backfeeding power to your ignition system. Have your alternator checked.
Le Mans Master
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
I would assume the engine is not dieseling. This is because the older cars that had carburetors, the carburetors don’t shut off which will supply the engine with fuel which is required for dieseling. Fuel injectors do shut off cutting off fuel supply hence lessening the ability to diesel
So my first inclination is the check the ignition switch as already indicated. It might be a bad switch or the linkage that controls the switch might cause the problem also.
So my first inclination is the check the ignition switch as already indicated. It might be a bad switch or the linkage that controls the switch might cause the problem also.
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Drifting
Joined: Jun 2010
Posts: 1,853
Likes: 8
From: Westerly RI
Go a little deeper, it's behind the ignition keyhole in the steering column.
What year is your car?
If "sys" is flashing, look for codes in the CCM (not ECM). These are read thru the trip computer buttons, use forum "search" to get instructions.
What year is your car?
If "sys" is flashing, look for codes in the CCM (not ECM). These are read thru the trip computer buttons, use forum "search" to get instructions.
Last edited by sailorsteve; Jan 14, 2011 at 10:21 AM.
Le Mans Master
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
The ignition switch is not on the top of the steering column by the lock cylinder or steering wheel. It is down below by the base of the steering column. It is a slide switch which is actuated by a rod.
I can't exactly tell you how to take it out since I have dot done it. But I can tell you there is also an adjustment or alignment for it. If it should become loose it may not be turning off when the rod moves to the off position.
On the base of the column there is the ignition switch and the high beam switch. I believe the lower switch is the ignition switch, the one you are looking for.
FSM for my 94, page 3F5B-17 Your car is a 91, hope it helps.
I guess it's possible the ignition switch has gone bad itself, but you will just have to get down there and investigate and see what you find.
Good luck.
I can't exactly tell you how to take it out since I have dot done it. But I can tell you there is also an adjustment or alignment for it. If it should become loose it may not be turning off when the rod moves to the off position.
On the base of the column there is the ignition switch and the high beam switch. I believe the lower switch is the ignition switch, the one you are looking for.
FSM for my 94, page 3F5B-17 Your car is a 91, hope it helps.
I guess it's possible the ignition switch has gone bad itself, but you will just have to get down there and investigate and see what you find.
Good luck.
Last edited by pcolt94; Jan 14, 2011 at 12:14 PM.
Racer
Joined: Nov 2010
Posts: 460
Likes: 1
From: Oliphant Ontario
As pcolt94 said, it's under the dash. It will likely be very close to the big bolts that mount the column under the dash, probably attached to the column and has a 1/8" steel rod from it to the wheel. Turning the key back and forth will let you see the rod move.
It's a GM thing and they do wear and get sloppy, more often than not when you can't get power when you turn the key backward to ACC it is this same thing that does it, sloppy and incomplete travel.
Greg
It's a GM thing and they do wear and get sloppy, more often than not when you can't get power when you turn the key backward to ACC it is this same thing that does it, sloppy and incomplete travel.
Greg
Advanced
Joined: Nov 2010
Posts: 80
Likes: 0
From: Kantuk Valley
what about your distributor/ coil
ive seen that happen acouple times
i dont know what kind of coil and stuff you got
but i seen a bad coil make a car not shut off (when you turn the key)
it will still try and run and /putt putt
ive seen that happen acouple times
i dont know what kind of coil and stuff you got
but i seen a bad coil make a car not shut off (when you turn the key)
it will still try and run and /putt putt
Last edited by pay the mechanic; Jan 14, 2011 at 08:36 PM.
Thread Starter
Instructor
Joined: Jul 2009
Posts: 223
Likes: 0
From: Timisoara, Romania
in this case I think I will have to get the car to a service shop, for me its hard to get where you said the ignition switch is and I dont wanna mess up things
@pay the mechanic: I did changed the cap and rotor, but not the coil, still I dont see link between the coil and the engine shut off ...
thanks
@pay the mechanic: I did changed the cap and rotor, but not the coil, still I dont see link between the coil and the engine shut off ...
thanks
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
before you spend some cash, unplug the little plug on the alternator, then start the car and then shut it off. if it quits immediately, you found it.
Be careful though, the plug is almost 25 years old, and can easily break the tang that clips it in there.
Be careful though, the plug is almost 25 years old, and can easily break the tang that clips it in there.
Advanced
Joined: Nov 2010
Posts: 80
Likes: 0
From: Kantuk Valley
in this case I think I will have to get the car to a service shop, for me its hard to get where you said the ignition switch is and I dont wanna mess up things
@pay the mechanic: I did changed the cap and rotor, but not the coil, still I dont see link between the coil and the engine shut off ...
thanks
@pay the mechanic: I did changed the cap and rotor, but not the coil, still I dont see link between the coil and the engine shut off ...
thanks
the engine would not cut off when you turn the key off
it would eventully.....but not right away
bought a new coil ----and -----it stopped
if i was you I would try that.....................
**************************************** ******
I just had this problem .........last summer
I didnt see the link between the engine not shutting off and the coil...either
the coil is bad and its not shutting off...
Im glad i didnt post problem this last year.....i would of been sent in a long goose chase..
check your coil out....
thats the problem
my 90 yr old SBC guru, didnt know why my car was doing that either........
your coil is breakiing down
**************************************** *****************
bad coil
im almost pretty sure of it............my car did it.........and.......the coil fixxed it.............
run and buy you a new coil....or have your coil tested ASAP
Last edited by pay the mechanic; Jan 15, 2011 at 11:47 AM.
